| | 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).
Subfamily. Larentiinae.
Illustrations. • T. dubitata (The Tissue), with Euphyia, Pareulype, Philereme and Rheumaptera: Newman 1869. 1, Pareulype berberata (Barberry Carpet); 2, Euphyia biangulata (Short-cloaked Carpet); 3a-b, Euphyia unangulata (Sharp-angled Carpet); 4a, Rheumaptera hastata (Argent and Sable); 4b, Rheumaptera hastata (variety); 5, Rheumaptera cervinalis (Scarce Tissue); 6, Rheumaptera undulata (Scallop Shell); 7, Triphosa dubitata (The Tissue); 8a-b, Philereme vetulata (Brown Scallop); 9a-b, Philereme transversata britannica (The Dark Umber). From Newman (1869). • T. dubitata, with other Larentiinae: Kirby 49. LARENTIINAE. 8, Lythria purpuraria; 9, Scotopteryx luridata (The Belle); 10, Larentia clavaria (Mallow); 11, Scotopteryx chenopodiata (Small Mallow); 12, Scotopteryx moeniata; 13, Scotopteryx bipunctaria (Chalk Carpet); 14, Minoa murinata (Drab Looper); 15, Odezia atrata (Chimney Sweep); 16, cf. Schistostege decussata; 17, Lithostege griseata; 18, Lithostege farinata (the Snowy); 19, Aplocera plagiata (The Treble-bar); 20, Carsia sororiata (Manchester Treble-bar); 21, Chesias legatella (The Streak); 22, Chesias rufata (Broom-tip); 23, Trichopteryx carpinata (Early Tooth-striped); 24, Celonoptera mirificaria; 25, Operophtera brummata (Winter Moth); 26, Operophtera fagata (Northern Winter Moth); 27, Triphosa sabaudiata; 28, Triphosa dubitata (Tissue); 29, Rheumaptera cervinalis (Scarce Tissue); 30, Rheumaptera undulata (Scallop Shell); 31, Philereme vetulata (Brown Scallop); 32, Philereme transversata transversata (Dark Umber). From Kirby 49, with names updated.
We advise against extracting comparative information from the descriptions. This is much more easily achieved using the DELTA data files or the interactive key, which allows access to the character list, illustrations, 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. See also Guidelines for using data taken from Web publications.
Cite this publication as: ‘Watson, L., and Dallwitz, M.J. 2003 onwards. Insects of Britain and Ireland: the genera of Lepidoptera-Geometridae. Version: 14th February 2021. delta-intkey.com’.
