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



rather distinct indication of an additional joint, antennae slightly 

 dusky yellow ; thorax black, sparsely pubescent, coarsely punc- 

 tate or pitted, with three distinct longitudinal grooves above; 

 wings dusky throughout but not clouded and with dark reddish 

 brown veins that disappear before reaching the margin, areolet 

 equiangular ; legs with the anterior pair as well as the middle pair 

 dusky yellow, the posterior pair dusky brown ; abdomen red, of a 

 dull brick red color, after having been in alcohol, its second seg- 

 ment with a few scattered hairs beneath the wings, and a little less 

 than half the length of the whole abdomen, the remaining segments 

 microscopically punctate. Male : somewhat smaller than the female, 

 otherwise differing as follows: antennae approximately 3 mm. 

 long or equal to the length of the body, and darker than in the 

 female, composed of 16 more or less distinct joints ; legs dark 

 brown, posterior pair nearly black, all shining; abdomen black 

 and shining, reddish beneath, second segment partially covering 

 the succeeding one. 



There is some question as to whether the above described 

 male belongs to this species or not; both sexes, however, were 

 bred at the same time from similar galls on the leaves of 

 Qurcus rubra, the red oak. 



The type locality of this species is Waterbury, 10 July. 

 *A. (C.) saccularis Bassett. 



Length 2.5 mm. ; head black, vertex rugose, face with white 

 hairs; antennae 15-jointed, reddish brown at the base, dusky 

 brown at the tip, first joint cup-shaped, second globular, third 

 twice as long as the first and second combined, fourth and 

 remaining joints each half as long as the third; thorax black, 

 mesothorax coarsely wrinkled, dorsulum with entire parapsidal 

 grooves that are rather indistinct anteriorly, two parallel lines 

 extending half-way to the scutel, and a line over the base 

 of the wings, these latter nearly uniting with the parapsidal 

 grooves anteriorly, scutel wrinkled, with foveae ; posterior legs 

 dark reddish brown, lighter at the joints than elsewhere, anterior 

 legs lighter, claws simple ; wings with slightly fuscous membrane 

 and uniformly dark smoky brown veins, areolet present, cubitus 

 reaching to the first transverse vein, radial area open ; abdomen 

 shining black. 



