. Catalogue of the Lepidoptera Phalænæ in the British Museum. British Museum (Natural History). Dept. of Zoology; Moths; Lepidoptera. THALBSA. HALI81D0TA. 145. Genus THALESA. Type. Thalcaa, Schaus, Journ. N. York Eat. Soc. iv, p. 136 (189G) citrina. Proboscis fully developed ; palpi upturned, not reaching vertex of head ; antenntu of male bipectinate with moderate branches, of female with short branches; tibije with the spurs moderate; abdomen dorsally clothed with rough hair at base. Fore wing with vein 3 from well before angle of cell; 4, 5 from angle; 6 from upper angle ; 7, 8, 9 stalked ;
. Catalogue of the Lepidoptera Phalænæ in the British Museum. British Museum (Natural History). Dept. of Zoology; Moths; Lepidoptera. THALBSA. HALI81D0TA. 145. Genus THALESA. Type. Thalcaa, Schaus, Journ. N. York Eat. Soc. iv, p. 136 (189G) citrina. Proboscis fully developed ; palpi upturned, not reaching vertex of head ; antenntu of male bipectinate with moderate branches, of female with short branches; tibije with the spurs moderate; abdomen dorsally clothed with rough hair at base. Fore wing with vein 3 from well before angle of cell; 4, 5 from angle; 6 from upper angle ; 7, 8, 9 stalked ; 10, 11 from cell, male with the inner margin much lobed. Hind wing with the cell long; vein 2 from long before angle ; 3 and 5 from angle, 4 absent; 6, 7 from upper angle ; 8 rarely present as a short spur not reaching costa. 1472. Thalesa citrina. Phalcena citrina, Sepp, Ins. Surinam, pi. 53 (1848); Kirby, Cat. Het. p. 208. Charidea seruba, Aussereur. Schmett. f. 280 (1855); Druce, Biol. , Het. i. p. 93 (part.); Kirby, Cat. Het. p. 208. S. Yellow ; head and thorax slightl)'^ marked with brown ; legs with fuscous streaks ; abdomen whitish below. Fore wing with numerous irregularly-waved fine brown lines; the ante- medial line defined on outer side by a brownish patch from costa to median nervure; an oblique, almost straight, :dJ), medial line expanding at costa and with a silvery spot F{^. ^ citrina, S- 1- heyond it at lower angle of cell; a subterminal black point above vein 5 ; the lobe of inner margin dark brown. Hind wing yellowish white. $ with fine brown line on inner margin. If ah. Panama {Champion), 2 $ , Godman-Salvin Coll.; Amazons, Kio Purus (TraU), 1 d, Para (Bates), 1 $ . E^cp., c? 30, $ 4a millim. Larva. Reddish brown; head crimson with darker sutures ; the first two somites with long white forwardly directed hair arising from pale tubercles; the other somites with dorsal and lateral brushes of pinkish and brown hair; some late
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