Insects of Britain and Ireland: the families of Lepidoptera

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L. Watson and M. J. Dallwitz


Adults relatively long-bodied; wings in repose packed with the forewings directed backwards to cover hindwings and abdomen.

Head smooth (-scaled). Antennae long; extending to about about 0.8 times the length of the forewing. Antennae of males simple; non-ciliate. The antennal scape without a pecten; not forming an ‘eye cap’ (?). Ocelli present (prominent). Chaetosemata absent. Maxillary palps much reduced; 1 segmented (?). Labial palps drooping (short). Proboscis fully developed; not scaly.

Wingspan 8–10 mm. Forewings narrow; about 4.9–5.2 times as long as wide. Tornus undetectable. Forewings apically pointed; ground colour predominantly dark fuscous. Hindwings narrow-elongate and very long-fringed; linear-lanceolate to lanceolate; quite markedly narrower than the forewings to similar in breadth to the forewings; with a pointed apex. The fringe of the hindwings about 4 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 11–12 veined (vein 5 absent); with 1 anal vein to with 2 anal veins. The anal veins of the forewings representing 1b only, or comprising 1b and 1c (a weak 1c sometimes present). Forewings exhibiting a tubular vein 1c to lacking a tubular vein 1c (weak or absent). Vein 1b of the forewings furcate proximally. The transverse vein complete to incomplete. Discal cell of the forewings without a tubular media (M) vein. Hindwings with well developed neuration to with greatly reduced neuration; 6 veined, or 7 veined; with 1 anal vein, or lacking anal veins. The anal veins of the hindwings uninterpretable. Hindwings seemingly lacking a tubular vein 1c; without a discal cell. The transverse vein lacking. Vein 8 of the hindwings not approximating to vein 7. Hindwings lacking vein 3.

Fore-legs with a tibial epiphysis (?). Tibiae of middle legs 2-spurred. Posterior tibiae 4-spurred; hairy (with long hair-scales).

Eggs, larvae and pupae. Larval prolegs 10. Larvae concealed feeders; leaf-mining (not in Britain), or not leaf-mining; wood- or stem- boring (the British species in stems of Echium). Associated with Boraginaceae.

Pupae concealed; above the ground; in stems.

British representation. Genera 1; 1 species (Tinagmna ocnerostomella).

Classification. Microlepidoptera. Suborder Ditrysia. Superfamily Tineoidea.

Illustrations. • Tinagma ocnerostomella. • Douglasia ocnerostomella, neuration.

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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.’.