Sarosa xanthobasis Druce, 1898

Druce, H. (1898). Descriptions of some new species of Syntomidae, chiefly
in the Oxford Museum. Annals and Magazine of Natural History (7) 1:
401-407; p. 403. Original description.

Sarosa xanthobasis, sp. n.

Female. Primaries and secondaries hyaline; the veins, costal margin,
outer and inner margins edged with black, the apex broadly black:
secondaries edged with black. The head, antennae, and palpi black, the
front of the head and the collar metallic blue; the thorax, tegulae,
abdomen, and hind legs bright chrome-yellow, the first and second pair of
legs brownish black; the anal segments of the abdomen bluish black.

Expanse 2 3/10 inches.

Hab. Ecuador (in the Hope Collection, Mus. Oxford).

Hampson, G. F. (1898). Catalogue of the Lepidoptera Phalaenae in the
British Museum, vol. 1, Syntomidae: p. 186, pl. 7, fig. 13.

*379. Sarosa xanthobasis. (Plate VII. fig. 13.)

Sarosa xanthobasis, Druce, A. M. N. H. (7) i. p. 403 (1898).

Female. Head black; frons and vertex brilliant blue; thorax and abdomen
orange; tegulae black with blue patches; fore and mid tibiae and tarsi
and extremity of mid femora black; abdomen with dorsal black spot on 3rd
segment, the 4th segment with triangular dorsal patch, the terminal
segments black with metallic blue on dorsum; wings hyaline, the veins,
and margins broadly, black. Fore wing with the basal area black, an
orange patch at base; a discoidal black lunule conjoined to costal
fascia; the terminal band expanding very widely on apical area and
slightly at tornus. Hind wing with the terminal band expanding towards
apex; the inner area black.

Hab. Ecuador, 1 female type in Mus. Oxon. Exp. 58 millim.

Draudt, M. (1915). Syntomidae. In: Seitz, A. (ed.), The Macrolepidoptera
of the World, vol. 6, The American Bombyces and Sphinges: p. 53,
pl. 11 f.

S. xanthobasis Druce (11 f). This beautiful, large species has an
orange-yellow thorax and abdomen. Head and collar black with metallic
blue spots. The 3rd abdominal ring exhibits above a small, black spot
which may also be absent, the 4th a triangular, small, black spot
adjoining the last, black, metallic blue reflecting segments. Wings
hyaline with black veins and margins, the base of the forewing is orange.
Hitherto known only from Ecuador.