FA M I L Y SC O LYT I U AE 



583 



Xyleborus perforans, Wollaston. 



REFERENCES. Wollaston, Ca*. Col. Mader. 96, $ $ (1857); Blandford, Bull. R' .ardens, 



Keu ("Sept. i8f>oj ; Xyleborus sp., Stebbing, Depart. Notes, i, 406. 



Habitat. Sivvaliks, N". India; Goalpara, Assam; Tharrawaddy Forests, 

 Lower Burma; Mysore. Also reported from Bombay, Calcutta, Rangoon. 



Tree and Wood Attacked. Sal (Shorea robmta): Siwaliks and Goalpani : 

 Anogeissus latifolia : Kadin Bilin, Tharrawaddy; Areca catechu: Mysore; 

 Beer-casks. 



Beetle, Elongate, cylindrical. Red-brown. Head punctate, with a brush of hair 

 mouth. Prothorax semi-cylindrical, longer than broad ; base truncate, the basal angles 



rounded, apex strongly rounded ; anterior fourth with close trans- 

 Description, verse asperities, becoming less defined but continued to middle on 

 sides, rest smooth, punctate, more closely so on sides ; a sparse 



covering of spiny hairs anteriorly. Scutellum transverse. Elytra wider than prod. 

 behind, about half as long again, humeral angles rounded, sides slightly widened from behind 



Pi 



Xyleborux perforans, \Voll. 



in Anogeissus latifolia. 



Tharrawaddy. 



r IG. 367. 



Xylelinrtt ; perforate, Woll. 



in Anogeissus latifolia. 



Tharrawaddy. 



f I 



Xyleborus fierfurans, \Vol 

 in Areca cat:ckn. 



humeral .iterior fourth, thence rounded to apex: .nctures rather '. 



and shallow ; apical portion strongly but obliquely declivous and rial' 'h small 



pointed tubercles : the apical portion clothed with e spiny yellow i .red 



with sp;: y hairs. Length, 1.9 mm. to 2.4 n 



This little Xyleborus has a wide distribution in the country and app- 



to infest a number of timber species. 



Life History. In North India the beetle appear- <>\\ the \v in- 



wards the end of April, this being in ;dl probability th- 



first generation of the \ ear. The beetle tunnels down into th>- v/ood of the 

 sal-tree and lays its I ially goes straight into tl, 1: but 



at times, after reach it '-.rtain depth in tfi- 1, thr \-<-ll>: turns 



and carries the gallery at right . its for. . If the 



bark is still on th >:ry n, through the bark in thi> 



manner instead of in the ><\. It is carried for abou* 



inches, and then the beetle again ch tl lirection a.nd br^res rlown 



into the heart-wood. Th i not appear to conhr !f to f; 



k or wood for its operations, but at th: -.ame tinr; I have not found it 



