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 , , , , , , , , r 



Remedies. not mark etable should be left as traps for two or three 



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

 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), HOY. 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.B.I. Ceramb. 

 no. 128, p. 129 (1906). 



Habitat. Baluchistan : Quetta, E Loralai, Fort Sandernan, &c.; Afghani- 

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

 Western Tibet. 



Trees Attacked. Poplars [Populus alba, P. euphratica, P. sp. (raemer)} , 

 Willows (Salix alba, S. babylonica), Plane (PI at anus 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 1900-07 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 glistening 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 obliquely 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 $? . Length, 33 mm. to 44 mm. ; breadth, 9 mm. to 13 mm. 

 I'l. xx, figs. 8, 9, shows the g 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 living 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. I'l. xx, figs. I and 2, shows the eggs. 



Larva When first hatched out the larva is a small grub about a quarter of an inrh in 

 length; the head is brownish, with small black mandibles and \ello\\ b:>,l\. Alter 

 a few days the body segments become a duty bl irk in colour. The full-gnu\ n larva is a la- 

 thick, yellow to yellowish-white grub as much as three inches in length anil live-eighths of an. 

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

 tint. It consists of ahead followed by twelve, well-marked segments, the hm.ln ones bei 

 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 bein;; about half the width of the first and bluntly pointed; 



U 2 



