Trypoxylon sp. (Latreille, 1796)
Genus: Trypoxylon.
Family: Crabronidae
Flight Season: May to late August.
Trypoxylon is associated with Digger Wasps and is fairly common and wide-spread across Britain. Mainly nests in previously made holes and cavities found in dead-wood and weather worn walls. The female will then seal each cell, usually with mud, soon after she has laid her egg on a small spider captured and paralised by her venomous sting. When the egg hatches, the larva will begin to feed on the paralised spider and will eventually leave the cell, as an adult wasp.
Habitat: Found mainly in wooded areas, such as woodland edges and hedgerows. (Wherever small spiders are found), unkept gardens, amongst brambles and shrubs in overgrown grass meadows and riverside embankments.
Images below show, Trypoxylon capturing a small spider.