20 



Dendroctonus. 



Pars 4 



Biologie* Schwarz. Proc. Ent. Soc. Wash. V, 1902, 

 p.32.— Hopkins,Monograpliiel909,p.l01— 104. 

 arizoiiicus Hopk. Monographie 1909, p. 95—97. Arizona 



Biologie: 1. c. 

 Barberi Hopk. Monogr. 1909, p. 85—87. Aa-izona 



frontalis Dietz, Trans. Am. Ent. Soc. XYll, 1890, Neu Mexiko 



p. 32. 

 arizonicus Hopk. Proc. Ent. Soc. Wash. V, 1902, Colorado 



brevicomis var. Barberi Hopk. 1. c. YII, 1906, Utah, Texas 



p. 147. 

 Biologie: Hopkins, Monographie 1909, p. 86. 

 borealis Hopk. Monogr. 1909, p. 133—135. 



Hylurqus rufipennis Mannerheim, Bull. Soc. 



Imp^. Nat. Mose. XXVI, 1853, p. 230 (pars). 

 Dendroctonus rufipennis Leconte, Trans. Am. 



Ent. Soc. XV, 1868, p. 150—178; Proc. Am. Phil. 



Soc. 1876. p. 384—386 (pars). 

 brcTicomis Lee. 1. c. 1876, p. 386. 



frontalis Dietz, Trans. Am. Ent. Soc. XVII, 1890, 



p. 27—32. 

 brevicomis, Dietz, 1. e. p. 32 (pars). 

 Biologie: Packard. Ins. inj. forest trees, in: Bull. 



VII U. St. Dep. Agr. 1890, p. 722. — Webb, 



The western pine destroying bark-beetle, in: 



Bull. LVin ü. St. Dep. Agr. 1906, p. 17—30. 



Hopkins, Monographie 1909, p. 81—85. 

 conTexifrons Hopk. Monogr. 1909, p. 87—90. 



appro.Timatus Dietz, Trans. Am. Ent. Soc. XVII, 



1890, p. 31 (pars). — Schwarz, Proc. Ent. Soc. 



Wash. V, 1902, p. 32. 

 Biologie: Hopkins, Monogr. 1909, 1. c. 

 Engelinauni Hopk. 1. c. p. 130 — 133. 



rufipennis Leconte, Proc. Am. Phil. Soc. 1876, 



p. 385. 

 piceaperda Wickham, Bull. Lab. Nat. Hist. State 



Univ. JowaV, 1902, p.310. — Fall and Cockerell, 



Trans. Am. Ent. Soc. XXXIII, 1907, p. 218. 

 Biologie: Hopkins, Monograph. 1909, 1. c. 

 frontalis Zimm. Synops. Scolyt. Amer., in: Trans. Am. 



Ent. Soc. XV, 1868, p. 149. 

 Bostrichus frontalis Zimm. (nee Fabricius) 1. c. 

 frontalis Zimm. var. destructor Hopk. Bull. 



XXXH U. St. Dep. Agr. 1902, p. 21. 

 brevicomis Dietz, Trains. Am. Ent. Soc. XVII, 



1890, p. 32 (pars). 

 Biologie: Schaufuss, Bark-beetle destroyer in 



Can. Ent. XXW, 1892, p. 316. — Lintner, 



Gardening II, 1894, p. 292. — Chittenden. Bull. 



VII U. St. Dep. Agr. 1897, p. 67, 75: Bull. XXII, 



1899, Div. For. p. 55—56. — Schwarz, Proc. 



Ent. Soc. Wash. IV, 1898, 104—105. — Ulke, 



Proc. U. St. Nat. Mus. XXV, 1902, p. 36, 56. — 



Feit, N. Y. State Mus. Mem. VIII, Bd. 1, 1905, 



p. 6—7. — Hopkins, Monograph. 1909, p.90— 95. 

 Jeffreyi Hopk. Monograph. 1909, p. 114-117. Californien 



mexicauus Hopk. Notes of some Mexican Scollytid. , in: Mexiko 



Proc. Ent. Soc. Wash. VII, 1906, p. 80. 

 Biologie: Hopkins, Monogr. 1909, p. 97—99. 



Alaska 



Californien, 

 Montana, 

 Oregon, 

 Washington, 

 Idaho 



Arizona, 

 Colorado, 

 Neu Mexiko, 

 Utah 



Arizona, 

 Colorado, 

 Neu Mexiko, 

 Süd Dacotah, 

 Utah, 

 Wyoming 



Carolina, 

 Virginia, 

 Louisiana, 

 Arkansas, 

 Texas 



