41 



Phyllopliaga congrua Leconte 



Congrua is also a species of somewhat general distribution in the 

 state, with a strong tendency southward, however, where 175 of our 

 190 specimens were captured in 1907, 1908, and 1909. In two of 

 these years, indeed, none were taken outside of southern Illinois. In 

 the third year, fourteen came from northern Illinois and one from 

 central. Our dates of occurrence range from May 12 to July 7. Our 

 notes on the food-plants of the species are limited to 66 specimens, 65 

 of which were obtained from willows and 1 from the oak. 



Phyllopliaga crassissima Blanchard 



One hundred and sixty-five specimens of crassissima were col- 

 lected in central and southern Illinois during the four years 1907 to 

 1910, at dates ranging from May 21 to June 28. All came from lights 

 except 1, taken April 6 behind a plow, and 10 from various plants — 

 in numbers quite too small to give us any useful hint of the food of 

 the species. 



Phyllopliaga delata Horn 



Delata is apparently a southern species, all our 106 specimens 

 having come from southern Illinois in 1908, 1909, and 1910. The 

 earliest date of collection was April 15 and the latest June 30, both 

 in 1910. Altho we obtained but 29 specimens from food-plants, the 

 fact that 16 of these came from hickories, 12 from oaks, and 1 from 

 the persimmon, seems sufficient evidence that this is an oak-hickory 

 species. 



Phyllopliaga nitida Leconte 



Our specimens of nitida are only 76, all from northern Illinois 

 in 1907 and 1908. Seventy-five of these were taken at Aurora in the 

 latter year, 73 of them from hazel bushes, and 2 from lights. Our 

 only other specimen was from Algonquin, in McHenry county. July 

 6. The Aurora specimens were captured at various dates from May 

 25 to June 9. 



Phyllopliaga forsteri Burmeister 



Forsteri, for which nova is a synonym, is represented with us b} 7 

 70 specimens, of which 60 were southern, 1 central, and 9 northern 

 in this state. It was taken in each of the first four years of our period 

 at dates ranging from May 18 to June 18. Sixty- two of the 70 were 

 collected from food-plants, 42 of them from oaks, 12 from hickories, 

 7 from persimmons, and 1 from the willow, a clear indication that 

 this is one of the oak-hickory-persimmon group of the southern part 

 of the state. 



