430 



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



ing from the female as follows: antenn?s 14-jointed, the third 

 joint distinctly incised beneath, the fourth and following joints 

 nearly equal to one another in length and only slightly shorter 

 than the third, the remaining joints successively diminishing in 

 length toward the tip of the antennae. 



The gall of this species occurs on the blackjack oak {Ouercus 

 nigra) ; it is a rounded mass that looks like a collection of wool 

 with numerous seed-like bodies within, and may be fownd on 

 the twigs. 



A. (C.) tubicola Osten Sacken, 



Female : length 3 mm. ; chestnut brown, darker on the abdo- 

 men than elsewhere, in immature specimens the body may be 

 entirely reddish brown; antennae 13-jointed, the joints near the 

 base brownish, the remaining joints black ; thorax inconspicu- 

 ously pubescent; wings hyaline, subcostal and radial veins dark 

 brown, areolet present and triangular, second transverse vein 

 angular, the portion of the cubital vein anterior to the areolet 

 indistinct ; legs mostly yellowish brown, tips of the tarsi black. 



The gall of this species is a perpendicular tube about i mm. 

 in length, slightly contracted at the attached end and open at 

 the opposite end, yellowish, covered on its exterior with numer- 

 ous red spines. It occurs in clusters on Quercus obtusiloba. 



A. (C.) seminator Harris. Oak Seed Gall. 



Length 2.5 mm. ; almost black, highly polished, especially on 

 the abdomen and at the mouth ; antennae and legs reddish or ferru- 

 ginous. 



Tke gall of this species occurs in ring-like clusters around 

 the smaller twigs of the white oak (Quercus alba). The galls 

 are rough, reddish, sometimes as large as a walnut, when fully 

 developed somewhat like a dried sponge in texture, with many 

 egg-shaped, yellowish white, thin, tough cells within that are 

 nearly 3 mm. long. 



New Haven, 5 June, 1906 (A. F. Hawes) ; Wallingford, 9 

 June, 1908 (B. H. W.). 



*A. (C.) tuberosus Bassett. 



Female: length nearly 2 mm. ; antennae 13-jointed, pale brown 

 except toward the apex where they become rather dusky, first 

 and second joints globular ; legs pale brown and more uniformly 



