Insects of Britain and Ireland: the genera of Lepidoptera-Noctuidae
Including Cornutiplusia Kostrowicki.
Adults. Head rough. Eyes glabrous; ciliated. Antennae of males shortly ciliate. Tongue well developed. Labial palps medium to long; ascending.
Wingspan 30–40 mm. Thorax coloured like the forewings, abdomen like the hindwings. Forewings light-and-dark grey; pale grey and grey; neither purplish nor rosy marked or tinged; very complexly patterned (marbled); the patterning well marked (including a silvery white, double median mark, cf. other plusias); exhibiting metallic-enamelled effects; reniform defined; orbicular defined. Hindwings light fuscous; terminally darkened; with a clear discal mark to without a clear discal mark; transversely lined to 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 June and July.
Larvae, pupae. Ventral prolegs 4, or 6 (?). Larvae feeding on Calluna, Vaccinium and Urtica; pupating on vegetative parts of the foodplant (in a white silken cocoon, on twigs or under leaves).
British representation. 2 species (one adventive); South-east England, Central-southern England, South-west England, English Midlands, Northern England, Southern Scotland, Northern Scotland, Wales, and Ireland (commoner northwards); circumflexa* (Essex Y, = Cornutoplusia), interrogationis (Scarce Silver Y).
Illustrations. • S. interrogationis (Scarce Silver Y), with other genera of Plusiinae: Newman. • S. interrogationis and other species, with Cuculliinae and other 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’.