ENTOMOLOGICAL NEWS 



AND 



PROCEEDINGS OF THE ENTOMOLOGICAL SECTION 



ACADEMY OF NATURAL SCIENCES, PHILADELPHIA. 



VOL. XXII. JUNE, 1911. No. 6. 



CONTENTS: 



Davis The Woolly Aphis of Oak (Phyl- 

 laphis ? querci Fitch) (Hemip.).--. 241 



Kirkaldy A new Species of Gerris 

 (Hemip.) 246 



Rehn Notes on Paraguayan Orthop- 

 tera, with descriptions of a new 

 Genus and four new species 247 



Skinner Lycaena enoptes, battoides 

 and glaucon (Lepid. ) 259 



Rohwer A new Sawfly of Economic 



Importance (Hymen.) 263 



Barnes and McDunnough Concerning 

 Archylus tener Druce (Lepid.) 265 



Barnes and McDunnough Some re- 

 marks on Mastor bellus and M. 

 phylace ( Lepid.) 267 



Barber Arrangement of the Species of 

 Dendrocoris Bergr., with the de- 

 scriptions of two new Species 268 



Dow On some rare Cicindela (Coleop.) 271 

 Dury Some new Beetles from North 

 Carolina, with Ecological Notes 



(Coleop.) 273 



Editorial 276 



Notes and News 277 



Entomological Literature 279 



Doings of Societies 285 



Obituary Dr. Herman Willem van der 



Weele 287 



Dr. Edouard Piaget 288 



Dr. Samuel Hubbard Scud- 

 der 288 



The Woolly Aphis of Oak (Phyllaphis? querci Fitch) 



(Hemip.)* 



BY JOHN J. DAVIS. * 



(Plate VII) 



A woolly aphis, which is possibly the species described by 

 Fitch as Eriosoma querci, has been collected by us on oak foli- 

 age from various localities in Illinois, definite collections hav- 

 ing been made at Chicago, Joliet, Aurora, Rockford, Peoria 

 and Danville. I have also received this species from Mr. W. 

 P. Flint, who collected it on oak at Normal, Illinois. 



Doctor Fitch described this species in his Fifth Report t as 



follows : 



"Oak Blight, Eriosoma querci, new species. 



"A species of blight, or a woolly aphis upon oak limbs, puncturing 

 them and exhausting them of their sap, was met with in northern 

 Illinois ,but I have never seen it in New York. It is very like a simi- 

 lar insect upon the basswood. The winged individuals are black 

 throughout, and slightly dusted over with an ash-gray powder re- 

 sembling mold. The fore wings are clear and glassy, with the stigma- 



*Formerly of the office of the State Entomologist, Urbana, Illinois ; 

 now at the Experiment Station Building, Lafayette, Indiana. 



t Fifth Report of the State Entomologist of New York. Ann. 

 Rep. N. Y. State Agr. Soc. f. 1858 (1859), P- 804. 



241 



