272 ENTOMOLOGICAL NEWS. [June, '14 



It is probable that this louse has an alternate host, as the alate form, 

 the second generation, all leave the cottonwoods. 



Our records on this louse in Colorado are as follows : 

 Grand Junction, June 16, 1907; Migrant; Recorded by C. P. Gillette; 



Host, Populus candicans. 

 Rocky Ford, May 27. 1908; Fundatrix and 2nd generation; Recorded 



by L. C. Bragg; Host, Populus coccinea. 

 Denver, June 16, 1911; Fundatrix and alate migrants; Recorded by L. 



C. Bragg; Host, Populus coccinea. 

 Fort Collins, June 17, 1913; Fundatrix and alate migrants; Recorded 



by L. C. Bragg; Host, Populus coccinea. 

 Longmont, Tune 17, 1913; Fundatrix and immature young; Recorded 



by Asa C. Maxson ; Host, Populus coccinea. 

 Fort, Collins, June 21, 1913; Migrants; Recorded by L. C. Bragg; 



Host, Populus coccinea. 



Phyllaphis quercifoliae n. sp. 



In Bulletin 31, page 116 (1895), of the Colorado Experi- 

 ment Station, Mr. Cowen gave a brief description of a woolly 

 plant louse found upon the under side of the leaves of scrub 

 oaks in Colorado, which he thought to be Fitch's Eriosoma 

 querci, but which he placed in the genus Schizoneura. Mr. 

 Davis in his paper in ENTOMOLOGICAL NEWS, Volume XXII, 

 1911, page 242, accepts Cowen's reference of the species, hav- 

 ing no examples for study himself. 



This is a common louse, which I have often seen on oaks in 

 the mountainous sections of Colorado. A rather careful study 

 of the material in hand has convinced me that the Colorado 

 form is a distinct and new species and not the species describ- 

 ed or referred to by Fitch, Thomas, Oestlund and Davis and 

 that it is probably distinct from the species recorded by Clarke 

 and Davidson found on the live oaks of California. I am, 

 therefore, offering the notes and descriptions given below. 

 While I am referring this species to the genus Phyllaphis, it- 

 does not have the short beak, knobbed cauda, or short second 

 antennal joint found in P. fagi, the type of the genus, and the 

 hind wings have but one transverse vein, and any of these 

 characters might be considered of generic rank. 



The specimens here described were taken at Manitou, Colo- 

 rado, September 20, 1913, by the writer, on native scrub oak, 



