ASTHENIDIA. By Dr. M. Draudt. 
1. Genus: Astlicnidia Westw. 
815 
About 1 dozen of white or yellowish forms similar to Geometridae or Uranidae, with short-tailed 
hindwings, all of which are very similar. The genus is particularly characterized by vein 10 of the forewing 
only arising shortly before the apex from 8, and the hindwing being tailed between veins 4 and 5. Proboscis 
relatively feebly developed, the last palpal joint short. Cell of forewing very short. The larva resembles a 
small green Sphingid larva, its 3rd segment is not so strongly expanded anteriorly and beneath. 
Type: podaliriaria Westw. 
A. podaliriaria Westw. (121 a) differs from all the other species of this genus in the greyish-black apex podali- 
of the forewing. Apparently only known hitherto from Brazil (Rio de Janeiro), but probably with a wider Tl 
range. The $ has not yet been described. 
A. amphira Drc. (121 a) is one of the largest species, the transverse lines distinctly leaden grey, not amphira. 
brownish as in all the others, the distal band of the hindwing broader than in the very similar, though smaller 
geo?netraria. Known from Colombia, Ecuador, Bolivia, and Peru. 
A. transversaria Drc. (121 a) is somewhat smaller than amphira, more chalky white, the transverse lines trans- 
with a reddish-brown tinge, the tail shorter and without the black vein 5 of amphira, the black spots therein versaria. 
very large. Jordan divided the collective species into 3 geographical forms which, however, are only to be 
separated by genital differences. In the nomenclatural form from Panama and probably West Colombia the 
upper appendage of the clasper is shortened with an apical projection, whilst in - salax Jord., from Nicaragua salax. 
and Costa Rica, the upper appendage of the clasper is longer, not divided, and only with traces of a projection, 
and in — Columbiana Jord. the same appendage is short and ends in 2 bent prongs, one of which bears a third columbiana. 
plain or forked appendage on its inside. The latter form is known from Muzo and Bogota. 
A. terminalis Jord. is exactly like transversaria, but the forewing shows a fine black marginal line inter- terminalis. 
rupted by the veins; the subterminal band of the hindwing, which is only indicated by grey in transversaria, 
is much more distinct and blacker, the yellow' spot in the tail is reduced and more reddish-brown, the tail 
parted by the fine brown radial vein. Genitally very different. Ecuador and Colombia. 
A. geometraria Fldr. (121a) is likewise very similar, the subterminal band of the hindwing broadly geometraria. 
brownish-grey, the postdiscal band of the forewing is interrupted above the inner margin, forming partly 
zigzag-shaped points on the hindwing, where the fringe is black from the tail to the anterior angle, the upper 
spot on the tail being spotted red-brown distally. Widely distributed: Guiana, Colombia, Ecuador, Amazons, 
Peru, and Bolivia. 
A. celata Jord. (= geometraria Drc. nec Fldr.) is externally exactly like geometraria, the transverse celala. 
bands are finer, the postdiscal one of the forewing scarcely interrupted, more regularly dentate on the hindwing, 
traces of a brown marginal line from the tail to the anal angle. The genitals are very different. Only known 
from the Amazons and Ecuador. 
A. paulina Jord. (121 a) was described after a bad specimen; as geometraria, with thin bands, the paulina. 
postdiscal one broadly interrupted on the forewing. Genital apparatus very different from all the others. 
South-Eastern Brazil (Sao Paulo); a $ from Sa. Catharina, in the Berlin Museum, shows a somewhat yellowish 
colour. 
A. diffissa Jord. (121 a). The postdiscal band of the forewing is not interrupted, the antemedian band ditfissa. 
of the hindwing deeply forked analwards, the postdiscal one very distinctly undulate-dentate analwards, the 
anteterminal band mostly more remote from the margin. In distinction from all the other forms known there 
is on the 8th sternit on each side a very long bent pointed appendage which varies geographically. In the 
nomenclatural form the apex of these appendages is bent downwards ventrally. It flies in Ecuador, the 
Amazons, and North Peru. — In fortis Jord., from East Peru, it is longer, and bent sidewards and upwards, fortis. 
in — inca Jord. like that of the nomenclatural form, but more bent; South-Eastern Peru, Cuzco. - In tridens inca. 
Jord. it is still more bent and slightly twirled. South-Eastern Peru (Yahuarmayo, Carabaya). tndens. 
A. stricturaria JIhn. (= machaonaria Guer., strigaria Film.) (121 b) is easily distinguished by the short stricturaria. 
cellular streak of the other species being prolonged into a band extending to the inner margin; the tu r o distal 
bands are nearer together, the subterminal line is absent, fringe black; the hindwing shows a fine third line 
between the two bands; the upper tail-spot is bordered with brown inside, not outside. Guiana, Amazons; in 
the Berlin Museum from Sao Paulo. 
A. spinicauda Jord. entirely resembles stricturaria, but on the 8th abdominal tergit there is on each side spinicauda. 
at the margin, which is plain in stricturaria, a sharply pointed appendage the apex of which terminates into a 
fine thorn. French Guiana, Amazons. 
