Main: (Geometridae / Ennominae)
70.245 [B&F: 1663] March Moth (Alsophila aescularia) ([Denis & Schiffermüller], 1775)

 

Notes: Common in open woodland, parks and gardens throughout the British Isles. Widespread and common in Hampshire and on the Isle of Wight. Wingspan male 34-38 mm, female wingless. Male has a distinctive resting posture and shape, with narrow, overlapping forewings and straight costa, giving the appearance of an arrow-head, and the forewing shows a distinct dentate subterminal fascia; the flightless female is very easy to overlook, but can be distinguished from other flightless females by the brown anal tuft and complete absence of wings. Larva feeds on numerous broad-leaved trees and shrubs, including Oak, Hawthorn, Blackthorn and Crab Apple, over-wintering as a pupa.

Flightime guide
JFM AMJ JAS OND

Records Received By Year

% of total records
Max records: 142
90 91 92 93 94 95 96 97 98 99 00 01 02 03 04 05 06 07 08 09 10 11 12 13

Percentage of Total Records

Total records
Max Percentage: 0.10222936
90 91 92 93 94 95 96 97 98 99 00 01 02 03 04 05 06 07 08 09 10 11 12 13

Phenology - Adult Records

Max records: 268
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec

Phenology - Larval Records

Max records: 4
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec

Distribution Map

Historical distribution at tetrad resolution
Click for density map

Record Density

As above but the larger the symbol, the greater the number of records
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