Water Measurer Hydrometra stagnorum

Water Measurer Hydrometra stagnorum (Linnaeus, 1758)
Looking like a very small black Stick Insect, the Water Measurer is likely to escape attention, as it did us for many years. Able to easily walk on the surface of ponds and other still waters, it hunts insects trapped on, or just under the surface. With an almost mechanical-like gait when walking, movement is slow. This one was photographed on a shallow area of water at the former sand quarry at Market Warsop in April 2013, but we have also recorded it from Warsop Main Pit Top.
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The records for the Nottinghamshire distribution map are currently provided by the following contributors - Trevor and Dilys Pendleton. Netherfield Wildlife Group. Nottinghamshire Wildlife Trust. Tim Sexton. Peter Kirby (Bentinck Tip & Void Invertebrate survey 2007). Sorby Natural History Society. Peter Kirby (Ploughman Wood Invertebrate survey 1998 on behalf of the Nottinghamshire Wildlife Trust).

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 2021


Nottinghamshire (VC56) distribution of Hydrometra stagnorum