Insects of Britain and Ireland: the families of Lepidoptera
Adults relatively long-bodied; medium built (wingspan more than 8 and less 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-scaled). Antennae of medium length to long; extending to about about 0.6–0.8 times the length of the forewing. Antennae of males simple; shortly simply-ciliate. The antennal scape without a pecten. Ocelli present (prominent). Chaetosemata absent. Maxillary palps much reduced (very short); 1 segmented (?). Labial palps porrect to ascending (sub-ascending, curved, fairly long). Proboscis fully developed.
Wingspan 10–12 mm; about 12 times the thoracic width. Forewings narrow; about 3.9 times as long as wide. Tornus weakly defined. The outer and hind margins angled at about 130 degrees. Forewings apically pointed; ground colour predominantly light brown (pale shining ochreous). Hindwings narrow-elongate and very long-fringed; lanceolate; very much narrower than the forewings to quite markedly narrower than the forewings; with a pointed apex. The fringe of the hindwings 2–3 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 13 veined; with 2 anal veins. The anal veins of the forewings comprising 1a and 1b. Forewings lacking 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. Hindwing vein 7 to the termen. Hindwings with well developed neuration; 9 veined; with 2 anal veins. The anal veins of the hindwings comprising 1a and 1b. Hindwings exhibiting vein 1a; exhibiting a tubular vein 1c, or lacking a tubular vein 1c (?). Vein 1b of the hindwings simple. Hindwings with a discal cell. The transverse vein complete. 6 veins arising from the hindwing cell. The cell-derived hindwing veins all arising independently of one another. Veins 6 and 7 of the hindwings not parallel. 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.
Eggs, larvae and pupae. Larval prolegs 10. Larvae exposed feeders (under Rubus leaves).
Pupae concealed (in an open-network cocoon); on the surface of the ground, or above the ground (?). Empty pupae protruded from place of concealment.
British representation. Genera 1; 1 species (Schreckensteinia festaliella).
Classification. Microlepidoptera. Suborder Ditrysia. Superfamily Schreckensteinioidea.
Comments. Hind tarsal segments with apical whorls of bristles, and the tibia with median and apical whorls of bristles.
Illustrations. • Schreckensteinia festaliella (Oblong Gold-head Tinea): Br. Ent. 663. • Schreckensteinia festaliella: Br. Ent. 663, legend+text. • Schreckensteinia festaliella: Br. Ent. 663, text cont.. • Schreckensteinia festaliella, details of head and neuration. • Schreckensteinia festaliella, neuration. • cf. Schreckensteinia festaliella: Hübner, 1800.
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 families of Lepidoptera. Version: 8th June 2016. delta-intkey.com’.