Photo © Mike Wall

Lesser Treble-bar

Aplocera efformata

Checklist Number
70.193 [B&F: 1868]

Verification
Record will normally be accepted but photo evidence may be required - check with CMR if not sure of identity

Classification

Family:Geometridae
Subfamily:Larentiinae
Genus:Aplocera
Species:efformata
Authority:(Guenée, [1858])

Common throughout much of southern Britain; widely distributed and fairly common in Hampshire and on the Isle of Wight: distribution of accepted records indicates that efformata is more likely in calcareous habitats than plagiata: the present species appears to be comparatively scarce on the Isle of Wight but it is unclear whether this is a true reflection of status. Wingspan 35-41 mm. The main confusion species is Treble-bar A. plagiata, but innermost fascia usually more sharply angled in A. efformata. The most reliable separating characteristic on males is that plagiata has elongated, pointed claspers giving rise to a narrow abdomen tip: efformata has a blunter tip to the abdomen with rather shorter, curved claspers. Larva feeds on St John's-worts Hypericum sp.

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)