TWO STRAWBERRY SLUGS 



295 



The following table shows certain characteristics that dis- 

 tinguish these two species of strawberry slugs. The time of the 

 season applies to central Iowa. 



Entomology Section, 



Iowa Agricultural Experiment Station. 



BIBLIOGRAPHY. 



1861. 



1868. 



1869. 



1877. 



1884. 



1888. 



Norton, Edward, Proe. Bost. Soc. Nat, Hist., vol. 8, p. 

 157. Emphytus maculatus described. 



Riley, C. V ., Trans. 111. State Hort. Soc. for 1867, p. 121. 

 Mentions slugs injuring strawberry plants at Rock- 

 ford, Illinois, and Cedar Bluffs, Iowa. Says that these 

 were probably a variety of Emphytus maculatus, the 

 larva? having but one black eye spot on each side. 



Walsh, B. D., and Riley, C. V., Amer. Entom., vol. 1, 

 p. 90. General account. Mentions two generations 

 (Emphytus maculatus). 



Riley, C. V., Ninth Mo. Rep., p. 27. General account. 

 Emphytus maculatus. 



Forbes, S. A., Trans. 111. St. Hort. Soc. for 1883, p. 121. 

 Mentions Emphytus maculatus and says that only one 

 generation was found. Also found eggs beneath the 

 epidermis on the under side of the leaves. 



Forbes, S. A.. Thirteenth 111. Rep., p. 71. General ac- 

 count. Emphytus maculatus. 



Webster, F. M., Rep. Comm. Agr., 1887, p. 152. Larvae 

 supposed to be this species (Emphytus maculatus) ob- 

 served in October near Richmond, Indiana. 



