362 ENTOMOLOGICAL NEWS. [Oct., 'l6 



tinct species which may now be known as Phyllaphis querci- 

 cola n. n. It is. however, not a typical Phyllaphis. 



While working at the Deciduous Fruit Insect Laboratory at 

 Vienna, Virginia, the writer had the opportunity to observe 

 the migrations of querci to and* from Cornus shrubs. It is on 

 the basis of these observations that the present paper showing 

 the distinctness of querci has been written. The migration of 

 the species from Cornus to grass roots was first pointed out 

 by Osborn (1889) who placed panicola Thos. (1879) as a 

 synonym of corni Fab. He took Oestlund (1887) as his au- 

 thority for using the name corni, and therefore included 

 venusta Pass, as a synonym of his summer form. Osborn 

 was entirely right as far as his observations on the migration 

 were concerned, although his presentation of the case has not 

 been altogether followed by American writers. Recently Dr. 

 Patch (1916) has pointed out this fact and made reference to 

 the records (Mordwilko, 1907) of the migration of corni in 

 Europe, which species she considered the same as the Ameri- 

 can. The writer believes that this retention of panicola Thos. 

 is due to a lack of a sufficient knowledge of the variation of 

 our Cornus species. As will be seen by the following descrip- 

 tions and figures, the spring and fall migrants differ very 

 much in antennal characters, and spring migrants vary greatly 

 among themselves in regard to the sensoria of the antennae. 

 The summer forms show other differences, the most important 

 of which is the presence of prominent long curved hairs on 

 the body. These, however, are present to some extent in the 

 spring forms also. In some cases no sensoria are present on 

 the third segment of the summer alate form and this might 

 lead to its being considered a distinct species. A study of the 

 different summer specimens has convinced the writer that 

 panicola must become a synonym of querci. It might possibly 

 be considered that the forms showing the prominent curved 

 hairs are a distinct species and that the summer forms of 

 querci though living upon grass roots would not show them. 

 Since they are, however, indicated upon the spring forms 

 there seems little doubt in the writer's mind that one species 

 only isi represented. 



