ACOSMERYX; RETHERA; GURELCA; 8PH1NG0NAEPI0PSIS. By Dr. K. Jordan. 251 



;{(). Genus: Aeosinorj'x Bdv. 



Antennae slender, setiform, gradually pointed, with a very long, thin end-segment clothed with rough 

 scaling. Palpi large, roiuided. Eye without lashes. Inner spurs of tibiae double the length of the outer ones. 

 Mid tarsus with a basal comb composed of very long bristles. Apex of forewing always sinuate. Valve of ^ 

 with several rows of large scales on the outer surface. — Larva ta})ering anteriorly, with small head and pointed 

 horn curved downward; from head to horn a pale lateral line, which is less distinct on the anterior segments. 

 Pupa with 2 frontal tubercles, the tongue-case somewhat enlarged. — Distributed from India to Australia, 

 and northward through China to Japan. 7 species. 



A. naga Moore (= metanaga Bull.) (.39 c). Easily recognised by the large grey subapical area of the naga. 

 forewing being posteriorly sharply bounded by a band which runs from the costa to the centre of the distal margin. 

 — Distributed from the northern island of Japan to North India, but not yet known from Amurland .^811^ 

 China. As the Japanese specimens do not differ from Indian ones, we may conclude that the species occurs 

 also in the interjacent countries. The motli has been found in Japan in July. 



A. castanea R. d- J. (39 e). Chestnut-brown; the underside of the abdomen rust colour. Markings caskmca. 

 less distinct than in n<tga\ discal band of forewing widened on the outer side before the middle, its proximal 

 edge rather strongly cvirved. Hindwing less grey than in the nearest allied species. On the underside the disc 

 of both wings reddish brown. — Known from Japan and Central China; June, August. 



31. Genus: Retliera R. & J.*) 



Eyes with moderate lashes. Antennae clubshaped, abruptly tapering to form a short hook, end-seg- 

 ment short, not long and filiform. Spur of fore tibia extending beyond the tip of the tibia; the long apical 

 spur of the hind tibia less than half as long as the first tarsal segments, which is about as long as the tibia. Pul- 

 villus and paronychium absent. Wings entire; subcostal and radial 1 of hindwing on a stalk. Friction-scales 

 of valve of 3' truncate and rather small. — Early stages not known. — 1 species. 



R. komarovi Christ. (= stipularis Sunnh.) (39 b). Differs from all the Palearctic Sphingidae in the komarovi. 

 light transverse band of the green forewing, and in the hindwing being yellow with a black submarginal line. 

 Under surface a beautiful pale rosy red. — Known from Asia Minor to Afghanistan and Transcaspia; May 

 to July; rare. 



32. Genus: Ciurelca Kirby. 



Head with two tufts which are united behind. Antennae short, filiform, not clubbed, strongly pris- 

 matical in (J, cylindrical in $; end-segment short. Palpi porrect, terminal surface triangular; the basal spot 

 not developed; the scales at the apex of segment 1 erect in fan-shape. Eyes covered above by long pendant 

 lashes. The spines of the abdomen long, weakly chitinised ; fan-tail triangular in (J, truncate in $. All the tibiae 

 spinose; spurs of mid tibia of nearly eciual length. Distal margin of forewing irregularly dentate; costal margin 

 of hindwing incurved, the costal vein in consequence curved down to near the subcostal. Valve of ^ without 

 enlarged scales. — Larva anteriorly tapering, with a longitudinal Hne and oblique stripes. Tongue-case of pupa 

 cariniform. — 2 species, which both enter our territory in the Pacific districts. The moths occur from the 

 spring to the autumn. 



G. hyas Walk. (= geometricum Moore, macroglossoides Walk.) (40 g). The distal marginal band of inja.'^. 

 the hindwing is of even width throughout. Harpe of o spatulate, curved upwards; apical process of penis 

 directed obliquely distad. — Indo-Malayan, reaches in North-West India the Palearctic boundary and is also 

 known from Southern C'hina and Forniosa, presumably occurring at least as far as the Yang-tse-kiang valley. 



G. masuriensis. The distal marginal band of the hindwing is strongly narrowed backwards. Harpe 

 of 3 with a basal ]5rocess, but without apical one; apical process of penis long, curved frontad and lying flat 

 on the penis. From North-West India to Japan. — masuriensis Bufl. (= himachala Bull., erebina Bull). Distal Hia.su- 

 marginal band of hindwing broad. Forewing dark. From Southern Kashmir to Burma. — sangaica Bull. ^Jfj"^^-;„ 

 (40 g). Forewing paler, distal marginal band of hindwing more strongly narrowed posteriorly. .Japan, Corea, 

 China and Formosa. 



33. Genus: K|>liiii;;'4»iiae|>io|>*<)is Wallengr. **) 



Very closely related to Gurelca. Palpi rough, segment 1 with apical fan as in Gurelca. Antennae dentate 

 or pectinate in <J, simple and club-shaped in ?; end-segment short. Eye-lashes present. Head with high 

 tuft. Tibiae spinose; mid tarsus with basal comb. Distal margin of forewing dentate or lobate; radial 3 and 

 median 1 originating close together, as in Gurelca. Costal margin of hindwing almost straight; lower angle 



*) Synonym: Bor.shoiiiia Ai<si. (1905). **) Synonym: Pterodunta Aust. (1905). 



