Insects of Britain and Ireland: the genera of Lepidoptera-Noctuidae

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L. Watson and M. J. Dallwitz

Trichoplusia McDunnough

Adults. Head rough. Eyes glabrous; ciliated. Antennae of males shortly ciliate. Tongue well developed. Labial palps medium to long; ascending.

Wingspan 30–40 mm. Forewings grey and sepia brown; brown and grey; purplish marked or tinged to rosy marked or tinged; complexly patterned; the patterning well marked (mottled and marbled, light brown, rosy-whitish and dark fuscous, and exhibiting medianly a silvery-white ‘Y’-shaped mark indicative of a plusia); exhibiting metallic-enamelled effects (?); reniform defined; orbicular defined; claviform undefined. Hindwings pale fuscous; terminally darkened; with a clear discal mark to without a clear discal mark; 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 August and September.

Larvae, pupae. Ventral prolegs 4, or 6 (?). Larvae feeding on Dicot herbs, especially Cruciferae.

British representation. 2 species; South-east England, Central-southern England, and South-west England; ni (Ni Moth), vittata* (Streaked Plusia, adventive).


Illustrations. • T. ni (Ni Moth), with 5 other genera of Plusiinae.

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.’.