Insects of Britain and Ireland: the families of Lepidoptera
Adults relatively long-bodied; relatively slender-bodied (wingspan more than 15 times the thoracic width); conspicuously raising the hind-legs above the body in repose; wings in repose packed with the forewings directed backwards to cover hindwings and abdomen.
Head smooth (shiny). Antennae of medium length to long; extending to about about 0.75 times the length of the forewing. Antennae of males simple; simply-ciliate (with long, fine cilia). The antennal scape without a pecten; not forming an eye cap. Ocelli absent. Chaetosemata absent (?). Maxillary palps much reduced; 1 segmented. Labial palps well developed (very long); ascending (recurved); 3 segmented (?). Proboscis fully developed; scaly towards the base.
Wingspan 10–14 mm; 15–17 times the thoracic width. Forewings very narrow; about 12 times as long as wide. Tornus undetectable. Ground colour predominantly yellow, or light brown (ochreous-yellow). Hindwings narrow-elongate and very long-fringed; linear-lanceolate; very much narrower than the forewings to quite markedly narrower than the forewings; with a pointed apex. The fringe of the hindwings about 6 times the width of the membrane. The upper surfaces plain; with neither discal spot nor transverse lines; hindwings with a frenulum.
Neuration of forewings and hindwings dissimilar. Forewings 12 veined; with 2 anal veins. The anal veins of the forewings comprising 1b and 1c. Forewings exhibiting a tubular vein 1c. Vein 1b of the forewings simple. The transverse vein complete. Discal cell of the forewings without a tubular media (M) vein. Hindwings 8 veined; with 1 anal vein. The anal veins of the hindwings representing 1b only. Hindwings lacking vein 1a; lacking a tubular vein 1c. Vein 1b of the hindwings furcate proximally. The transverse vein incomplete (open between veins 5 and 6). 6 veins arising from the hindwing cell. The cell-derived hindwing veins all arising independently of one another. Vein 8 of the hindwings completely independent of the cell; not approximating to vein 7.
Fore-legs with a tibial epiphysis. Tibiae of middle legs 2-spurred. Posterior tibiae 4-spurred; hairy (with rough, bristly hairs).
Eggs, larvae and pupae. Larval prolegs 10. Larvae concealed feeders (in Alnus fruits). Associated with Alnus.
Pupae concealed (in a silken cocoon); on the surface of the ground, or above the ground (?). Empty pupae protruded from place of concealment.
British representation. Genera 1 (Stathmopoda); 1 species.
Classification. Microlepidoptera. Suborder Ditrysia. Superfamily Gelechioidea.
Comments. Hind-legs with whorls of bristles at the apex of each tarsal segment.
Illustrations. • Stathmopoda pedella. • Stathmopoda pedella, details.
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Cite this publication as: ‘Watson, L., and Dallwitz, M.J. 2003 onwards. Insects of Britain and Ireland: the families of Lepidoptera. Version: 8th June 2016. delta-intkey.com’.