84 



THE SCOLYTID BEETLES. 



6 with small pleural spines, 1 and 2 without distinct dorsal and lateral 

 spines. Pupal type labeled "Hopk. U. S. 34." 



Larva (PL VIII, fig. 1). In addition to the divisional and subdivi- 

 sional characters the larvae range slightly longer than the pupse. 

 Epistoma distinctly elevated. Front without median convexity; 

 clypeus with apex subacutely emarginate; thoracic segments with 

 prominent sternal lobes; the sternellar lobes with distinct foot calli; 

 apex of abdomen subtruncate. Larval type labeled " Hopk. U. S. 25a." 



Galleries (figs. 44, 45). Egg galleries subtransversely winding; 

 eggs isolated; larvae concealed in inner bark; pupal cells in outer bark. 



Distribution (fig. 46). (Hopk. U. S.) California: McCloud, Badger, 

 Chester, Wawona, Sterling, Summerdale, Yosemite, Ballard. Montana,: 



FIG. 40. Dendroctonus brevicomis: Distribution map. (Original.) 



Missoula. Oregon: Grants Pass, Joseph. Washington: Buckeye (near 

 Spokane), Chelan. Idaho: Moscow, Smiths Ferry, Centerville, Stites, 

 Kooskia (Harris Ridge), Pioneer (Grimes Pass), Garden Valley, 

 Placerville, Cedar Mountains, Troy. 



Host trees. Pinus ponderosa and P. lamlertiana. 



Identified specimens. Le Conte, 1; Horn, 1; Hopk. U. S., several 

 hundred, including all stages and work. 



BIBLIOGRAPHY AND SYNONYMY. 



Dendroctonus brevicomis Le Conte, 1876, p. 386, original description, synopsis, 

 localities. Packard, 1887, p. 177, Le Conte quoted. Packard, 1890, p. 722, 

 Le Conte quoted. Hopkins, 1899a, p. 395, reference. Hopkins, 1899b, pp. 13, 

 20, 26, first records of habits, hosts, etc. Hopkins, 1901b, p. 66, habits, galleries, 

 etc. Hopkins, 1902a, p. 3, name restored. Hopkins, 1902c, p. 21, note. Hop- 



