A GIANT PALM-BORING BEETLE— Uinapate Wrightii 

 By Dr. John A. Comstock 



Illustrations by the author 



One of the most interesting, and also one of the rarest insects 

 occurring in California is the palm-boring beetle known as Dinapate 

 wrightii. His nearest relatives are all inconspicuous diminutive 

 fellows, but for some unknown reason this hermit of his tribe has 

 attained most generous proportions. So far as known he occurs 

 only in the can3'ons debouching into the Coachella valley, where 

 grows the Washingtonia palm (Neowashingtonia filifera). 



Several papers have appeared in scientific journals from time 

 to time dealing with this exclusive resident of our desert valley, 

 but these are for the most part rare technical jDublications that are 

 not likely to come under the notice of our California naturalists. 



It will therefore be of profit to cull from these papers the 

 main points of interest, both technical and general, and group 

 them in one inclusive article. 



PLATE A. 



HEAP OF LARVA. POR3AL A5PE-6T. 



HfAPAhP PROTHORACIC P0RT10^^ »/ LARVA 

 VE-NTRAL ASPE-CT. E-nlakgetP, 



ANAL 5fuMBA'T5 OF 



LARVA . . .VfNTRAL 



AjPE-CT 



DINAPATE 

 WRIGHTII. HORN 



