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Euselasia
''Euselasia'' is a genus in the butterfly family Riodinidae present only in the Neotropical ecozone.
==Description==
The wing veins are inconstant.Some species have 2, others 3, and one species (''E. aurantiaca'') even 4 subcostal branches. The genus is recognizable by the anterior radial vein either running directly in the elongation of the subcostal, or being connected with it by a very short anterior discocellular.
The butterflies often have the appearance of small Satyrids or ''Thecla'' species ; as for instance ''Eus. eutychus'' resembles (particularly beneath) exactly ''Euptychia helle'' flying in the same locality, or ''Thecla themathea'' ; or ''Eus. clithra'' resembles ''Euptychia chloris'' and so on. On the upper surface there is often a very bright reflection of a shining power otherwise not found in any lepidopteron and of a truly wonderful iridescence.
The larvae are somewhat of the shape of a wood-louse, very brightly coloured, behind the head there are two points.The pupae are covered with fine, fluffy hairs like the larvae, green, held by a belt. The imagines are partly extraordinarily rare and belong to the few Riodinidae that fly to a considerable height. They also clap their wings together when being at rest like other day-butterflies, unlike most of the other Riodinidae which spread them out like the Geometridae.〔Seitz, A., 1916. Family:Erycinidae. In A. Seitz (editor), Macrolepidoptera of the world,vol. 5: 617–738. Stuttgart: Alfred Kernen〕
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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