374 CONNECTICUT GEOL. AND NAT. HIST. SURVEY. [Bull. 



equal to the combined length of the antepenultimate and the penul- 

 timate joints ; third abdominal segment in the male longer than 

 the second, in the female the second abdominal segment occupy- 

 ing nearly all of the abdomen. 



Galls on Rosa Carolina. 



Stonington, 10 March, 1906 (B. H. W.). 



P. sylvestris (Osten Sacken). Aulax sylvestris Osten Sacken. 



Length 2.2 to 3 mm. ; pitch-black, antennae reddish ; feet yel- 

 lowish red ; wings hyaline ; abdomen brownish verging to chestnut 

 brown or yellowish brown beneath; male antennae 14-jointed; 

 female antennae 12-jointed; face aciculate, its scratches converg- 

 ing toward the mouth, front and vertex polished ; prothorax 

 opaque, dorsum of the mesothorax minutely punctate but shin- 

 ing, pleurae with a polished quadrangular space, the lowest side 

 of which is somewhat aciculated, scutel gibbose, deeply rugose 

 punctate; second and third segments of the abdomen in the male 

 equal in length, the second segment of the afitiomen in the female 

 covering nearly all of the rest of the abdomen. 



Aulax Hartig. 

 Aylax. 

 *A. podagras Bassett. 

 Length 2.5 mm., the male somewhat shorter ; female as fol- 

 lows : mostly black ; vertex reticulated or punctate, antennae dark 

 brownish red, 13- jointed, first joint club-shaped, second joint 

 half as long and the third as long as the first, the succeeding 

 joints equal to each other in length and slightly shorter than the 

 third ; mesonotum with a few scattered hairs and with transverse 

 wrinkles, also with two lines reaching half-way to the scutel, 

 and with a median line, which latter is broadest at its origin at 

 the scutel but disappears half-way between the latter and the 

 pronotum, parapsidal grooves entire, in addition lines at the base 

 of the wings ; scutel rugose, its f oveae rugulose ; legs concolorous 

 with the antennae; wings hyaline, their veins dark, radial area 

 closed ; abdomen polished, its second segment twice as long as 

 the third, the two almost entirely covering the rest of the 

 abdomen; male with the antennae 14-jointed, the third joint 

 curved and incised ; the abdomen smaller in the male than in the 

 female. 



