FAMILY SCOLYTIDAE 



543 



' 



, x / Beetle. Minute, brown. Head concealed by prothorax. 



>j Latter very convex on disk, sloping forward anteriorly and 



posteriorly ; finely punctate. Elytra 

 Description. moderately convex on disk ; uniformly 



striate - punctate ; the apex leaves a 



small portion of last abdominal segment exposed ; abdomen 

 inflexed posteriorly. Length, 3 mm. 



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

 Thickest anteriorly just behind the head, the abdominal segments 

 of much less width ; spiracles prominent laterally. Length, 3 mm. 



This small scolytid only attacks the green 

 shoots of the mango, the eggs 

 being laid in the bast layer of the 



twig. The insect's presence can readily be detected 

 owing to the fact that black patches appear on the 

 green cortex. Above these patches the leaves on 



r ,, , the twig will be seen to be turning yellow, and they 

 FIG. 349- -- Cryphalus ^_ 



Life History. 



mangiferae, Steb. 2, 2 



die and drop off. Beetles just mature and a few 



beetle ; 2(5, 2<r, antenna and larvae were found in the twigs on n Mav 1902, 

 leg; id. larva. Siwaliks. ,, , ,, u . , ,, ~ f 



the beetles being probably the first generation of 



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

 the year. The insect proved new to the British and Indian Museum 

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



Tribe TOMICINAE (IPINAE). 



Differs from Cvypturginae and Cryphalinae in having the elytral declivity 

 truncate and armed. 



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

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

 Pityophthorus, and Pityogenes. 



COCCOTRYPES. 

 Coccotrypes integer, Eichhoff. 



REFERENCES. Eichhoff, Patio Tomic. 311 (1879) ; Stebliini; (Xyleborus), Assam Sal Ins. Pes. IiiiL 



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



Habitat. Ceylon ; Assam. 



Trees Attacked. Ebony (Diospyros ebenum) : E. E. Green ; Sal (Sli<>rcn 

 robttsta) : Goalpara, Assam. 



Beetle. -Oval, convex. 1'rothorax black, elytra 

 red-brown. Head punctate. Prothorax longer than 



broad, semi-elliptical, base 

 Description. truncate, anterior margin 



rounded, surface punctate-, 



moderately shining, witli rather tine asperatinns 

 here and there. Elytra slightly wider than pro- 

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

 base straight, sides slightly constricting to apex, 

 which is rounded : disk rather Hat, sides rounded 



FIG. 350. 



Coccotrypes //v/V^vv, Eich. 

 s;il-seed in Assam. 



Infests 



