FAMILY CERAMBYCIDAE 307 



"All satin logs felled for sale should be immediately barked, as then 

 the beetle has no place to lay its eggs. Satin branches 



Protection and ^^^^ marketable should be left as traps for two or three 

 Kemeaies. ' 



months, and then all burnt off, as twenty to thnty 



larvae will probably be found in each branch of any size, and hundreds 



could be killed off each year. 



" Frequent thinnings and quick removal of all sickly trees." 



^olesthes sarta, Solsky. 

 {The Quetta Borer.) 



References.— Solsky (Pachydissus), Hor. Soc. Ent. Ross, viii, p. 150, pi. 5, fig. 4 (1871) ; Stebbing, Note 

 on the Quetta Borer {.Eolesthes sarta), Calcutta Supt. Govt. Printing (1905) ; Gahan, F.Ii.I. Ceranib. 

 no. 128, p. 129 (rgoe). 



Habitat.— Baluchistan : Quetta,'_Loralai, Fort Sandeman, &c.; Afghani- 

 stan. Gahan gives Baluchistan : Quetta (E. P. Stebbing) ; Turkestan, 

 Western Tibet. 



Trees Attacked. — Poplars [Pupnliis alba, P. cuphratica, P. sp. {raemer)] , 

 Willows {Salix alba, S. babylonica), Plane {Platanns orientalis), Elm 

 {Ulmus sp.). 



This insect attained a wide notoriety in Quetta and throughout Baluchi- 

 stan, where, under the name of "the Borer," it did enormous damage 

 in the years igoo-07 to the avenues of poplars, willows, and elms in Quetta 

 itself and in other stations and gardens in the province. 



Beetle. — This beetle can be distinguished from the other species of the genus by the 



pubescence thickly coating the elytra, which is ghstening silvery or satiny grey in life, instead 



of a golden or coppery satiny sheen. The plate on the disk of 



Description. ' prothorax is not well defined, and more or less rugose. The elytra 



are oblicjuely truncate at the apex, the outer angle being unarmed 



and the sutural one dentate or shortly spined. The antennae are more than twice length of 



body in $, less than length of body in J . Length, 33 mm. to 44 mm. ; breadth, 9 mm. to 13 mm. 



PL XX, figs. 8, 9, shows the $ and $ beetles. 



It will be often found that beetles taken on the wing or from off the bark of trees some 

 time after they have issued from the pupating-chamber will have lost some or perhaps most 

 of the distinguishing silvery grey pubescence from the upper surface of the elytra, which then 

 show black with a faint violet sheen or dull olive green in \\\mg specimens. 



Egg, — The egg is milky-white in colour, elliptical in shape with pointed ends, and from 

 3.2 mm. to 4.2 mm. in length. IT. xx, figs, i and 2, shows the eggs. 



LarYa When first hatched out the larva is a small grub about a quarter of an inch in 



length ; the head is brownish, with small black mandibles and yellow body. After 

 a few days the body segments become a dirty black in colour. The full-grown larva is a large, 

 thick, yellow to yellowish-white grub as much as three inches in length and five-eighths of an 

 inch across at the upper and broadest end. The coloration is sometimes almost orange in 

 tint. It consists of a head followed by twelve well-marked segments, the hinder ones being 

 more deeply constricted than the four front ones. The head is small, black, the base being 

 brown ; the mandibles black and powerful. The segment following the head is very 

 much enlarged, as are also the following two ; from the latter the segments gradually 

 taper backwards, the last being about half the width of the first and bluntly pointed ; 



U 2 



