Insects of Britain and Ireland: the genera of Lepidoptera-Geometridae
Adults. Antennae of males simple; shortly simply-ciliate. Face smooth.
Wingspan 30–36 mm. Forewings 1.7–1.8 times as long as wide. The outer margin of the forewing convexly curved. Forewings greyish whitish and blackish sprinkled, or greyish ochreous; with a clear discal mark, or without a clear discal mark; with a distinct median band (the band dark), or without a median band. Hindwings plain; whitish or pale ochreous-grey; with a clear discal mark (this grey); transversely lined (with several faint grey lines, or just a posterior one).
Vein 10 of the forewings arising independently of 9; arising independently, anastomosing with 11 and 9 to form a double areole. Hindwings exhibiting a tubular vein 5. Vein 5 of the hindwings arising from about the middle of the transverse vein, or arising from below the middle of the transverse vein (?). Vein 8 of the hindwings approximated to or anastomosed with the upper margin of the cell to the middle or beyond. Hindwing veins 6 and 7 separate.
Posterior tibiae of males 2-spurred (females also?).
Early stages. Larvae feeding on Lonicera, Salix, Ligustrum, etc.
British representation. 2 species; South-east England, Central-southern England, South-west England, English Midlands, Northern England, Southern Scotland, Northern Scotland, and Wales. Living adults found April and May. T. carpinata (Early Tooth-striped), T. polycommata (Barred Tooth-striped).
Illustrations. • Larentiinae: Trichopteryx polycommata (Barred Tooth-striped: B. Ent. 81). • Trichopteryx polycommata: B. Ent. 81, legend. • T. polycommata (Barred Tooth-striped) and T. carpinata (Early Tooth-striped), with Acasis, Aplocera, Asthena, Carsia, Chesias, Discoloxia, Euchoeca, Hydrelia, Lithostege, Lobophora, Minoa, Odezia, Pterapherapteryx: Newman 1869. • T. carpinata, with other Larentiinae: Kirby 49. • Larentiinae: Trichopteryx polycommata (Barred Tooth-striped: B. Ent. 81). • Trichopteryx polycommata: B. Ent. 81, legend.
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. Insects of Britain and Ireland: the genera of Lepidoptera-Geometridae. Version: 8th June 2016. delta-intkey.com’.