10 SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL. 82 



1897. Hubbard, H. 0.(26). 



Hubbard, like the first author, states that Gnathotrichus materiarius 

 is an ambrosia beetle ; that means that its main food consists of 

 fungus mycelium. The latter is always abundant in the tunnels. 



1899. Hopkins, A. D.(27). 



Gnathotrichus materiarius Fitch. Very common in sap-wood of dead and 

 dying pine and spruce trees, logs, and stumps ; widely distributed. 



Hister parallclus Say was found with Gn. materiarius in scrub pine wood. 

 Kanawka Station. 



1901. Felt, E. P. (28). 



Taken from white and pitch pine, common. 



1904. Hopkins, A. 0.(31). 



The eastern pine wood stainer. Gnathotrichus materiarius Fitch. Excavates 

 several branching galleries from a single entrance burrow, the broods 

 living in short side chambers in sap-wood and heart-wood of injured, 

 dying, and recently felled pine and spruce. Eastern United States and 

 Canada. Very common and injurious. 



1905. Hopkins, A. 0.(34). 



The author describes a new species of Gnathotrichus, namely nitidi- 

 frons from Mexico. In a remark he mentions the near relation- 

 ship to materiarius Fitch, and gives the range of the latter in 

 pines as from Maine to Florida and Texas and in Picea from 

 Maine to the higher mountains of North Carolina. 



1905. Carman, H. (33). 



Carman, in describing damages caused by Monarthrum fasciatiim 

 and mali, comes to the conclusion that those injuries mentioned by 

 Packard (5) to wine casks are most probably the same. 



1905. CuRRiE, R. P. (32). 

 Copy of Hopkins, A. D.(i7). 



1906. Felt, E. P. (35). 



No new data. Eastern pine wood stainer. 



1907. Fall, H. C, and Cockerell, T. D. A. (36). 

 Gnathotrichus materiarius Fitch. Cloudcroft (Viereck). 



1909. SVVAINE, J. M.(4o). 

 References to literature only. 



1910. Hagedorn, M.(4i). 

 References only. 



1918. Swaine, J. M.(49). 

 Host trees : Eastern pines, spruces, and eastern larch. 



