| | Insects of Britain and Ireland: the genera of Lepidoptera-Geometridae |
Coenocalphe.
Adults. Antennae of males simple. Face rough.
Wingspan 28–30 mm. The outer margin of the forewing slightly sigmoid-curved, or convexly curved. Forewings pale brownish with darker striae; predominantly light brown; without a clear discal mark. The outer margin of the hindwings scalloped to smooth. Hindwings plain; pale ash-grey; predominantly pale grey; without a clear discal mark; transversely lined (with two or more faint, 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 grasses.
British representation. 1 species; Southern Scotland, Northern Scotland, and Ireland. Living adults found May and June. C. lapidata (Slender-striped Rufous).
Subfamily. Larentiinae.
Illustrations. • Coenocalpe, Colostygia, Electrophaes, Eustroma, Hydriomena, Horisme, Melanthia: Newman 1869. 1, Eustroma reticulatum (Netted Carpet); 2a, Electrophaes corylata (Broken-barred Carpet, typical form); 2b, Electrophaes corylata (Broken-barred Carpet, var.); 3, Colostygia olivata (Beech-green Carpet); 4, Colostygia multistrigaria (The Mottled Grey); 5, Colostygia pectinataria (Green Carpet); 6a-e, Hydriomena furcata (July Highflier); 7, Hydriomena impluviata (May Highflier); 8a-b, Hydriomena ruberata (Ruddy Highflier); 9, Horisme vitalbata (Small Waved Umber); 10, Horisme tersata (The Fern); 11, Coenocalpe lapidata (Slender-striped Rufous); 12, Melanthia procellata (Chalk Carpet). From Newman (1869).
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’.
