| | 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, South-east England (in marshes); albovenosa (Reed Dagger, Powdered Wainscot).
Acronictinae.
Illustrations. • S. albovenosa (Powdered Wainscot), and other Acronictinae: Newman. 1, Moma alpium (Scarce Merveille-du-jour); 2, Acronicta megacephala (Poplar Grey); 3, Acronicta aceris (The Sycamore: 1b representing a dark var.); 4, Acronicta leporina (The Miller); 5, Acronicta alni (The Alder); 6, Acronicta tridens (Dark Dagger, 6a representing the typical form); 7, Acronicta psi (Grey Dagger); 8, Acronicta strigosa (Marsh Dagger); 9, Acronicata menyanthidis (Light Knot-Grass, a and b representing the typical form); 10, Acronicta auricoma (Scarce Dagger); 11, Acronicta euphorbiae myricae (Sweet Gale Moth); 12, Acronicta rumicis (The Knot-Grass); 13, Simyra albovenosa (Powdered Wainscot); 14, Craniophora ligustri (The Coronet); 15, Cryphia algae (Tree-lichen Beauty); 16, Cryphia domestica (Marbled beauty); 17, Cryphia muralis (Marbled Green). From Newman, 1869. • Acronictinae: Kirby. ACRONICTINAE. 10, Simyra albovenosa (Reed Dagger); 12, Acronicta leporina (Miller); 13, Acronicata aceris (Sycamore); 14, Acronicta megacephala (Poplar Grey); 15, Acronicta alni (Alder Moth); 16, Acronicta tridens (Dark Dagger); 17, Acronicta psi (Grey Dagger); 18, Acronicta auricoma (Scarce Dagger); 19, Acronicta rumicis (Knot-grass); 20, Craniophora ligustri (Coronet). From Kirby 33.
We advise against extracting comparative information from the descriptions. This is much more easily achieved using the DELTA data files or the interactive key, which allows access to the character list, illustrations, 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. See also Guidelines for using data taken from Web publications.
Cite this publication as: ‘Watson, L., and Dallwitz, M.J. 2003 onwards. Insects of Britain and Ireland: the genera of Lepidoptera-Noctuidae. Version: 14th February 2021. delta-intkey.com’.
