FAMILY SCOLYTIDAE 



537 



Little is known abont this Cryphalns. I am unable to say 



„ , ,. , ,, whether it is at all abundant or otherwise in the teak 



Relations to the r i. r ^i t i 



Forest. i(jrests ot the country. It has at present only been 



found on old trees. Owinf,^ to its method of attack, 



under which the cambium of the young shoot is destroyed by it and its 



larvae, it is obvious that if it should attack young growth and were to 



infest it in any numbers, it w^ould be capable of doing serious injury. It 



will perhaps be found most abundant in localities where the teak is of 



inferior growth. 



Cryphalus boswelliae, Stabbing. 



Reference. — Stebbing, Depart. Notes, i, 261. 



Habitat. — -Poona, Bombay Presidency. 



Tree Attacked. — BoswelUa serrata. Bhamburda Reserve, Poona. 



Beetle.— Short, elliptical, black, clothed with a very short yellowish pubescence on pro- 

 thorax and elytra. Head and thorax pitted. Elytra with striae and wide rows of bluish- 

 white punctures between them. Mandibles 

 Description. short. A brush of yellow hairs round the 



mouth. Scape of the antennae, which are 

 dark brown, long, club-shaped ; funiculus four-jointed, the first joint .^ _ .. 



thick, elongated, the second to fourth only slightly increasing in a 



size ; club flattened, oval. Eyes long, narrow, transverse. Prothorax 

 not longer than broad, narrower in front than behind, more or less 

 uniformly punctate, with punctures and not tubercular projections 

 anteriorly. Elytra cylindrical, rounded on their posterior declivity ; 

 not wider, or only very slightly so, than prothorax, slightly bending 

 inwards at their base. Legs dark brown. Tibiae curved, and finely 

 toothed on their exterior edges ; tarsus yellow, with the first three 

 joints of equal length. Length, just over ^^ in. Fig. 345, c. 



Larva.— A small, white, curved, legless grub. Fig. a. 



Pupa.— White, unenclosed in any cocoon or covering, the 

 antennae, wings, and legs being quite free, and held close to sides 

 of the beetle. Y'w. b. 



Life History. 



found at the beginning of the month. 



The flight-time of this beetle is about the be- 

 ginning of August, and probably 

 for some time later. The insect, 

 in all stages of its life, is to be 

 _ „ In branches of 



the Bo&wellia which appeared to be dying but were 

 still green, larvae w^ere plentiful, and also pupae and 

 light-coloured beetles, the latter not quite mature. The 

 larvae are to be found in irregular-shaped cavities in 



the bast and sapwood, which usually contain a certain Oyphllus bokvelliae, 

 amount of moist wood-dust. In the pupal and beetle ^teb., in Bosiuellia 

 stages this latter becomes dry. In other branches ■*"^''^'''^^- ^'"o"'-^- 

 darker-coloured beetles were present, and these were apparentl}- the mature 

 beetles of this generation which had already begun egg-laying. The $ and ? 



Fig. 345. 



