CEPHONODES. 247 



a little cloud when the wings are rapidly vibrated before the 

 first flight. The moths are rather slow in taking to the wing, 

 but when they do so the flight is very rapid. They make 

 a deep humming note, as do Macroglossum moths, when slightly 

 alarmed. They are very active in the morning and evening, 

 and dart rapidly from flower to flower, and oviposit on the 

 wing. They are not attracted by light. Bred $$ do not 

 readily attract wild <£<£, but the sexes pair freely in captivity. 

 Hob. Aethiopian and Oriental Regions, northwards to 

 Japan. Two Indian species and subspecies. 



Key to the Species. 



Imagines. [p. 247. 



Pore tibia without an apical thorn C.h. hylas (Linn.), 



Fore tibia ending in a prominent thorn .... C. picus (Cram.), 



[p. 250. 

 Larvae. 



Spiracles white, with a broad, transverse, [p. 248. 



orange, medial band C.h. hylas (Linn.), 



Spiracles white, immaculate G. picus (Cram.), p. 251. 



The pupae are so similar that we are unable to give a key. 



72. Cephonodes hylas hylas (Linn.). (Fig. 64 A, $, B, C, 



genitalia ; PL III, figs. 8, 9, larva). 



Sphinx hylas, Linnaeus, 1771, p. 539 (China). 



Cephonodes hylas, Moore, 1882, p. 31, pi. xciii, figs. 4, 4 a, b (1., p., 

 i.) ; Swinhoe, 1885 A, p. 257 (Poona ; Satara ; Belgaum 

 Bombay) ; Warren, 1888, p. 294 (Campbellpore ; Abdol) 

 Hampson, 1892, p. 120, fig. 69 (<?) ; Jordan, 1911, p. 249, t. 40 d 

 Seitz, 1928, p. 544. 



Hemaris hylas, Moore, 1884, p. 234 (Cachar) ; Swinhoe, 1890, 

 p. 162 (Moulmein). 



Cephnodes (!) hylas, Dudgeon, 1898, p. 419 (Sikkim ; Bhutan). 



Cephonodes hylas hylas, Roths. & Jord., 1903, p. 468 ; Mell, 1922, 

 p. 195, pi. vi, figs. 29-33, pi. xxvii, fig. 9 (larva), pi. xiii, figs. 18- 

 20, pi. xvii, figs. 34, 35 (pupa), pi. xxvii, figs. 10, 11 (?) ; Scott, 

 1931, pi. ii, fig. 3 (larva). 



Imago. — $$. Upperside : head, thorax and abdomen yellow- 

 ish ; abdomen with a black and a deep red band, sixth tergite 

 with a black mesial patch, which often bears some red scales. 

 Underside of palpus, breast, mesial patches of first abdominal 

 sternites, side-patches of posterior sternites white, breast 

 often slightly yellowish ; tail black, rest of abdomen brownish- 

 red. Fore tibia without apical thorn, but with some short 

 spines. Individually variable in colour and size. Expanse : 

 JO60-73mm. 



$. Ninth and tenth segments asymmetrical ; tenth tergite 

 twisted (fig. 64 B), apex pointing towards the right side, right 

 half alone developed, forming an obtusely pointed hook ; left 



