148 SPHINGIDiE. 



lobe to base of antenna, separating the face from the cheek, 

 down each side of the dorsal line from vertex to apex of 

 clypeus and down each side of clypeus ; face covered with 

 large, irregularly shaped, flattened tubercles which touch each 

 other ; rest of head with large, rounded, scattered tubercles. 

 Body short and thick, nearly cylindrical ; horn a conical 

 tubercle 1 mm. long. Surface of body dull ; a transverse 

 row of rather widely spaced tubercles along each secondary 

 ring ; a subspiracular stripe of larger tubercles on segments 2 to 

 4, meeting the lower end of the oblique stripe on 5 ; oblique 

 stripes formed of large tubercles on 5 to 11, the last running 

 across 12 to base of horn and along sides of horn to its tip ; 

 large scattered tubercles on anal flap and claspers. 



Coloration. — Head green ; the stripe of large tubercles 

 separating face from cheek, and down the dorsal line, yellow : 

 tubercles on rest of face steel-blue ; those on rest of head 

 yellow ; labrum, ligula and mandible reddish-brown. Body 

 green ; the transverse rows of tubercles white, those forming 

 the subspiracular stripe on 2 to 4, the oblique stripes and those 

 on anal flap and claspers yellow. Horn green, the stripe of 

 tubercles yellow. Legs reddish-brown, prolegs and claspers 

 green. Spiracles narrow ovals, whitish, with a broad rust- 

 brown band across the middle. Length 100 mm. ; breadth 

 16 mm. ; head 12-5 mm. high by 10 mm. broad by 5 mm. deep ; 

 horn 1 mm. 



Pupa. — Very like that of C. bilineata, but can be distinguished 

 from it by segments 4 to 7 having a single row of deep pits 

 along the front margin, and by having the abdomen shagreened. 

 Cremaster larger than in bilineata,, bent slightly upwards, the 

 under surface flat and finely longitudinally channelled. 

 Colour a fine chestnut. 



Habits. — Food-plant : Lespedeza Thompsoni Benth., family 

 Leguminosae. The larva is very sluggish, and the growth slow. 

 When molested it turns the face to the aggressor, the true legs 

 bunched together under the mandibles. The larva does not 

 pupate soon after burying itself in the earth, but remains 

 in the larval state for several months (in one case for at 

 least eighteen months). If uncovered it is found lying in 

 a torpid condition, the head bent round to touch the body 

 at about segment 8 or 9 ; it then slowly straightens itself and 

 digs into the earth again. It remains in this state during the 

 winter and then pupates, or, if allowed to get too dry, slowly 

 shrivels and dies. . The moth emerges in a fortnight or three 

 weeks after pupation finally takes place. It is sluggish 

 during the day, but can fly swiftly. Eggs and larvae may be 

 found in June and July in the Khasi Hills. There is only 

 one brood in the year, the larvae hibernating. 



