Glow Worms at Sherwood Forest 2014
Clipstone Old Quarter female Glow Worm data 2014
A comparison of Glow Worm colonies at Clipstone Old Quarter and Great Orme in 2014
 
Final update - July 30th 2014

This season has been another interesting one, as in late June it looked like we would not reach 400 females for the year. The final total ended up being 742, which is the highest since 2011 and has put a halt on the decline in numbers here over recent years.

....
     
 
2014 Glow Worm sightings (Clipstone Old Quarter)
Glow Worms (both adults and larvae) are recorded as follows.....L = larva ..... M = male .....F = female
........................            
Date   Stage   Additional notes
................   .L. .M. ..F.    
March 3rd   0 0 0   No larvae recorded following a pleasant sunny day. Temperature dropped quickly to 6C at T2 at 17:30h. Site visited from 17:15h-18:10h.
...
March 7th   0 0 0   No larvae recorded. Weather sunny and breezy, with a temperature of 8C at T2. Site visited from 18:00h-17:00h.
...
March 8th   3 0 0   Three larvae recorded this evening, measuring 14mm, 15mm and 16mm. Site visited from 17:40h-18:20h, weather clear and mild, with a T2 temperature of 10C.
...
March 9th   2 0 0   Two larvae recorded this evening, measuring 16mm and 19mm. Site visited from 17:00h-18:00h, weather clear and mild, with a T2 temperature of 15C.
...
March 14th   0 0 0   No larvae recorded. Weather sunny and warm, with a temperature of 15C recorded at T2. Site visited from 16:10h-17:20h
...
March 16th   0 0 0   No larvae recorded during a short evening survey. Site visited from 19:50h-20:15h, with a temperature of 11C recorded at T2. Sections K and J were surveyed.
...
March 17th   1 0 0   A single 17mm larvae recorded from section A this evening. Site visited from 17:25h-18:15h, with a temperature of 11C recorded at T2. Sections A, B, C and D were surveyed.
...
March 29th   5 0 0   Five larvae recorded this evening, measuring two at 15mm and at 22mm, with one at 20mm. Site visited from 17:30h-18:30h, with a temperature of 14C. Weather clear and sunny. Sections A, B, C and D were surveyed.
...
March 30th   2 0 0   Two larvae recorded this evening, measuring 18mm and 16mm. Site visited from 17:50h-18:50h, with a temperature of 16C. Weather clear and sunny. Sections A, B, C and D were surveyed. Two dead larvae were also found.
...
March 31st   3 0 0   Three larvae recorded this evening, measuring 15mm and 20mm. Site visited from 18:20h-19:20h, with a temperature of 14C. Weather cloudy and warm. One dead larva was also found.
...
April 1st   1 0 0   One larvae recorded this evening, measuring 20mm. Site visited from 19:10h-19:55h, with a temperature of 14C. Weather clear and sunny. One dead larva was also found.
...
April 2nd   6 0 0   Six larvae recorded this evening. Site visited from 17:40h-18:45h, with a temperature of 10C at T2. Weather cloudy and mild. Sections A, B, C and D were surveyed.
...
April 3rd   5 0 0   Five larvae recorded this evening. Site visited from 17:35h-18:30h, with a temperature of 10C at T2. Weather cloudy with a little light rain. Sections A, B, C and D were surveyed.
...
April 4th   4 0 0   Four larvae recorded this evening. Site visited from 18:25h-19:15h, with a temperature of 13C at T2. Weather cloudy and mild. Sections A, B, C and D were surveyed.
...
April 5th   5 0 0   Five larvae recorded this evening. Site visited from 19:05h-19:40h, with a temperature of 14C at T2. Weather cloudy and mild. Sections A, B, C and D were surveyed.
...
April 6th   1 0 0   One larvae recorded this evening, measuring 18mm. Site visited from 18:30h-19:15h, with a temperature of 13C at T2. Weather cloudy with rain in the afternoon.
...
April 7th   1 0 0   One larvae recorded this evening, measuring 17mm. Site visited from 19:00h-19:45h, with a temperature of 9C at T2. Weather cloudy with rain most of the day.
...
April 8th   10 0 0   Ten larvae recorded this evening, Site visited from 18:45h-19:45h, with a temperature of 10C at T2. Weather clear and mild.
...
April 9th   15 0 0   15 larvae recorded this evening, Site visited from 18:45h-19:55h, with a temperature of 14C at T2. Weather cloudy and mild. One dead larva was also found in Section C.
...
April 10th   14 0 0   14 larvae recorded this evening, Site visited from 18:50h-20:00h, with a temperature of 12C at T2. Weather clear and sunny. Three dead larva was also found.
...
April 11th   4 0 0   Four larvae recorded this evening. Site visited from 19:10h-20:05h, with a temperature of 12C. Weather clear and mild.
...
April 12th   0 0 0   No larvae recorded this evening. Site visited from 19:10h-20:05h, with a temperature of 11C. Weather cloudy with rain. Sections A, B, C and D were surveyed.
...
April 13th   7 0 0   Seven larvae recorded this evening. Site visited from 19:40h-20:15h, with a temperature of 11C. Weather cloudy and mild. Sections A, B, C and D were surveyed.
...
April 14th   7 0 0   Seven larvae recorded this evening. Site visited from 18:35h-19:35h, with a temperature of 10C. Weather sunny and mild. Sections A, B, C and D were surveyed. One dead larva was also found.
...
April 15th   2 0 0   Two larvae recorded this evening, measuring 18mm and 22mm. Site visited from 19:05h-20:05h, with a temperature of 11C. Weather clear and sunny . Sections A, B, C and D were surveyed.
...
April 16th   1 0 0   One larvae recorded this evening, measuring 20mm. Site visited from 19:35h-20:30h, with a temperature of 13C. Weather clear and sunny . Sections A, B, C and D were surveyed.
...
April 17th   5 0 0   Five larvae recorded this evening, Site visited from 19:30h-20:25h, with a temperature of 10C. Weather cloudy becoming clear. Sections A, B, C and D were surveyed.
...
April 18th   3 0 0   Three larvae recorded this evening, Site visited from 19:20h-20:20h, with a temperature of 11C. Weather clear and sunny. Sections A, B, C and D were surveyed.
...
April 19th   1 0 0   One larvae recorded this evening, measuring 21mm. Site visited from 19:55h-20:40h, with a temperature of 9C. Weather clear and sunny. Sections A, B, C and D were surveyed.
...
April 20th   8 0 0   Eight larvae recorded this evening, Site visited from 19:35h-20:25h, with a temperature of 12C. Weather clear and sunny. Sections A, B, C and D were surveyed.
...
April 21st   2 0 0   Two larvae recorded this evening, measuring 24mm and 20mm. Site visited from 19:20h-20:05h, with a temperature of 11C. Weather cloudy and mild. Sections A, B, C and D were surveyed.
...
April 22nd   5 0 0   Five larvae recorded this evening, Site visited from 19:35h-20:30h, with a temperature of 13C. Weather cloudy and mild. Sections A, B, C and D were surveyed.
...
April 23rd   5 0 0   Five larvae recorded this evening, Site visited from 18:25h-19:15h, with a temperature of 15C. Weather cloudy with light rain. Sections A, B, C and D were surveyed.
...
April 24th   4 0 0   Four larvae recorded this evening, Site visited from 19:40h-20:30h, with a temperature of 14C. Weather cloudy and mild. Sections A, B, C and D were surveyed.
...
April 25th   12 0 0   12 larvae recorded during a late night survey. Site visited from 22:30h-02:00h, with a temperature of 8C. Weather cloudy and mild. Sections D, J, and K. were surveyed.
...
April 26th   2 0 0   Two larvae recorded this evening, measuring 25mm and 15mm. Site visited from 19:30h-20:30h, with a temperature of 12C. Weather Partly cloudy and mild.
...
April 26th   1 0 0   A late night larval survey, produced a sinle glowing 24mm larva found at 00:00h. Site visited from 23:00h-01:40h, with a temperature of 9C at T2. Weather dry with clearing skies and mild. Sections D, K and J were surveyed.
...
April 27th   5 0 0   Five larvae recorded this evening, Site visited from 18:40h-19:55h, with a temperature of 13C. Weather Partly cloudy and mild. Two dead larva were also found. Sections A, B, C and D were surveyed.
...
April 28th   6 0 0   Six larvae recorded this evening, Site visited from 18:50h-19:55h, with a temperature of 15C. Weather clear and sunny. Sections A, B, C and D were surveyed.
...
April 29th   7 0 0   Seven larvae recorded this evening, Site visited from 18:45h-19:40h, with a temperature of 15C. Weather cloudy and mild. Sections A, B, C and D were surveyed.
...
April 29th   5 0 0   A late night larval survey, produced five larvae found between 00:11h and 00:50h, including one pupating male larva. Site visited from 23:30h-00:50h, with a temperature of 9C at T2. Weather dry with clearing skies and mild. Sections D, J, K, L and M were surveyed.
...
May 2nd   2 0 0   Two larvae recorded this evening in sections A, B, C and D, but another larva was found in a short survey of section J, which is not included in the larval total. Site visited from 17:40h-19:25h, with a temperature of 11C. Weather sunny and mild. Sections A, B, C, D and J were surveyed.
...
May 3rd   5 0 0   Five larvae recorded this evening, Site visited from 18:50h-19:40h, with a temperature of 14C. Weather sunny and mild. Sections A, B, C and D were surveyed.
...
May 3rd   3 0 0   A late night larval survey produced three larvae between 23:15h and 01:55h, with two larvae at the bottom of section N and one nearby in section L. A faint glow was found to be from a freshly formed (within a few hours) male pupa, lying under a leaf on the edge of the path in section J. Weather cloudy and mild with a temperature of 11C at T2. Sections D, I, K, J, L, M, N and O were surveyed.
...
May 5th   2 0 0   Two larvae recorded this evening in sections A, B, C and D, but another larva was found in a short survey of section J. Site visited from 19:10h-20:15h, with a temperature of 14C. Weather cloudy and mild. The male pupa found on May 3rd, was checked and was found to be still intact.
...
May 6th   7 0 0   Seven larvae recorded in sections A, B, C and D this evening. A further three larva found in a short survey of section J. Site visited from 19:30h-20:30h, with a temperature of 15C. Weather cloudy and mild. A late night survey produced no adults or larvae between 00:35h and 01:35h. Weather cloudy and mild with rain.
...
May 7th   4 0 0   Four larvae recorded this evening, Site visited from 19:05h-20:00h, with a temperature of 14C. Weather cloudy and mild. A late night larval survey produced no adults or larvae between 22:15h and 23:30h, with a temperature of 12C. Weather partly cloudy and mild.
...
May 8th   0 0 0   No adults or larvae found this evening. Site visited from 21:55h-22:35h. Weather clear and mild and a temperature of 12C at T2.
...
May 9th   0 0 0   No adults or larvae found this evening. Site visited from 22:00h-23:30h. Weather partly overcast and mild, with some rain during the day. A temperature of 12C recorded at T2. The male pupa found in section J on May 3rd remained intact.
...
May 10th   0 0 0   No adults or larvae found this evening. Site visited from 21:55h-22:55h. Weather partly overcast and mild, after showers during the day. A temperature of 10C recorded at T2.
...
May 11th   0 0 0   No adults or larvae found this evening. Site visited from 21:50h-23:50h. Weather partly overcast and mild, with heavy showers during the day. A temperature of 10C recorded at T2.
...
May 12th   0 0 0   No adults or larvae found this evening. Site visited from 22:10h-23:30h. Weather partly overcast and mild, with showers during the day. A temperature of 10C recorded at T2.
...
May 13th   0 0 0   No adults or larvae found this evening. Site visited from 21:45h-23:00h. Weather, clear skies with a temperature of 9C at T2. The male pupa found in section J remained intact.
...
May 14th   0 0 0   No adults or larvae found this evening. Site visited from 21:55h-23:20h. Weather, clear skies with a temperature of 10C at T2. The male pupa found in section J remained intact and the pre-pupating larva found on April 29th, finally pupated during the day.
...
May 15th   0 0 0   No adults or larvae found this evening. Site visited from 21:55h-23:30h. Weather, clear skies with a temperature of 15C at T2.
...
May 16th   0 0 0   No adults or larvae found again this evening. Site visited from 21:50h-22:50h. Weather, clear skies with a temperature of 17C at T2. The male pupa found in section J, remains unhatched.
...
May 17th   0 0 0   No adults or larvae this evening, but a freshly formed female pupa was found glowing in section J at 23:55h. The male pupa on site, still remains unhatched. Site visited from 21:40h-23:10h. Weather, clear skies with a temperature of 16C at T2.
...
May 18th   2 0 1   One female found this in section A this evening, right at the end of the survey, which saw us find two hunting larva in sections J and O, and another freshly formed female pupa at the bottom os section J. The male pupa has still not emerged, even though it is now 15 days since pupation. Weather partly cloudy becoming clear and warm, with a temperature of 18C at T2. All sections were surveyed. Site visited from 21:45h-23:45h.
...
May 19th   0 0 4   Four females found this evening and a female pupa found in section E. Site visited from 22:00h-23:40h. Weather clear skies with a temperature of 17C at T2. All sections were surveyed.
...
May 20th   0 0 12   12 females found this evening with nine new females. Site visited from 22:05h-23:45h. Weather mostly cloudy and warm, with light showers during the day. Temperature of 14C at T2. All sections were surveyed.
...
May 21st   0 0 7   Seven females found this evening, four of which were new. None of the expected 10 females in the grass strip of sections A, B, C and D, were present. Site visited from 22:15h-00:05h. Weather clear becoming cloudy, with a temperature of 13C at T2. All sections were surveyed.
...
May 22nd   1 0 23   23 females found this evening, 14 of which were new. A 13 mm larva was found in section I. All four pupa known on site remain unhatched. Site visited from 22:15h-00:10h. Weather cloudy and mild, with a temperature of 10C at T2. All sections were surveyed.
...
May 23rd   0 0 13   13 females found this evening, only one was new. Site visited from 22:10h-23:50h. Weather Partly cloudy and mild, with a temperature of 11C at T2. All sections were surveyed.
...
May 24th   1 0 41   41 females found this evening, including 18 new females. This represents the highest May count since we started recording in 2009. At the current time, counts are about two weeks ahead of 2011, which was the last very early season. A single 18mm larvae was found glowing in section J and the male pupa hatched sometime today. Site visited from 22:05h-00:15h. Weather Partly cloudy becoming clear and a temperature of 11C at T2. All sections were surveyed.
...
May 25th   0 0 9   Nine females found this evening, with two new ones insections E and J. No females were present in the grass strip of sections A, B, C and D, probably due to the lower grass temperature. Site visited from 22:15h-00:00h. Weather clear skies with a temperature of 11C at T2. All sections were surveyed.
...
May 26th   3 0 54   54 females found this evening, including 16 new females, also a female pupa found in section K. Site visited from 22:20h-00:30h. Weather partly cloudy and mild after rain during the afternoon, with a temperature of 11C at T2. All sections were surveyed.
...
May 27th   0 0 75   A record May count of 75 females this evening, Site visited from 22:20h-00:30h. Weather cloudy and mild with rain and a temperature of 10C at T2. All sections were surveyed.
...
May 28th   0 0 99   99 females found this evening, including 28 new females. Site visited from 22:15h-00:50h. Weather cloudy and mild with light rain and a temperature of 11C at T2. All sections were surveyed.
...
May 29th   0 1 101   101 females found this evening, including 19 new females. Site visited from 22:05h-00:50h. Weather cloudy and mild with a temperature of 11C at T2. All sections were surveyed.
...
May 30th   3 13 99   99 females found this evening, including 43 new females. After the first male was recorded last night, it was soon obvious that a large emergence of males had taken place during the previous 24 hours, with many females being missing from the previous night and 13 males actually recorded with females. Three larva were also recorded during surveying. Site visited from 22:15h-00:40h. Weather cloudy and mild with a temperature of 12C at T2. All sections were surveyed.
...
May 31st   1 0 13   Just 13 females found this evening, which was down to clear skies and a much cooler temperature than recent dates, Site visited from 22:15h-00:50h. Weather clear and feeling cool, with a temperature of 11C at T2 and 9C at T1. A check on the grass temperature, provided a temperature of just 3C. All sections were surveyed.
...
June 1st   0 6 21   21 females found this evening, including 11 new females. Site visited from 22:05h-00:25h. Weather cloudy with a temperature of 15C at T2. All sections were surveyed.
...
June 2nd   0 0 4   Four females found this evening, including three new females. Site visited from 22:20h-00:00h. Weather cloudy with rain and a temperature of 15C at T2. All sections were surveyed.
...
June 3rd   0 1 8   Eight females found this evening, including six new females. Site visited from 22:15h-00:00h. Weather cloudy with rain during the day, and a temperature of 13C at T2. All sections were surveyed.
...
June 4th   1 6 9   Nine females found this evening. Site visited from 22:15h-00:15h. Weather cloudy with rain and a temperature of 12C at T2. All sections were surveyed.
...
June 5th   0 0 3   Only three females tonight. Site visited from 22:25h-23:55h. Weather clear skies with a temperature of 10C at T2. All sections were surveyed.
...
June 6th   0 1 24   24 females found this evening. Site visited from 22:15h-00:15h. Weather clear skies with a temperature of 13C at T2. All sections were surveyed.
...
June 7th   0 1 29   29 females found this evening, part of what looks to be a small secondary peak. Site visited from 22:30h-00:30h. Weather clear skies with a temperature of 13C at T2. All sections were surveyed.
...
June 8th   0 0 23   23 females found this evening, Site visited from 22:30h-00:30h. Weather clear skies with a temperature of 13C at T2. All sections were surveyed.
...
June 9th   1 3 5   Only five females tonight. Site visited from 22:25h-00:10h. Weather clear skies with with a temperature of 17C at T2. All sections were surveyed.
...
June 10th   0 2 16   16 females found this evening, including 14 new females. Site visited from 22:25h-00:25h. Weather clear skies with a temperature of 13C at T2. All sections were surveyed.
...
June 11th   0 2 22   22 females found this evening. Site visited from 22:35h-00:30h. Weather clear skies with a temperature of 14C at T2. All sections were surveyed.
...
June 12th   0 2 30   30 females found this evening, including 22 new females. Site visited from 22:30h-00:35h. Weather clear skies with a temperature of 15C at T2. All sections were surveyed.
...
June 13th   0 1 14   14 females found this evening, including 11 new females. Site visited from 22:10h-00:25h. Weather cloudy with a temperature of 15C at T2. All sections were surveyed.
...
June 14th   0 0 11   11 females found this evening, including 7 new females. Site visited from 22:30h-00:45h. Weather cloudy with a temperature of 14C at T2. All sections were surveyed.
...
June 15th   2 6 16   16 females found this evening, including 11 new females. Site visited from 22:25h-00:30h. Weather cloudy with a temperature of 14C at T2. All sections were surveyed.
...
June 16th   1 1 16   16 females found this evening, including 12 new females. Site visited from 22:30h-00:30h. Weather cloudy with a temperature of 14C at T2. All sections were surveyed.
...
June 17th   2 4 28   An unexpected increase in numbers, with 28 females found this evening, including 24 new females. Site visited from 22:20h-00:40h. Weather partly cloudy becoming clear with a temperature of 17C at T2. All sections were surveyed.
...
June 18th   3 5 26   26 females found this evening, including 17 new females. Site visited from 22:30h-00:55h. Weather clear skies with a temperature of 16C at T2. All sections were surveyed.
...
June 19th   1 4 29   29 females found this evening, including 27 new females. Site visited from 22:25h-00:30h. Weather cloudy with a temperature of 15C at T2. All sections were surveyed.
...
June 20th   4 2 43   A clear emergence of females this evening, with 43 females found, including 38 new females. A reduction in the number of males with females, was noted. Site visited from 22:40h-01:10h. Weather clear skies with a temperature of 15C at T2. All sections were surveyed.
...
June 21st   3 2 62   62 females found this evening, including 38 new females. The number of females present, which had been recorded on previous nights also increased, so males look to be on the decline. Larvae have also started to be recorded more regularly during recent surveys. Site visited from 22:30h-01:10h. Weather cloudy with a temperature of 15C at T2. All sections were surveyed.
...
June 22nd   1 6 60   60 females found this evening, including 38 new females. Site visited from 22:35h-01:15h. Weather clear skies with a temperature of 15C at T2. All sections were surveyed.
...
June 23rd   1 2 38   38 females found this evening, including 19 new females. Site visited from 22:30h-00:45h. Weather cloudy with a temperature of 16C at T2. All sections were surveyed.
...
June 24th   1 1 37   37 females found this evening, including 22 new females. Site visited from 22:25h-00:30h. Weather clear skies with a temperature of 13C at T2. All sections were surveyed.
...
June 25th   0 4 47   47 females found this evening, including 26 new females. Site visited from 22:25h-00:30h. Weather partly cloudy with a temperature of 14C at T2. All sections were surveyed.
...
June 26th   0 1 47   47 females found this evening, including another 26 new females. A female, lightly covered in mud, was found glowing in the middle of the forest tracks marking the junctions of sections F and J. On close inspection before moving her to a safer location, she was found to be egglaying, having already deposted over 20 eggs down the side of a loose stone. This may well have been Female 481, which was recorded with a male on 22/06/14. Site visited from 22:25h-00:45h. Weather cloudy with a temperature of 13C at T2. All sections were surveyed.
...
June 27th   1 2 37   37 females found this evening, including six new females. Site visited from 22:15h-00:15h. Weather cloudy with a temperature of 11C at T2. All sections were surveyed.
...
June 28th   3 0 41   41 females found this evening, including nine new females. Site visited from 22:25h-01:05h. Weather cloudy with a temperature of 12C at T2. All sections were surveyed.
...
June 29th   0 0 57   A rise in numbers again, with 57 females found, including 13 new females. Site visited from 22:10h-00:35h. Weather cloudy with a temperature of 13C at T2. All sections were surveyed.
...
June 30th   2 0 50   50 females found this evening, including eight new females. Site visited from 22:20h-00:45h. Weather clear skies with a temperature of 12C at T2. All sections were surveyed.
...
July 1st   0 0 56   Another good site count with 56 females this evening, including 17 new females. Site visited from 22:30h-00:45h. Weather clear skies with a temperature of 12C at T2. All sections were surveyed.
...
July 2nd   5 2 60   Glow Worms continue to emerge in good numbers, although the season will start to decline from now on. A total of 60 females were found this evening, including 21 new females. One female was even found glowing below ground in a worm hole. Site visited from 22:25h-00:50h. Weather clear skies with a temperature of 17C at T2. All sections were surveyed.
...
July 3rd   2 6 51   51 females found this evening, including 18 new females. Site visited from 22:30h-00:40h. Weather clear skies with a temperature of 16C at T2. All sections were surveyed.
...
July 4th   0 0 38   38 females found this evening, with only four new females. Site visited from 22:25h-00:05h. Weather cloudy with some ligth rain and a temperature of 16C at T2. All sections were surveyed.
...
July 5th   1 1 36   36 females found and just five new females. Site visited from 22:25h-00:15h. Weather cloudy becoming clear and a temperature of 15C at T2. All sections were surveyed.
...
July 6th   0 0 20   20 females found and just one new female. Site visited from 22:30h-00:00h. Weather clear skies with a temperature of 13C at T2. All sections were surveyed.
...
July 7th   0 1 22   22 females found, with no new females recorded. Site visited from 22:20h-23:30h. Weather, overcast and warm, with a heavy shower prior to this evening's survey. A temperature of 15C at T2. All sections were surveyed.
...
July 8th   0 1 21   21 females found, with no new females recorded. Site visited from 22:30h-23:35h. Weather clear skies with a temperature of 14C at T2. All sections were surveyed.
...
July 9th   0 0 19   19 females found, with no new females recorded. Site visited from 22:25h-23:35h. Weather partly cloudy becoming clear with a temperature of 15C at T2. All sections were surveyed.
...
July 10th   0 0 18   18 females found, with three new females recorded this evening. Site visited from 22:20h-23:25h. Weather partly cloudy becoming clear with a temperature of 16C at T2. All sections were surveyed.
...
July 11th   0 0 16   16 females found, with no new females recorded. Site visited from 22:20h-23:35h. Weather clear skies with a temperature of 16C at T2. All sections were surveyed.
...
July 12th   0 0 15   15 females found, with no new females recorded for the second evening running. Site visited from 22:20h-23:35h. Weathe heavy rain with a temperature of 17C at T2. All sections were surveyed.
...
July 13th   0 0 12   12 females found, with no new females recorded. Site visited from 22:25h-23:30h. Weather cloudy with rain during the evening with a temperature of 15C at T2. All sections were surveyed.
...
July 14th   0 0 10   10 females found, with one new female (F741) recorded at the top of section J. Site visited from 22:20h-23:25h. Weather partly cloudy becoming clear with a temperature of 17C at T2. All sections were surveyed.
...
July 15th   1 0 7   The number of females continues to decline, with just seven found this evening, although a very low grass temperature could be to blame for at least three not appearing. Site visited from 22:20h-23:20h. Weather clear skies with a temperature of 13C at T2.
...
July 16th   0 0 4   The number of females continues to decline, with just four found this evening. Site visited from 22:25h-23:25h. Weather clear skies with a temperature of 17C at T2.
...
July 17th   0 0 5   Five females found with one new female. Site visited from 22:10h-23:20h. Weather partly cloudy with a temperature of 18C at T2.
...
July 18th   0 0 4   Just four females present this evening. Site visited from 22:15h-23:20h. Weather clear skies, becoming cloudy. A very warm temperature of 22C at T2.
...
July 19th   1 0 2   Down to only females F739 (section B) and F742 (section J) this evening. Site visited from 22:05h-23:00h. Weather cloudy with rain during the evening with a temperature of 18C at T2.
...
July 20th   0 0 2   Still just the two females present this evening. Site visited from 22:10h-23:00h. Weather cloudy with a temperature of 19C at T2.
...
July 21st   0 0 2   F739 and F742 still glowing this evening. Site visited from 22:05h-23:55h. Weather clear skies with a temperature of 17C at T2.
...
July 22nd   0 0 2   Still two females present this evening. Site visited from 22:00h-22:50h. Weather cloudy with a temperature of 17C at T2.
...
July 23rd   0 0 2   Still two females present this evening. Site visited from 22:05h-22:50h. Weather clear skies with a temperature of 18C at T2.
...
July 24th   0 0 2   F739 and F742 still glowing this evening. Site visited from 22:05h-22:45h. Weather clear skies with a temperature of 19C at T2.
...
July 25th   0 0 1   Just F742 is glowing this evening. Site visited from 22:05h-22:45h. Weather clear skies with a temperature of 18C at T2.
...
July 26th   0 0 0   No females tonight. Site visited from 22:00h-22:45h. Weather cloudy and very warm, with a temperature of 22C at T2.
...
July 27th   0 0 0   No females and no larvae this evening. Site visited from 22:00h-22:45h. Weather cloudy, with a temperature of 17C at T2.
 
Below:- Arial map showing the positions of female Glow Worms at Clipstone Old Quarter during 2014.
.................
 
Glow Worm larval size averages 2009 - 2014
..
The left hand column shows the break down of weekly periods each Spring, with the corresponding size averages for that week each year.

Reading the size data in each year's column, shows how larval growth is completed before pupation. All the larvae found during daylight in the survey sections, are now believed to be post hibernation/pre-pupation larvae, probably feeding once during.

It is interesting to note how the total average larval size for each Spring period, has decreased since 2009, based on the data we have.

 
.. .. 2009 2010 2011 2012 2013 2014
Mar 22-31 .. .. .. 18.03mm 21.16mm .. 17.90mm
Apr 1-7 .. 23.33mm 21.27mm 18.64mm 19.00mm .. 18.65mm
Apr 8-14 .. 21.14mm 19.58mm 19.19mm 19.66mm 17.11mm 18.27mm
Apr 15-21 .. 20.45mm 20.78mm 19.78mm 23.20mm 18.34mm 18.62mm
Apr 22-29 .. 23.32mm 18.74mm 19.97mm 18.77mm 18.61mm 20.20mm
Apr 30-May 6 .. 22.95mm 23.20mm 21.87mm 20.95mm 19.85mm 21.87mm
May 7-14 .. 22.08mm 23.25mm .. 22.30mm .. 21.25mm
May 15-22 .. .. 19.66mm .. .. .. ..
 
Total average .. 22.21mm 20.92mm 19.58mm 19.93mm 18.47mm 19.53mm
 
This Spring has seen larvae out in good numbers and counts seem higher than they have been for a couple of years.

Average larval size during the week April 30 - May 6th, is also up on the same week in the past few years.

 
 
     
Diurnal Glow Worm larval size ranges found during March 2014
..
    9mm-15mm larval size ranges   Intermediate   19mm-28mm larval size ranges
Section .. 9mm 10mm 11mm 12mm 13mm 14mm 15mm .. 16mm 17mm 18mm .. 19mm 20mm 21mm 22mm 23mm 24mm 25mm 26mm 27mm 28mm
A .. .. .. .. .. .. 1 1 .. .. 1 .. .. .. 1 .. .. .. .. .. .. .. ..
B .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. ..
C .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. ..
D .. .. .. .. .. .. .. 3 .. 4 .. 1 .. 1 1 .. 2 .. .. .. .. .. ..
..
    9mm-15mm larval size ranges 31.00%   Intermediate 37.00%   19mm-28mm larval size ranges 32.00%
Total % .. 0.00 0.00 0.00 0.00 0.00 6.25 25.00 .. 25.00 6.25 6.25 .. 6.25 12.50 0.00 12.50 0.00 0.00 0.00 0.00 0.00 0.00
 
Diurnal Glow Worm larval size ranges found during April 2014
..
    9mm-15mm larval size ranges   Intermediate   19mm-28mm larval size ranges
Section .. 9mm 10mm 11mm 12mm 13mm 14mm 15mm .. 16mm 17mm 18mm .. 19mm 20mm 21mm 22mm 23mm 24mm 25mm 26mm 27mm 28mm
A .. .. .. .. .. 1.. .. .. .. .. 3 1. .. .. 1 1 .. 1 .. .. 1 .. ..
B .. .. .. .. .. .. .. 1 .. ..3 5 1. .. 7 3 .. 1 1 ..2 1 .. .. ..
C .. .. .. .. .. .. .. .. .. .. 3 2 .. 3 1 1 2 2 .. .. .. .. ..
D .. .. .. .. .. .. 2 12 .. 7 10 14 .. 6 12 7 6 6 1 4 1 .. ..
..
    9mm-15mm larval size ranges 12.00%   Intermediate 36.00%   19mm-28mm larval size ranges 52.00%
Total % .. 0.00 0.00 0.00 0.00 0.73 1.47 9.55 .. 7.35 15.44 13.23 .. 11.76 12.50 6.61 6.61 7.35 2.20 3.67 1.47 0.00 0.00
 
Diurnal Glow Worm larval size ranges found during May 2014
..
    9mm-15mm larval size ranges   Intermediate   19mm-28mm larval size ranges
Section .. 9mm 10mm 11mm 12mm 13mm 14mm 15mm .. 16mm 17mm 18mm .. 19mm 20mm 21mm 22mm 23mm 24mm 25mm 26mm 27mm 28mm
A .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. 1. .. .. .. ..
B .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. 1 2 .. .. .. .. .. ..
C .. .. .. .. .. .. .. .. .. 1 .. 1 .. .. .. .. 1 .. 2 1 .. .. ..
D .. .. .. .. .. .. .. 1 .. .. .. .. .. .. 2 1 3 .. .. 3 .. .. ..
..
    9mm-15mm larval size ranges 5.00%   Intermediate 10.00%   19mm-28mm larval size ranges 85.00%
Total % .. 0.00 0.00 0.00 0.00 0.00 0.00 5.00 .. 5.00 0.00 5.00 .. 0.00 10.00 10.00 30.00 0.00 15.00 20.00 0.00 0.00 0.00
 
 
Nocturnal Glow Worm larval size ranges found during April 2014
..
    9mm-15mm larval size ranges   Intermediate   19mm-28mm larval size ranges
Section .. 9mm 10mm 11mm 12mm 13mm 14mm 15mm .. 16mm 17mm 18mm .. 19mm 20mm 21mm 22mm 23mm 24mm 25mm 26mm 27mm 28mm
D .. .. .. .. .. .. .. .. .. .. .. .. .. 1 .. 1 .. .. .. .. .. .. ..
E .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. ..
F .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. ..
G .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. ..
I .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. ..
J .. .. .. .. .. .. .. .. .. .. 1 2 .. 5 3 2 1 .. 2 .. 1 .. ..
K .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. ..
L .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. ..
M .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. ..
N .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. ..
O .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. ..
S .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. ..
..
    9mm-15mm larvae size range 00.00%   Intermediate 16.00%   19mm-28mm larvae size range 84.00%
 
Nocturnal Glow Worm larval size ranges found during May 2014
..
    9mm-15mm larval size ranges   Intermediate   19mm-28mm larval size ranges
Section .. 9mm 10mm 11mm 12mm 13mm 14mm 15mm .. 16mm 17mm 18mm .. 19mm 20mm 21mm 22mm 23mm 24mm 25mm 26mm 27mm 28mm
D .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. ..
E .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. ..
F .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. ..
G .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. ..
I .. .. .. .. 1 .2 .. .. .. .. .. 1 .. .. .. .. .. .. .. .. .. .. ..
J .. .. .. .. .. .. .. ..k .. 1 .. 2 .. .. 1 .. .. .. .. .. .. .. ..
K .. .. .. .. .. .. .. 1 .. .. .. .. .. 1 .. .. .. .. .. .. .. .. ..
L .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. 1 .. .. .. .. .. .. ..
M .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. ..
N .. .. .. .. .. .. .. .. .. .. .. .. .. .. 2 .. .. .. .. .. .. .. ..
O .. .. .. .. .. .. .. .. .. .. .. .. .. 1 .. .. .. .. .. .. .. .. ..
S .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. ..
..
    9mm-15mm larvae size range 31.00%   Intermediate 31.00%   19mm-28mm larvae size range 38.00%
 
 
Nocturnal Glow Worm larval size ranges found during June 2014
..
    9mm-15mm larval size ranges   Intermediate   19mm-28mm larval size ranges
Section .. 9mm 10mm 11mm 12mm 13mm 14mm 15mm .. 16mm 17mm 18mm .. 19mm 20mm 21mm 22mm 23mm 24mm 25mm 26mm 27mm 28mm
D .. .. .. .. .. .. .. .. .. .. .. 1 .. .. .. .. .. .. .. .. .. .. ..
E .. .. .. .. .. .. .. .. .. .. .. .1 .. .. .. .. .. .. .. .. .. .. ..
F .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. ..
G .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. ..
I .. .. .. .. .1 .4 .2 .1 .. .1 .1 .. .. .. 1 .. .. 1 .. .. .. .. ..
J .. .. .. .. .. .. .. ..k .. .. .. .. .. .. 1 .. .. .. .. .. .. .. ..
K .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. ..
L .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. ..
M .. .. .. .. .1 1 .. .. .. .. 1 .. .. .. .1 .. .. .. .. .. .. .. ..
N .. .. .. .. .. .. .. .. .. .. .. .. .. .. .1 .. .. .. .. .. .. .. ..
O .. .. .. .. .. .. .. 1 .. .. .. .1 .. .. .. .. .. .. .. .. .. .. ..
S .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. ..
..
    9mm-15mm larvae size range 44.00%   Intermediate 27.00%   19mm-28mm larvae size range 29.00%
 
 
Nocturnal Glow Worm larval size ranges found during July 2014
..
    9mm-15mm larval size ranges   Intermediate   19mm-28mm larval size ranges
Section .. 9mm 10mm 11mm 12mm 13mm 14mm 15mm .. 16mm 17mm 18mm .. 19mm 20mm 21mm 22mm 23mm 24mm 25mm 26mm 27mm 28mm
D .. .. .. .. .. .. .. .. .. .. ..   .. .. .. .. .. .. .. .. .. .. ..
E .. .. .. .. .. .. .. .. .. .. .. . .. .. .. .. .. .. .. .. .. .. ..
F .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. ..
G .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. ..
I .. .... .... .. 2 3 .. 1 .. .. .. .. .. .. .. .. .. .. .. .. .. .. ..
J .. . ... . .. 1 .. .. .. .. ... .. .. ... . . . . . . . . ..
K .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. ..
K .. .. .. .. 1 .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. ..
L .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. ..
M .. .. .. .. . .. .. .. .. .. .. .. .. .. . .. .. .. .. .. .. .. ..
N .. .. .. .. .. .. .. .. .. .. .. .. .. .. . .. .. .. .. .. .. .. ..
O .. .. .. .. .. .. .. .. .. .. .. . .. .. .. .. .. .. 1 .. .. .. ..
S .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. ..
..
    9mm-15mm larvae size range 100.00%   Intermediate 00.00%   19mm-28mm larvae size range 00.00%
 
 
Below:- Arial map showing the survey route we take each night. Sections A, B, C and D are the only areas where larval counts are made. The two yellow dots show the two locations (highest and lowest points on site) where the temperature is taken during the season.
.................
 
     
Beetles    
Insects    
Homepage    
Contents