Photo © Mike Wall

Lesser Common Rustic

Mesapamea didyma

Checklist Number
73.170 [B&F: 2343a]

Verification
Record requires retention of specimen until confirmed, and may require dissection. Consult with CMR if unsure

Classification

Family:Noctuidae
Subfamily:Xyleninae
Genus:Mesapamea
Species:didyma
Authority:(Esper, 1788)

Common in calcareous grassland, gardens, farmland, heathland and woodland throughout much of the British Isles. Only separated from M. secalis and M. remmi in the 1980s, and individuals are mostly recorded as an aggregate of the three species. In Hampshire and on the Isle of Wight distinctly less common than M. secalis, but since most Mesapamea are not specifically identified, the maps do not reflect the full picture. Wingspan 28-34 mm. Highly polymorphic, and impossible to distinguish from Common Rustic M. secalis and Remm's Rustic M. remmi, except by dissection of the genitalia. Larva feeds on various grasses, including Cock's-foot, Red Fescue, Sheep's-fescue, Tall Fescue and certain cereal crops.

The abundance in each month is indicated as follows:

No records
Very occasional
Irregular
Uncommon
Off-peak, but not unusual
Off-peak, but not unusual
Main flight time
J F M A M J J A S O N D
Adult
Larval

Records by week (adult)

Records by week (larval)