British Insects: Pug moths (Lepidoptera-Geometridae)
= E. absinthiata f. goossensiata, when viewed as an ecotype; E. minutata Guenée; E. notata Stephens.
Adults. Posterior tibiae of males 4-spurred. Wingspan 21–23 mm. Forewings distinctly elongate (more so than in E. absinthiata); margin convexly curved; more or less straight to arched; apically blunt to somewhat pointed (more pointed than in E. absinthiata).
Forewings dingy; brown to fuscous, with striae more sharply angulated than in E. absinthiata, these blackened on the costa and on the edges of the median band also forming dark costal spots; subterminal line whitish, interrrupted, forming a tornal spot. The forewing patterning more or less dominated by the conspicuous, dark discal and smaller costal spots to not restricted to dark discal or costal and discal spots; dominated by two dark costal spots which form with the discal one the corners of a conspicuous anterior-median triangle; triangle of spots not equilateral. Forewings with a dark discal mark. The discal mark dot-like (less elongated than that of E. absinthiata); not whitish-edged. Forewings with a pale tornal spot. Forewing fringes somewhat chequered to not chequered.
Hindwings similar in colour to the forewings, paler and more ochreous-tinged than in E. absinthiata; less conspicuously patterned than the forewings; conspicuously patterned to rather plain (like or unlike the forewings); transversely striated (with faint, darker striae, also an obscure whitish tornal dot); with a clear discal mark (this dark grey); with a pale tornal spot to without a pale tornal spot; the fringes not conspicuously chequered.
The abdomen conspicuously patterned; with an interrupted black sub-basal band; in the male laterally neither black-streaked nor black-spotted.
Neuration. Vein 10 of the forewings arising out of 11 and anastomosing with 9 to form a simple areole.
Early stages, ecology. Botanically rather specialised. Foodplants woody-dicotyledonous and herbaceous-dicotyledonous; Compositae (Asteraceae) and Ericaceae. The larvae found on Calluna and Erica, but also Achillea; feeding on flowers and seeds.
Months of appearance, distribution. Adults abroad June and July; larvae found August, September, and October. South-east England, Central-southern England, South-west England, English Midlands, Northern England, Southern Scotland, Northern Scotland, Wales, and Ireland.
Special key characters. Forewings not reddish-tinged. Hindwings ochreous, or light brown, or brown, or pale fuscous, or pale grey, or grey.
General comments. Common; cf. E. absinthiata.
Illustrations. • E. goossensiata (Ling Pug), with similar Pugs: South. • E. goossensiata (Ling Pug), with other Pugs: Swain (2).
To view the illustrations with detailed captions, go to the interactive key. This also offers full and partial descriptions, diagnostic descriptions, differences and similarities between taxa, lists of taxa exhibiting or lacking specified attributes, and distributions of character states within any set of taxa.
Cite this publication as: ‘Watson, L., and Dallwitz, M.J. 2003 onwards. British insects: Pug moths (Lepidoptera-Geometridae). Version: 29th December 2011. http://delta-intkey.com’.