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.
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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: 16th May 2016. delta-intkey.com’.