Insects of Britain and Ireland: the genera of Lepidoptera-Geometridae
Adults. Crepuscular and nocturnal. Antennae of males simple. Face rough.
The outer margin of the forewing convexly curved; scalloped to smooth (waved). Forewings rosy fuscous, with dark striae; predominantly fuscous and purple, purplish, red, pinkish or rosy, or pale fuscous; with a clear discal mark (this black). The discal mark not dark-ringed. The outer margin of the hindwings scalloped. Hindwings conspicuously patterned to plain (with a sharp wavy marginal line emphasising the scalloping, but the other lines generally quite faint); lighter fuscous; with a clear discal mark (this dark); transversely lined (with several clear dark striae, and a sharp, wavy marginal one).
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 Prunus spinosa and Rhamnus.
British representation. 1 species; South-east England, Central-southern England, South-west England, English Midlands, Northern England, Southern Scotland, Wales, and Ireland. Living adults found August to December, or January to April (hibernating). T. dubitata (The Tissue).
Illustrations. • T. dubitata (The Tissue), with Euphyia, Pareulype, Philereme and Rheumaptera: Newman 1869. • T. dubitata, with other Larentiinae: Kirby 49.
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. delta-intkey.com’.