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

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L. Watson and M. J. Dallwitz

Costaconvexa Agenjo

Adults. Antennae of males simple. Face rough.

Wingspan 25–27 mm. Forewings pale greyish-ochreous, with dark striae; with a clear discal mark (this dark, often pale-ringed); with a distinct median band to without a median band (the band darker, or lightened within and scarcely distinguished). The outer margin of the hindwings smooth. Hindwings conspicuously patterned; pale greyish ochreous; predominantly pale ochreous, or pale fuscous; without a clear discal mark; with rather numerous, quite dark lines.

Vein 10 of the forewings arising independently of 9; arising independently, anastomosing with 11 and 9 to form a double areole. Hindwings exhibiting a tubular vein 5. Vein 5 of the hindwings arising from about the middle of the transverse vein, or arising from below the middle of the transverse vein (?). Vein 8 of the hindwings approximated to or anastomosed with the upper margin of the cell to the middle or beyond. Hindwing veins 6 and 7 stalked.

Posterior tibiae of males 4-spurred.

Early stages. Larvae feeding on Galium?.

British representation. 1 species (adventive); East English Midlands (Cambridgeshire - extinct?). Living adults found April and August (double brooded). C. polygrammata (Many-lined Moth).

Subfamily. Larentiinae.

Illustrations. • British Epirrhoe, Costaconvexa, Camptogramma, Entephria, Larentia, Anticlea, Mesoleuca, Pelurga, Lampropteryx, Cosmorhoe, Nebula: Newman 1869.

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-Geometridae. Version: 8th June 2016.’.