ws |
fw |
flight |
time |
10.5-13 |
4.8-6.2 (11) |
Jul |
? |
lfp |
habitat |
distribution |
status |
birch (Betula spp) |
heath, open woodland |
E, nW, cS |
common |
ID: Group D - plain with a pale costal stripe (antennal rings fade in apical ¼)
Genital dissection required to distinguish from other species in Group D
Genital dissection required to distinguish from other species in Group D
Very difficult to distinguish males from C.alnifoliae with confidence, the external appearance and genitalia being very similar (see below). It may be that males can only be reliably ascertained by location, habitat, association with known females or raising from larva.
C. limosipennella also has a similar external appearance but its antennae are ringed to the apex (and the genitalia are distinct in both sexes).
C. limosipennella also has a similar external appearance but its antennae are ringed to the apex (and the genitalia are distinct in both sexes).
Male genital key: Sacculus narrow, elongate ending in a lateral process with an anterior flap-like subapical tooth > 4 species with very similar genitalia.
Wingspan 10.5-13mm, antennal ring fade in apical ¼ > C.milvipennis or C.alnifoliae. According to the key in MBGBI3, the subapical tooth is about as long as wide in C.milvipennis; about twice as long as wide in C.alnifoliae - but when comparing images at Moth Dissection this distinction appears entirely unconvincing. |