54 SPHINGIDiE. 



of spurs of mid- and hind tibiae) woolly ; scales of the upper 

 layer of the fore wing multidentate, the teeth long and thin, 

 especially on the under surface ; the scales of the hind wing 

 longer, narrower, partly hair-like, the broader ones deeply 

 slit or long-toothed. 



" <£. Tenth abdominal tergite long, slender, pointed, the 

 same in the three species of the genus ; harpe with two 

 processes or teeth ; clasper sole-shaped, with a patch of large 

 multidentate friction-scales. Penis-sheath long and thin, 

 without armature. 



" Q. Aperture of vagina with an elliptical rim ; eighth 

 tergite shallowly sinuate " (Roths. & Jord., 1903, p. 16). 



Egg. — Nearly spherical, surface smooth and shining,, 

 colour green. Length 2 mm. 



Larva. — May be distinguished from all other sphingid 

 larvae in India, except Rhodosoma triopus, by the horn being 

 curved first down and then up ; three colour-forms, green , 

 grey and yellow. 



Pupa. — Tongue reaches to near tip of wing-case, with trans- 

 verse file-like ridges at base ; fore leg one-third, mid-leg 

 two-thirds length of wing-case ; a long, narrow coxal piece ;. 

 surface smooth and shining ; sculpturing on segment 4 and 

 antespiracular ridges present. Colour chestnut. 



Habits. — Eggs laid singly on food-plants belonging to several 

 families. The larvae when alarmed make a clicking noise 

 with the mandibles, and the moths when molested a squeaking' 

 note which is produced by air being forced through the 

 tongue. The moths enter beehives to steal the honey, and 

 are the only Indian Hawk-Moths which are known to feed 

 otherwise than on the wing. 



Hab. The Old World, except the Papuan Subregion. Two> 

 Indian species and subspecies. 



Key to the Species. 



Imagines. 



Hind wing upperside with the basal third [p. 55, 



marked with black A. lacliesis (Fabr.), 



Hind wing with the basal third immaculate . . A. s. styx Westw., 



[p. 58. 

 Larvse. 



Distal half of horn much curved upwards, 



sometimes forming a rmg ; horn covered 



with large tubercles ; dotting on dorsum 



of body smaller, sparser than ins. styx, and 



hardly reaching the front margins of the [p. 56. 



segments ; spiracles black A. lacliesis (Fabr.), 



Distal half of horn Jess strongly curved upwards, 



never forming a ring ; horn covered with 



small tubercles ; dotting on dorsum of 



body bolder and reaching the front margins [p. 59. 



of segments ; spiracles whitish A . s. styx Westw., 



