Xanthocorpus bisexuale (Dognin, 1912)

Dognin, P. (1912). Hétérocères nouveaux de l'Amérique du Sud, fasc. 5: p. 6.
(Described as Mesothen bisexualis.) Translated from the French original.

Mesothen bisexualis, sp. nov.

21 and 22 mm. -- Palpi black; frons bright white; vertex of head and antennae
black; prothorax black; collar, patagia, meso- and metathorax yellow; abdomen
and venter yellow, the last three segments and the anal tuft black; legs
yellow, blackening at the joints and extremities. ♂ with the wings hyaline,
with black margins and veins; the fore wings yellowing at the extreme base on
the inner side, the border very wide at the apex and swollen on 2. ♀ with the
wings hyaline; the fore wings with the costa over its first two thirds, the
inner margin up to near its extremity, the subcostal, the median, the greater
part of the submedian and of vein 2 yellow; the discocellular, the rest of the
veins and the terminal border black, the latter swollen at the apex as in the
♂; hind wings with the veins and the terminal border black, but with a fine
yellow subcostal and sub-inner-marginal edging.

Medina, eastern Colombia; 500 metres; three ♂♂ and one ♀ (Fassl).

Hampson, G. F. (1914). Catalogue of the Lepidoptera Phalaenae in the British
Museum, Supplement vol. 1: p. 140, pl. VII fig. 12. (As Mesothen bisexualis.)

*440 d. Mesothen bisexualis.

Mesothen bisexualis, Dogn. Hét. Nouv. Am. Sud, v. p. 6 (1912).

♂. Head black; frons white; thorax yellow, the tips of tegulae and a patch on
prothorax black; legs black except towards base; abdomen yellow, the two
terminal segments black with dorsal grey-blue bands. Fore wing hyaline, the
veins and margins black; some yellow at base; the black on termen expanding
widely on apical area and slightly below vein 2. Hind wing hyaline, the veins
and margins black; some yellow at base; the black on termen expanding slightly
towards apex.

♀. Fore wing with yellow streak below costa to beyond middle, the median
nervure and base of vein 2 yellow, the inner margin yellow from middle to near
tornus.

Hab. Colombia, Medina (Fassl), type † ♂ ♀ in Coll. Dognin. Exp. 26 millim.

Draudt, M. (1915). Mesothen. In: Seitz, A. (ed.), The Macrolepidoptera of the
World, vol. 6, The American Bombyces and Sphinges: p. 65; figured pl. 27 h
(plate reference added in the Additions and Corrections, p. 200). (As
Mesothen bisexualis.)

M. bisexualis Dogn. Head black with a white forehead; thorax and abdomen are
yellow, the 3 last rings and the prothorax black. The hyaline wings in the ♂
exhibit black veins and margins, apical spot and inner-angular spot; only the
extremest base of the proximal margin is yellow. In the ♀ the whole inner-
margin, two thirds of the costa, the subcostal and median, as well as the
greatest part of the submedian and of the lower median vein are yellow.
Expanse of wings: 21 to 22 mm. East Colombia.