Insects of Britain and Ireland: the genera of Lepidoptera-Noctuidae
Erastria Ochsenheimer, Hyela Stephens; ~ Deltote.
Adults. Head loosely scaled. Eyes glabrous; not ciliated. Antennae of males ciliate. Labial palps medium; ascending.
Wingspan 22–26 mm. The thorax dark coloured like the ground colour of the forewings, the abdomen paler and like the hindwings. Forewings dark brown or blackish, with pale markings; brown, or blackish; complexly patterned; the patterning well marked (with the broad, pale subcostal streak, sub-marginal band and hind-marginal streak continuous, except near the wing-tip); reniform defined (joined with and of the same whitish hue as the broad sub-costal streak); orbicular undefined; claviform undefined. Hindwings dingy fuscous; terminally darkened; without a clear discal mark; transversely lined (with a darker band); 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 slightly crested (posteriorly). Middle tibiae without spines. Posterior tibiae with spines; with appressed scales. Abdomen not crested.
Living adults found June.
Larvae, pupae. Larvae feeding on Cyperaceae and coarse grasses; pupating in the soil.
British representation. 1 species; South-east England, Central-southern England, South-west England, English Midlands, Northern England, Southern Scotland, Northern Scotland, Wales, and Ireland (local); uncula (The Silver Hook).
Illustrations. • E. uncula (The Silver Hook), with Heliothidinae and other Acontiinae: Newman. • Acontiinae, Amphipyrinae, Hadeninae and Heliothidinae: 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’.