142 



THE SCOLYTID BEETLES. 



Distribution (fig. 86). (Hopk. U. S.) Wyoming: Homestake, Sar- 

 atoga, Keystone, Cheyenne National Forest, and Big Horn National 

 Forest. Colorado: Jefferson. Additional localities from other col- 

 lections: (U.S.N.M.) (H. & S.), National Park, Wyoming. 



Host trees. Pinus murrayana and Picea engelmanni. 



Identified specimens. H. & S., 5; Hopk. U. S., over 100 specimens, 

 including adults, larvae, and work. 



BIBLIOGRAPHY. 

 Dendroctonus shoshone Hopkins, 1902a, p. 3, manuscript name only. 



20. Dendroctonus punctatus Le Conte. 



(PI. VI, fig. 20.) 



Adult. Typical female: Length 6.5 mm., dark reddish brown. 

 Head convex, with moderately distinct anterior impression. Elytral 

 declivity with striae distinctly impressed. Punctures of pronotum 

 distinct, coarse, irregular; posterior half of proepisternal area punc- 

 tured; striae of elytral declivity with coarse punctures; elytral striae 

 distinctly impressed; punctures coarse and distinct; interspaces 

 rather narrow, convex, moderately rugose on dorsal area, but nearly 

 smooth on lateral area. Secondary sexual characters: Declivity 

 convex, shining; striae distinctly but not deeply impressed; punc- 

 tures coarse and distinct; interspaces narrow, convex, with row of I 

 granules. 



Typical female labeled "type of drawing," name label, "Hopk. 

 4/25/02, Picea rubens, Randolph County, W. Va., A. D. Hopkins, 

 collector, 9 , Hopk. W. Va. 6312." 



Variations. There appears to be very little variation in the few I 

 specimens observed. 



Distinctive characters. This species is at once distinguished from | 

 all of the preceding by the coarse punctures of the elytral striae, 

 especially on the declivity. Its nearest ally is D. micans, of Europe, i| 

 from which it differs in its smaller size, more elongate form, and 

 more distinctly impressed elytral striae. 



Revisional notes. While the original description does not include 

 the more distinctive characters, it was based on a type which was 

 readily recognized as a distinct species. Dietz referred the specimen 

 in the Horn collection, labeled D. punctatus Lee., to D. rufipennis 

 (Kirby), but it is certainly distinct from what is now recognized as | 

 D. rufipennis. 



Host tree. Picea rubens. 



Pupae, larvae, and galleries of this species have not been observed. 



Distribution (fig. 87). (Hopk., W. Va.) 1 specimen collected by 

 the writer May 21, 1892, in the high mountains of Randolph County, 



