Cosmosoma dorsicincta Dognin, 1912

Dognin, P. (1912). Hétérocères nouveaux de l'Amérique du Sud, fasc. 5: p. 6.
Translated from the French original. (The ♂ described here was later
separated by Dognin as C. stictinota, see below.)

Cosmosoma dorsicincta, sp. nov.

♀ 29 mm. -- Palpi, head and antennae black; collar yellow; patagia yellow with
a black terminal tuft; mesothorax black; pro- and metathorax yellow; abdomen
yellow with a dorsal series of black bands and, on each side, a subdorsal
series of black points; the last three segments ringed ventrally with black;
legs black, the coxae and femora black. Wings hyaline with black margins and
veins. Fore wings with a few yellow hairs at the base, the border very wide at
the apex and swollen on 2; hind wings with the border wide at the apex.

♂ 25 mm. -- Of a frankly orange-yellow tone; the patagia marked with a black
point on the edge at the level of the wing; the prothorax blackening a little;
the subdorsal series reduced to three points on the fourth, fifth and sixth
segments, but the last two segments and the anal tuft black; the venter of a
less orange yellow; the legs with a little more yellow; the wings as in the ♀,
but with a little more yellow at the base and on the costa.

Medina, eastern Colombia; 500 metres; one pair (Fassl).

Dognin, P. (1914). Hétérocères nouveaux de l'Amérique du Sud, fasc. 7: p. 5
(under Cosmosoma stictinota). Translated from the French original.

In fascicule V of the Hétérocères nouveaux de l'Amérique du Sud I described,
in June 1912, a Cosmosoma dorsicincta ♀ to which I believed I could pair a ♂
despite certain differences which my description pointed out. Since then I
have received a Cosmosoma dorsicincta ♂ absolutely typical and conforming to
the ♀, the only differences being that only the penultimate segment is ringed
ventrally with black and the anal tuft is black.

I shall correct in passing an error which slipped into my description of
Cosmosoma dorsicincta ♀, where I state "legs black, the coxae and femora
black"; it should read "legs black, the coxae and femora yellow".

As for the ♂ paired by mistake with dorsicincta ♀, I propose to name it
stictinota.

Hampson, G. F. (1914). Catalogue of the Lepidoptera Phalaenae in the British
Museum, Supplement vol. 1: p. 169, pl. IX fig. 1.

*542 c. Cosmosoma dorsicincta.

Cosmosoma dorsicincta, Dogn. Hét. Nouv. Am. Sud, v. p. 6 (1912).

♀. Head black-brown; thorax yellow with a brown patch at middle of dorsum; the
patagia edged with black towards tips; legs brown; abdomen orange-yellow with
dorsal black spots on two basal segments followed by dorsal bands on the other
segments, lateral series of small spots, the ventral surface with narrow black
bands on three terminal segments. Fore wing hyaline, the veins and margins
black, the terminal band expanding widely on apical area and below vein 2.
Hind wing hyaline, the veins and margins black, the black on termen expanding
towards apex.

Hab. Colombia, Medina (Fassl), type † ♀ in Coll. Dognin. Exp. 32 millim.

Draudt, M. (1915). Cosmosoma. In: Seitz, A. (ed.), The Macrolepidoptera of the
World, vol. 6, The American Bombyces and Sphinges: p. 81; figured pl. 27 m
(plate reference added in the Additions and Corrections, p. 201). (As
Cosmosoma dorsicinctum.)

C. dorsicinctum Dogn. Palpi, head and antennae black; collar yellow, shoulder-
covers yellow, at the apex black. Thorax yellow, in the middle black. Abdomen
yellow, with dorsal black bands and subdorsal black spots. In the ♂ the yellow
colour is of a deeper orange, the prothorax blackened, the subdorsal black
abdominal spots reduced, the 2 last rings quite black. Wings hyaline with
black veins, margins and large apical spots, at the costal base yellow.
Expanse of wings: 25 to 29 mm. East Colombia.