Insects of Britain and Ireland: the genera of Lepidoptera-Noctuidae
Adults. Head with a projecting, quadrangular horny frontal plate (concealed in dense scales). Eyes glabrous; not ciliated. Antennae of males ciliate. Tongue poorly developed.
Wingspan 27–44 mm. Forewings olive brown, or ochreous; plain, or patterned transversely (plain apart from dots representing the stigmata, or with transverse lines represented by faint dots); the patterning when present, obscure; reniform defined, or undefined; orbicular defined, or undefined (mostly); claviform undefined. Hindwings fuscous, or yellowish, or brownish, or grey; plain to terminally darkened; with a clear discal mark (rarely), or without a clear discal mark; transversely lined (or dots), or without transverse lines; exhibiting vein 5. Vein 5 of the hindwings weak; arising nearer to vein 6 than to vein 4. Thorax slightly crested (anteriorly). Middle tibiae without spines. Posterior tibiae without spines. Abdomen not crested.
Living adults found July and August, or August and September.
Larvae, pupae. Larvae posteriorly rounded, or posteriorly tapered; feeding on internal stem tissues of helophytic Monocots (Phragmites, Scirpus, Sparganium, Typha, Iris); pupating within the stems of the foodplant.
British representation. 5 species; South-east England, Central-southern England, South-west England, English Midlands, Northern England, and Wales; A. algae (Rush Wainscot), A. dissoluta (Brown-veined Wainscot), A. geminipuncta (Twin-spotted Wainscot), A. neurica (White-mantled Wainscot), A. sparganii (Webbs Wainscot).
Illustrations. • The British species, with 14 related genera: Newman. • Amphipyrinae: 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’.