344 SPHINGID.E. 



sculpta, its ventral margin, which is bent upwards, serrate. 

 Penis-sheath (fig. 89 B) ending in a long, pointed, curved 

 process. 



" $. Vaginal plate narrowed at end ; orifice covered by 

 a prominent proximal ridge, which is sinuate in middle " 

 (Roths. & Jord., 1903, p. 601). 



Hab. E. Himalayas and S. China. One species, R. triopus. 

 For the early stages see under that species. 



116. Rhodosoma triopus (Westw.). (Fig. 89 A, imago). 



Macroglossa triopus, Westwood, 1848, p. 14, pi. vi, fig. 4 (Assam,. 



Rhodosoma triopus, Hampson, 1892, p. 122, fig. 71 (<2) ; Dudgeon, 

 1898, p. 419 (Sikkim ; Bhutan) ; Roths. & Jord., 1903, p. 601 ; 

 Mell, 1922, p. 250, pi. viii, figs. 5, 6, pi. xiii, fig. 39, pi. xviii, 

 fig. 22 (pupa), pi. xxx, fig. 8 (larva) ; Seitz, 1929, p. 556, t. 64 e. 



Imago. — $0.. Bee-shaped, and of peculiar appearance. 

 Head and thorax olive -green or fulvous, with two creamy - 

 white stripes on metanotum ; abdomen black, with crimson 

 lateral bands on segments 2 to 5, that on 4 the largest, fulvous 

 dorsal and lateral spots on 5 to 8 ; short lateral tufts ochraceous- 

 yellow, anal tufts black. Fore wing brownish-black crossed 

 by three antemedian, outwardly oblique black bands ; a large, 

 white, semivitreous, quadrate spot beyond the discocellulars ; 

 postmedian, submarginal and marginal black bands. Hind 

 wing black, with a large white patch on costa before apex ; 

 some fulvous postmedian specks on the veins ; anal angle 

 with a crimson and white patch. Underside of thorax fulvous ; 

 abdomen red, with four pairs of black spots ; fore wing suffused 

 with reddish-brown ; hind wing red, with median and post- 

 median black lines. Expanse : 64-78 mm. 



Hab. E. Himalayas (Sikkim ; Bhutan ; Assam) and 

 S. China, where Mell has bred the species. Larvse were found 

 in deep, shady ravines. 



Egg. — Broadly ovoid ; surface smooth and shining ; colour 

 pale grass -green ; size larger than those of Macroglossum 

 and Cephonodes. 



Larva : — 



Final instar. Head round, surface smooth. Body tapering 

 sharply frontad from segment 5 ; horn long, stout, laterally 

 compressed, ending in a sharp point, basal half gently up- 

 curved, distal half gently down- curved. Surface of body dull 

 and smooth except for four small tubercles on the front half 

 of each of segments 6 to 11, on the dorso-lateral stripe, those 

 on 7 and 8 larger than the rest ; horn with tubercles on dorsal 

 and ventral surface. 



Coloration. — Head green, with a white stripe separating 

 face from cheek. Body pale green, the divisions between 



