73.170 (2343a) Lesser Common Rustic Mesapamea didyma (Esper, 1788)

Status
Resident. Common.
 
Flight period
J F M A M J J A S O N D
























 
History
It wasn't until 1983 that it was realised that there were two different species under M. secalis and so M. didyma was born.
 
The first confirmed record came in August 1987, when Bernard Skinner trapped it at Sandhead, Wigtownshire. Since then Tony Davis caught it and confirmed it at Torrs Warren (VC74) in August 1997, Fleet Forest, Gatehouse of Fleet and Wood of Cree (both VC73), all in August 1997.
 
There are no confirmed records for Dumfriesshire.
 
Life cycle
One generation. Overwinters as a larva during September to May, feeding inside a stem and pupating in a cocoon underground.
 
Larval foodplants
Grasses.
 
Identification
As its name suggests it is smaller but there are no visible external features to separate it from Common Rustic, so genitalia examination required.
 
Habitat
A wide variety of grassland sites.
 
Recorders' notes
Only select a minimum of specimens to determine to species level at new sites.
© Don't forget to change the species code!!

Local distribution map

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Distribution map displays records from the National Biodiversity Network (See terms and conditions).

The following datasets are included:

  • Butterfly Conservation - Macro-moth provisional distribution for the British Isles (excluding the Republic of Ireland) from the National Moth Recording Scheme
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