Ectemnius cavifrons (Thomson, 1870)
Ectemnius cavifrons is one of ten UK Ectemnius species, which are virtually impossible to seperate by photographs alone. They nest in wood, excavating tunnels with several cells which are then stocked with food (Hoverflies in this instance) for the developing brood. During the Summer of 2011, we certainly had several individuals visiting our garden at Market Warsop, where they delighted us with the antics. These are highly alert insects, will turn to face you on their favoured watch post when approached and are great hunters, hovering before pouncing on their prey and taking it back to the nest. Episyrphus balteatus was certainly the preferred prey we saw them take.
Nottinghamshire (VC56) distribution of Ectemnius cavifrons
The records for the Nottinghamshire distribution map are currently provided by the following contributors - Trevor and Dilys Pendleton. Nottinghamshire Wildlife Trust. Tim Sexton. Wil Heeney. Trevor and Dilys Pendleton (Sherwood Forest Invertebrate Directory 2014). Stuart Warrington. The National Trust (Clumber Park invertebrate records). Chris Davison. Clumber Park SSSI Saproxylic Invertebrate Survey - A report to Natural England by EMEC Ecology 2019. Brian Wetton.

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 November 2022

copyright Trevor and Dilys Pendleton ( . .
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