FAM I LY HOSTR YC H I D AI^: 



157 



the Scots pine ; but in 

 the hitter case the in- 

 sect is not a wood- 

 borer in any sta.^e of 

 its existence. I shall 

 show later that the sal 

 scolytid Sphaerotrypcs 

 siwalikciisis of the Si- 

 walik sal areas also 

 tunnels into green sal 

 shoots to feed, as does 

 the /\ssam species ; but 

 I have found no re- 

 corded instance of a 

 bostrychid acting in 

 this manner. It was in 

 February 1902 that Mr. 

 Littlewood made this 

 disco\-ery, and between 

 1905 and 1909 I was 

 able on several occa- 

 sions to corroborate it. 

 To leave no opening for 

 doubt as to the iden- 

 tity of the species both 

 Mr. Littlewood's and 

 my own specimens were 

 kindly identified for me 

 by M, Lesne. 



As I ha\'e above 

 indicated, the length 

 of time taken b}- each 

 generation or life-cycle 

 of the beetles to ma- 

 ture, and the number 

 of such, necessarilv 

 vary with the part of 

 the country the insect 

 is inhabiting. They 

 will be more numerous 

 in the damp tropical 

 heatof Tenasserimthan 

 in Changa Manga in 

 the Punjab. The num- 

 ber is probably from 



Fig. 105. — Enlrance holes and tunnels o{ Siiioxyloii crassuni 

 in sal wood. iMandla, Central Provinces. 



