FAMILY SCOLYTIDAE 543 



Beetle. — Minute, lirown. Head concealed by prothorax. 



Latter very convex on disk, sloping forward anteriorly and 



I pi^teriorly ; finely punctate. Elytra 



' ;' f,;ii>V V Description. moderately convex on disk; uniformly 



'■^' '"•■ I -^;;\ '" striate- punctate ; the apex leaves a 



i '^f \ small portion of last abdominal segment exposed; alxlomen 



"•c^"' 2 inflexcd posteriorly. Length, 3 mm. 



Larva -Small, elongate, white, with a brownish head. 



,.~^.-,^ ,sw. . Thickest anteriorly just behind the head, the abdominal segments 



j^'- V \ of much less width ; spiracles prominent laterally. Length, 3 mm. 



'^ ^ This sinall scolytid only attacks the ^reen 



•' , - - ,, '. ■ i 2b shoots of the manero, the es^ffs 



'/' - ^' -^"^ -H Life History. 1 -^ • ^u i t 1 f f u 



being laid in the bast layer of the 



af^r^''^ twig. The insect's presence can readily be detected 



jt.rifjmshl\ ^, ^^ owing to the fact that black patches appear on the 



• green cortex. Above these patches the leaves on 



„ ^ ^'^ ^ , , ; the twig will be seen to be turning yellow, and they 

 Fig. 349. — Crvpha/i/s ^ , . ^ -^ ■' 



mangiferae, Steb". 2, za, die and drop off. Beetles just mature and a few 

 beetle ; 2/', 26, antenna and larvae were found in the twigs on II May 1902, 

 "'"'''" ■ ■ the beetles being probably the first generation of 



the year. It is probable that there are one or two more life-cycles during 

 the }-ear. The insect proved new to the British and Indian Museum 

 collections. It was taken with Dinodcrns distinctus (see p. 129). 



Tribe TOMICINAE (IPINAE). 



Differs from Crypturi^^inac and Cryphalinae in having the elytral decli\'ity 

 truncate and armed. 



The tribe includes the important genus Touiicns (Ips), containing some 

 serious Himalayan coniferous pests. Also the genera Coccotrypes, Dryocoetes, 

 PityopJitliorus, and Pityogenes. 



Coccotrypes. 

 Coccotrypes integer, Eichhoff. 



Referexces. — Eichhoff, Ratio Tomic. 311 (1879) ; Stebbing {Xyleboi'us), Assam Sal Ins. Pes. Ind. 



For. Bull. no. 10, p. 62 (1907). 



Habitat. — Ceylon ; Assam. 



Trees Attacked. — Ebony {Diospyros cbenum) : E. E. Green ; Sal {Shorea 

 robiista) : Goalpara, Assam. 



Beetle. — Oval, convex. Prothorax black, elytra 

 red-brown. Head punctate. Prothorax longer than 



broad, semi-elliptical, base I 

 Description. truncate, anterior margin 



rounded, surface punctate, 

 moderately shining, with rather line asperations 

 here and there. Elytra slightly wider than pro- 

 thorax at base, from quarter to one-fifth longer ; Flo. 350. 

 base straight, sides slightly constricting to apex, Coccotrypes i/ilci^er, Eich. Infests 

 which is rounded ; disk rather flat, sides rounded sal-seed in Assam. 



