Production of mud by Ancistrocerus wasp

Watching Ancistrocerus wasps nest-making in my garden bee-hotel over recent years, I had assumed that they collected mud from damp areas (in a similar way to Osmia bicornis). Last year, I was able to follow a wasp from the bee-hotel to its "collecting point" and saw that it was collecting dry soil particles. This year I witnessed the same thing, with an Ancistrocerus wasp repeatedly returning to the same point. I was able to get a series of photographs from one visit showing her collecting individual soil granules (the soil was bone dry) and then flying off with a wet mud-ball.


Species Gallery and Accounts


With the launch of the NBN's Living Atlas and the closure of the NBN Gateway maps, currently it is not possible to display maps from NBN data. We hope this will soon be resolved and maps restored to the species accounts. Please be patient - we have around 900,000 records to upload, so the wait will be worth it!

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Megachile ligniseca, records and Acer cutting

Two recent records for M. ligniseca in Mawdesley (2015) and Holmeswood ('16) - in gardens (using trap nests) of these villages in Lancashire (Half way between Chorley and Southport).

The bee last year was cutting from Norway Maple (with Sycamore also present, seemingly not used) and this years bee was likely cutting from Field Maple (no Sycamore present in the immediate vicinity).

Probably not surprising observations but not something I've read.

Ben Hargreaves.



BWARS AGM and Members’ Weekend 8 & 9 OCTOBER 2016 - National Museum Cardiff


The BWARS Committee invite all our members to join us at Cardiff Museum on Saturday 8th October and/or Sunday 9th October for the BWARS AGM and members’ weekend.

The BWARS members’ weekend is a great opportunity to meet up with friends – old and new. The official business is conducted at the AGM on Sunday but the meeting is mainly informal.

Display Date: 

Saturday & Sunday 8 & 9 October 2016

Sort Date: 

Sat, 08/10/2016


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