Insects of Britain and Ireland: butterflies

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L. Watson and M. J. Dallwitz

Riodinidae

Ericynidae, Lemoniidae, Libytheidae, Nemeobiidae.

Adults. Wingspan 29–34 mm; the fringes conspicuously light-and-dark banded. Medium built; short-bodied. The eyes white-rimmed; notched or emarginate at the bases of the antennae and contiguous with the bases of the antennal sockets; hairy. Antennae reaching about halfway to the wingtips; inserted markedly less than one half the width of the head apart. The antennal clubs abrupt; flattened. Labial palps porrect. The female having all 6 legs fully developed and operational for walking (and clawed), or having only 4 fully developed legs (in the male). Fore-legs of female operational for walking. Fore-legs without a tibial epiphysis. Tibiae of middle legs 2-spurred. Posterior tibiae without spurs.

Forewings. Forewings apically blunt. The outer and hind margins angled at 95–100 degrees. The outer margins convexly curved. Uppersides of the forewings light brown, or dark brown, or orange-brown, or fuscous (tawny or dusky, depending on which component is regarded as the ground colour); contrastingly dark-veined.

Hindwings. Hindwings broadly rounded; with the outer margins scalloped. Uppersides of the hindwings light brown, or dark brown, or orange-brown, or fuscous (tawny or dusky, depending on which component is regarded as the ground colour); conspicuously dark-veined; conspicuously patterned (with tawny chequering, like the forewings).

Undersides of wings. Undersides of the forewings not dark-veined, or conspicuously dark-veined to not dark-veined.

Undersides of the hindwings not dark-veined, or conspicuously dark-veined to not dark-veined; eye-spotted.

Wing venation. Forewings 12 veined. Forewings with 1 tubular anal vein; the anal veins of the forewings representing 1b only; vein 1b furcate proximally. Forewing veins 8 and 9 out of 7.

Hindwings 9 veined; with a praecostal spur; with 2 anal veins; exhibiting vein 1a; the anal veins comprising 1a and 1b. 7 veins arising from the hindwing cell. The cell-derived hindwing veins 3+4 proximally joined and 6+7 proximally joined.

Eggs, larvae, pupae. Eggs barrel-shaped; more or less smooth. The larvae woodlouse-shaped (lycaenid-like, but lacking the honey-gland common in that family); having no known association with ants; hairy (with hair tufts); exposed feeders. On Primula.

Pupae smooth and rounded (rounded); conspicuously patterned; without shining-metallic markings; exposed, with no coccoon; not suspended, but attached at the tail and secured by a median girdle of silk.

British representation. Genera 1; 1 species. Hamearis lucina (Duke of Burgundy Fritillary).

Distribution. Frequenting woodland. Habitats calcareous and non-calcareous.

Classification. Superfamily Papilionoidea.

Illustrations. • Hamearis lucina (Duke-of-Burgundy Fritillary: B. Ent. 316). • Hamearis lucina (legend+text: B. Ent. 316). • Hamearis lucina: B. Ent. 316, text cont.. • Hamearis lucina (Duke-of-Burgundy Fritillary): photos. • Larva and pupa of H. lucina: Duponchel (1849). • Hamearis lucina : egg, larva, pupa.


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. 2008 onwards. Insects of Britain and Ireland: butterflies. Version: 16th May 2016. delta-intkey.com’.

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