12 



FAEMEKS BULLETIN 778. 



egg laving by each species under outdoor conditions at Washington, 

 D. C. are given on pages 13, 14, and 15. 



So far as known there is onW one 

 generation annually. 



THE FOUR SPECIES RESPONSIBLE 

 FOR MOST OF THE LOSSES. 



Wliile, as previously stated, there 

 are many species of Lyctus beetles in 

 tlie United States, the European Lyc- 

 tus, the southern Lyctus, the velvety 

 Lyctus, and the western Lyctus are 

 the four species responsible for prac- 

 tically all the losses. 



THE EUROPEAN LYCTUS.^ 



The European Lyctus beetle is 

 rusty red-brown, slender, somewhat 

 flattened, elongate, and from one- 

 tenth to one-fifth inch in length. The 

 wing covers have single rows of large, 

 rounded, very shallow punctures. 



This species is commonly met with 

 in northern Europe under natural 

 conditions as well as in commercial 

 products, especially in England, 

 France, and Germany. Therefore it 

 is evident that it was introduced into 

 this country from 

 Eurof)e. In addi- 

 tion to the wide 

 distribution of this 

 species in the tem- 

 perate zones of the 

 world, it is espe- 

 cially common and 

 destructive in the 

 States north of 

 North Carolina, 

 Tennessee, and Ar- 

 kansas. There are 

 a great many rec- 

 ords of damage to 



Fig. 9. — Pupal cells of Lyctus plani- 

 coUh in powder-posted white-ash 

 shovel handle. (Snyder.) 



Fig. 10.— Pupa of a 

 powder-post beetle, 

 Lyctus plaiticolUs. 

 (Chittenden.) 



seasoned hardwood products by this beetle from this 



area, 



includ- 



ing Maine, Massachusetts, Xew York, Pennsylvania, Virginia, 



* Lyctus linearis Goeze. 



