476 FAMILY SCOLYTIDAE 



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



in this way as the Platypus biforinis described on p. 6ig. 

 Damage Committed ^^ ^^^ ^^^^^ ^^^^ ^^,^^^ ^^^ .^^^^^^ j^ numerous it is 

 in the Forest. , i /• i • 



capable of destroymg a certam amount of the cambium 



laver 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 Pinns loiv^ifolia in Kumaun.* 



Sl'HAEROTKYPKS. 



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, Sielthing. 



Hefeke.vces. — Stebbing, £)i'/)i);^ Notes, \, 389 (1906) : id. /;;</. For. Mem. Zool. Ser. i, pt. i, p. 3 (1908). 



Habitat, — United Provinces. 



Trees Attacked. — Sal [Shorca vobnsia) ; Anogcissus laiif(jlia ; Tcnniiialia 

 tomentosa. Siwaliks, United Provinces Terai, Oudh. 



Beetle. -Klongatc, globular, very convex above. Black, with 

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

 Head l)lack, punctate ; antennae yellow ; 

 Description. prothorax with anterior margin half the 



widili of the posterior, the margin produced 

 forward into a lol^e in the middle, with a transverse depression 

 below it ; sides rounded, posterior margin produced backward 

 ^^■jl^^ medianly into a sharp point, a fine raised longitudinal black line 



J^^^^^Kj^ii^ down centre, the, rest of surface being covered with slightly ra'sed 



.^^P^^P^^J^ irregular elevations. 1-dytra longitudinally striate with the intervals 



^31 consisting of rows of prominent rounded serrate elevations, like 



J.-J,; ^, . l)lunt teeth ; the elytra taper slightly towards apex, the basal margin 



,.,, , . beiuL' auLjularlv convex and serrate; the basal fifth is often red in 



.Sp/iacrolrvpi's , , ' , , , , • , , 



v/7c'<i///v7/v/v .S'teb X 6 colour and nnich 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 lins 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, w ith a small brownish-yellow head ; very convex dorsally, flat 



«*^l\.njA.!iU-'-'' ventrallv, and elliptical in section. 



^'"■- 315- Pupa.— Almost spherical in shape, white, has the appearance of 



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

 .'iiwalikensi.^. Steb. x 6. against the sides and breast. 





Journ. Bom. Nat. Hist. Soc. vi 1. xviii, p. 19 (1907). 



