11.003 .... B&F 0176
Dahlica triquetrella (Hübner, 1813)
Status .....A much rarer species in Nottinghamshire, than both Dahlica lichenella and Dahlica inconspicuella. There are currently records from the flood wall at Attenborough NR (Rogers, R.), Newark Railway Station car park and near the Hucknall Road entrance to Nottingham City Hospital (Pendleton, T.A. and Pendleton, D.T.). Although the larvae of all three Dahlicas produce very similar cases, those of Dahlica triquetrella are slightly larger (6mm-10mm) and covered with various insect fragments at the front end. If anything, Dahlica triquetrella cases are more similar to those of Diplodoma laichartingella, but less obviously triangular in cross section.
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Female Dahlica triquetrella, reared ex-Market Warsop larva photographed February 27th 2021
 
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Female Dahlica triquetrella, reared ex-Newark larva photographed March 31st 2016
 
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Larva and larval case, photographed at Newark October 2015
 
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Nottinghamshire (VC56) distribution of Dahlica triquetrella
 
Dahlica triquetrella habitat at Newark Railway Station, October 31st 2015. Five larval cases were found along the top fence rail and one on a nearby electrical junction box at the nearby level crossing.
 
The records for the Nottinghamshire distribution map are currently provided by the following contributors - Richard Rogers. Nottinghamshire Wildlife Trust. Trevor and Dilys Pendleton.

You can contribute your own records to help us gain an accurate status of this species in Nottinghamshire. Send an Excel spreadsheet of your records via the 'contact us' link at the top of the homepage.

Updated January 2024

copyright © Trevor and Dilys Pendleton (www.eakringbirds.com) . .
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