430 HOPKINS: NEW SCOLYTOID BEETLES 



A bulletin (No. 243) of the U. S. Department of Agriculture 

 is now in press giving the results of investigations on the habits 

 and seasonal history of two of the undescribed species, which 

 renders it necessary to publish these brief descriptions without 

 further delay. 



Conophthorus Hopk., gen. nov. 

 (Order Coleoptera, Superfamily Scolytoidea) 



Pronotum with sides broadly rounded from near base to apex, slightly 

 constricted beyond middle with the base margined ; antennal club 

 compressed, not thickened at base; abdominal sternite 7 with posterior 

 margin procurved; pygidium vertical when in contact with posterior 

 margin 'of sternite; pronotal rugosities extending toward or to lateral 

 margin; tarsi with joint 5 not as long as joints 1 to 4 united; antennal 

 club with three sutures on anterior and two on posterior face, sutures 

 1 and 2 without septum; eyes acutely emarginate. 



Type of genus, Pityophthorus coniperda Schwarz, from Marquette, 

 Michigan, Hubbard and Schwarz, collectors. Type in U. S. National 

 Museum. 



The genus Conophthorus is at once distinguished from Pityoph- 

 thorus Eichh. by the absence of sutural septa in the antennal club. 



SYNOPSIS 



Elytral declivity with striae 1, 2 and 3 punctured ; interspace 3 smooth. 



Division I. 



Elytral declivity with stria 1 not punctured, 2 and 3 approximate and 



faintly punctured; interspace 3 rarely without granules . . .Division II. 



V 



DIVISION I 



Head, prothorax, base of elytra, and ventral area dark; remainder of 

 elytra red. Trinidad, Fort Garland, and Buena Vista, Colorado and 

 Las Vegas, New Mexico, in cones of Pinus edulis. Length, 1.25- 

 2.75 mm. Length, female type, 2.65 mm.; Las Vegas Hot Springs, 

 New Mexico, on Pinus edulis, August 13, 1901, Barber and Schwarz, 

 collectors. Type, Cat. No. 7472, U. S. N. M. . ..C. edulis, sp. nov. 



DIVISION II " 



Elytra with strial and interspacial punctures equal or subequal in size 

 and density on dorsal and lateral areas Subdivision A. 



Elytra with strial and interspacial punctures unequal in size and den- 

 sity, those of the interspaces smaller and sparsely placed, especi- 

 ally on the dorsal area Subdivision B. 



