Insects of Britain and Ireland: the genera of Lepidoptera-Noctuidae
Habrrostola Sodovsky, Unca Lhomme, Unca Oken.
Adults. Head rough. Head without a frontal tuft. Eyes glabrous; ciliated. Antennae of males shortly ciliate. Tongue well developed. Labial palps medium to long; ascending (second joint bent, terminal straight).
Wingspan 32–40 mm. Head, thorax and abdomen grey-brown. Forewings light fuscous with a broad darker fuscous median band, or light grey with a darker grey median band; complexly patterned; the patterning well marked (with complex transverse lines sharply delimiting the median area); patterned lighter and darker, or lighter and darker and in contrasting colours; neither shining-metallic nor with shining metallic effects; reniform defined; orbicular defined; claviform undefined. Hindwings fuscous; terminally darkened; with a clear discal mark to without a clear discal mark; without transverse lines; exhibiting vein 5. Vein 5 of the hindwings strong; arising nearer to vein 4 than to vein 6; convergent on vein 4 near their bases. Thorax crested. Middle tibiae without spines. Posterior tibiae with spines; rough-scaled. Abdomen crested.
Living adults found May to August (sometimes double brooded).
Larvae, pupae. Ventral prolegs 8. Larvae posteriorly humped; feeding on Humulus and Urtica; pupating on vegetative parts of the foodplant.
British representation. 2 species; South-east England, Central-southern England, South-west England, English Midlands, Northern England, Southern Scotland, Northern Scotland, Wales, and Ireland; A. triplasia (Dark Spectacle), A. tripartita (Light Spectacle).
Illustrations. • A. tripartita (Spectacle) and A. triplasia (Dark Spectacle), with Macdunnoughia: photos. • The British species, with 5 other genera of Plusiinae: Newman. • Cuculliinae and Plusiinae: Kirby.
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-Noctuidae. Version: 8th June 2016. delta-intkey.com’.