5 68 FAMILY SCOLYTIDAE 



CHAPTER XXL 



RHYNCHOPHORA (continued) Family SCOLYTIDAE (continued). 



Tribe SCOLYTINAE (ECCOPTOGASTRINAE). 



TIBIAE with the outer edge smooth ; front tibiae lengthened out on outer 

 edge with a one- or two-toothed hook. Abdomen flexed upwards. 



The tribe includes the important genus Eccoptogaster, better known 

 as Scolytus. The genus contains three Indian species which are serious 

 pests of the deodar. 



SCOLYTUS. 

 Scolytus (Eccoptogaster) major, Stebbing. 



REFERENCES. Stebbing, Ind. For. Mem. Zool. Ser. vol. i, pt. ii, p. 21 ; id. Bark-bor. Beet. Attack, Simla 

 Catch. Area, For. Bull. no. 2 (1908) ; Scolytus sp. Ind. For. vol. xxvi, p. 560; vol. xxvii, pp. 26, 132, 

 231, 344 ; Depart. Notes, vol. i, pp. 45, 203. 



Habitat. Throughout deodar forests of North-West Himalaya. 

 Tree Attacked. Deodar (Cedrus deodara). North- West Himalaya. 



Beetle. Black, shining ; elytra dark red-brown or black. Front of head flat, impressed 

 over mouth ; a faint median elevate longitudinal line on front which does not reach the 



mouth or vertex, bounded on either side by an area very finely 

 Description. longitudinally striate ; rest punctate, punctures finer on vertex, a 



shallow depression niedianly on vertex just above basal margin. 



I'K .thorax constricted and impressed on anterior lateral margin ; very smooth and shining 

 except for a rather thickly punctate and slightly rugose area behind anterior margin, this 

 punctured area stretching down diagonally on either side and being intercepted medianly by a 

 narrow longitudinal smooth space, a prolongation from the smooth area on disk. The whole 

 of the latter finely, pitted, the punctures rather scattered and more abundant laterally ; a few 

 lungish scattered hairs laterally in anterior portion. Elytra impressed medianly at base, 

 slightly narrowed behind, the outer margins of apical fourth finely serrate, apices separately 

 rounded ; striate-punctate, the striae not prominent and punctures shallow, not very conspicuous 

 and confluent at apices ; covered with irregular scattered hairs, most abundant laterally. 

 Abdomen with anterior margin of first segment prominent and produced forwards and thickened, 

 rugose, shining, second segment concave, third and fomth with a small lateral tubercle on 

 posterior margin, fifth flat, apical edge incurved medianly. Legs brown to blackish. Antennae 

 and tarsi rufous brown. Length, 4.25 mm. to 4.5 mm. PI. Ivii, figs, c I, f, d, shows the dorsal 

 and side view of the beetle. 



. The egg is spherical in shape, yellow in colour, and shining. It is very small, 

 being about 0.8 mm. in diameter. 



-The larva is small, curved, legless, and white in colour. It is largest across at 



When full-grown it is from \ to i in. long. On first hatching out the grub 



e white dot. The curved shape is, however, easily recognizable by the time it has bored 



m. away from the egg gallery. The larva natural size and enlarged is shown in figuiv. 



The pupa is white and has the general shape of the beetle ; but all the parts are 



, antennae, and wings being held pressed against the breast as shown in figure. 

 Length, 4 nun. 



beetle when it is in the resting stage is light yellow and then light brown, 

 dually darkening to black as the outer parts harden. 



