140 



THE SCOLYTID BEETLES. 



Distribution (fig. 85). Michigan: White Fish Point and Grand: 

 Island. 



Host tree. Pinus strobus. 



Identified specimens. U.S.N.M.,H. & S., 1 specimen; Hopk. U. S., I 

 14 specimens of adults, collected by W. F. Fiske at Grand Island, Mich. ! 



BIBLIOGRAPHY. 



Hylurgus rufipennis Kirby, 1837, p. 195, No. 261, original description. Packard, ! 

 1887, p. 176, note. Hopkins, 1899c, p. 343 (in part?). Schwarz, 1900a, p. 537, ; 

 author's copy, p. 185 (in part?). Hopkins, 1901a, p. 16, reference to distribution, | 

 characters, first time recognized since description. 



FIG. 85.Dendroctonusrufipcnnis: Distribution map. (Original.) 

 19. Dendroctonus murrayanaB n. sp. 



Adult. Type of species, female: Length, 6.9 mm; elytra red;* 

 thorax, head, and abdomen nearly black. Head convex, with obscure 

 impression; elytral declivity with striae not deeply impressed; punc- 

 tures of pronotum distinct, coarse, irregular; posterior half of pro- 

 episternal area punctured; striae of elytral declivity with fine 

 punctures; elytral striae scarcely impressed; punctures moderately 

 coarse; interspaces with rugosities moderately coarse, acute, and 

 rather coarsely placed; pronotal punctures coarse, deep, moderately 

 dense. Secondary sexual characters: Elytral declivity convex; 

 striae distinctly impressed; punctures obscure; interspaces convex, 

 with irregular punctures and rows of granules. 



Type labeled "No. 7454 U.S.N.M.," name label, "Hopk. 1/22/08, 

 Pinus murrayana, Keystone, Wyo., J. L. Rebmann, collector, 9 , 

 Hopk. U. S. 2690." 



