476 FAMILY SCOLYTIDAE 



This beetle is a wood-borer, though by no means so dangerous a pest 



in this way as the Platypus biformis described on p. 619. 



Damage Committed Qn the Qther hand when thg insect j g numerous it is 

 in the Forest. 



capable ol destroying a certain amount ol the cambium 



Inyer of the tree, owing to the habit of the females of carrying their galleries 

 at first in the cambium layer and sapwood. 



As regards protection, the method of treatment would be similar to that 

 for the Platypus (p. 620). 



This may be one of the insects alluded to by Mr. Norman Troup as 

 infesting the wood of the Pi mis longifolia in Kumaun.* 



SPHAEROTRYPES. 



A very important genus of globular bark beetles, which chiefly infest 

 broad-leaved trees in the plains forest. It is interesting to note that the 

 genus is widely spread, extending throughout India (including Baluchistan) 

 and into Lower Burma. 



Sphaerotrypes siwalikensis, Stebbing. 



REFERENCES. Stebbing, Depart. Notes, i, 389 (1906) ; id. Ind. For. Mem. Zoo}. Ser. i, pt. i, p. 3 (1908). 



Habitat, United Provinces. 



Trees Attacked. Sal (Shorea robustii) ; Anogeissus latifolia ; Tcnninalia 

 toinentosa. Siwaliks, United Provinces Terai, Oudh. 



Beetle. Elongate, globular, very convex above. Black, with 

 often a reddish tinge on the thorax and basal portion of elytra- 

 Head black, punctate ; antennae yellow ; 

 Description. prothorax with anterior margin half the 



width of the posterior, the margin produced 



forward into a lobe in the middle, with a transverse depression 

 below it ; sides rounded, posterior margin produced backward 

 medianly into a sharp point, a fine raised longitudinal black line 

 down centre, the rest of surface being covered with slightly raised 

 irregular elevations. Elytra longitudinally striate with the intervals 

 consisting of rows of prominent rounded serrate elevations, like 

 Y\c,. -MI. blunt teeth ; the elytra taper slightly towards apex, the basal margin 



Sfiharr<>l> T/VV being angularly convex and serrate; the basal fifth is often red in 



ti^'tilikfitsis Steb. * 6. c l ur an d much less deeply striate, and the elevations are less 

 Siwaliks, Northern India, prominent than on the rest of surface. Under-surface black, the 



abdominal segments thickly clothed with longish yellow hair. Legs 



brown, tibiae serrate on edge, tarsi lighter-coloured, Length, |in. to ^in. The black 

 elevate line down prothorax, and the remarkably deeply striate and corrugate elytra, serve to 



distinguish this insect. 



Larva. White, curved, legless, thick, robust, and much corru- 

 gated, with a small brownish-yellow head ; very convex dorsally, flat 

 ventrally, and elliptical in section. 



Pupa. Almost spherical in shape, white, has the appearance of 



Larva of Sphaerotrypes beetle, but is soft, and legs and antennae and wings are compressed 

 v\, Steb. x 6. against the sides and breast. 



* Jonrn. Bom. Nat. Hist. SOL. vi 1. xviii, p. 19 (1907). 



