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Species Account for Microdynerus exilis

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Microdynerus exilis  (Herrich-Schaeffer, 1839)
a mason wasp
Aculeata: Eumenidae

Microdynerus exilis 2 Copyright: P.R. Harvey

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Taxonomic group: bees and wasps (Aculeata) - County data

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Essex RDB: Listed
Threat: Regionally Important
Saproxylic species

Records: 33
First Record: 1992
Latest Record: 2020

1992-on hectads: 13
Pre-1992 hectads: 0
Total hectads: 13
Additional Phenology Data


Microdynerus exilis 2
Microdynerus exilis 2
Microdynerus exilis 1
Microdynerus exilis 1

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Species text
Microdynerus exilis was first recorded in Britain in 1937, since when it has been found in a number of counties from Dorset to Norfolk. This late discovery and apparent subsequent spread may suggest that this wasp is a fairly recent colonist or was perhaps introduced with timber. It is still restricted to southern England almost completely south of a line between the Wash and Severn (map in Edwards & Telfer 2001). It is a mason wasp which nests in old beetle burrows in dead wood, including in old wooden posts. Recorded habitats are varied, including woodland, parkland, gardens, heathland edge, chalk downland and gravel pits. References

Species text last edited on Tue Mar 20th 2007 by user 3


Broad Habitat Data (based on 13 records with habitat information)

no subhabitat data available

Structural Habitat Data (based on 6 records with structural habitat information)

Habitat Detail and Method (based on 33 records with habitat detail and method information)

Recorded management for locations with Microdynerus exilis

Recorded substrate and hydrology for locations with Microdynerus exilis

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