INJURIOUS INSECTS OF 1903. 



169 



THE CONFUSED FLOUR BEETLE. 

 Triholium confusum, Duv. 



Fig. 108. — TriholiiDu confusum, Duv. Original. 



Tliis little brown beetle, about % of an inch long, gets its 

 name from being confused with an allied form. It is a serious 

 pest sometimes in flour, cornmeal, oatmeal and patented cereals 

 generally. In the American Miller of Jan. i, 1896, it was re- 

 ported as having probably cost the millers of the United States 

 i?ioo,ooo in 1895 on account of its depredations. It is said to be 

 practically omnivorous, having been found in ginger, cayenne 

 pepper, baking powder, orris root, snuff, slippery elm, peanuts, 

 peas, beans and various seeds, according to a report from the 

 U. S. Department of Agriculture. 



Specimens were sent to us last season from a mill. During 

 the course of some laboratory experiments with this insect, man}- 

 escaped, and one was later found attacking a dried insect speci- 

 men in an imperfect insect box, a habit previously noted. 



MOSQUITOES. 



In last years report, the following species of Ciilicids were 

 listed as occurring in Minnesota : 



Cukx consobrimis, C. iinpiger, C. pungcns (pipicns). Anopheles 

 4 — rnaciilatus {maculipennis) . with the statement that there were 

 doubtless other species in the state not yet described. Time for 

 extended collection in this group was not at our disposal, but 

 the following additional forms were met with: C. sfiiiiidaiis, C. 

 rcsfnans and IVveomyia smitJiii, the latter in rain water in pitcher 

 plant (Sarracennia), in the northern part of the state, in May. 



