Insects of Britain and Ireland: the genera of Lepidoptera-Noctuidae
Arsilonche Lederer, Simyra Hübner.
Adults. Head rough (-haired). Eyes glabrous; not ciliated. Antennae of males minutely ciliate. Tongue poorly developed. Labial palps rather short; porrect.
Forewings very pale whitish fuscous; whitish, or pale fuscous; plain, or longitudinally streaked (then with a short, dark basal streak); the patterning well marked to obscure; reniform undefined; orbicular undefined; claviform undefined. Hindwings white to whitish; plain; without a clear discal mark; without transverse lines; exhibiting vein 5. Vein 5 of the hindwings weak; arising nearer to vein 6 than to vein 4. Thorax not crested. Middle tibiae without spines. Posterior tibiae without spines; rough-scaled. Abdomen not crested.
Living adults found in June.
Larvae, pupae. Larvae conspicuously hairy; with red markings to without red markings (sometimes marked with reddish-orange on the side of each segment); posteriorly rounded; feeding on Phragmites, Cyperaceae and other helophytic plants, nocturnally; pupating on vegetative parts of the foodplant (in a silken cocoon on the upper surface of a folded leaf blade).
British representation. 1 species; East English Midlands, or South-east England (in marshes); albovenosa (Reed Dagger, Powdered Wainscot).
Illustrations. • S. albovenosa (Powdered Wainscot), and other Acronictinae: Newman. • Acronictinae: 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’.