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



Bred from Quercus tinctoria and Q. pdustris. It is thought 

 probable that the individuals are separable into two races respec- 

 tively referable to the trees upon M^hich they make their galls. 



S. mendax Walsh. 



Sculpture of the mesonotum rough, consisting apparently of 

 transverse projecting ridges, with intervening smooth and moder- 

 ately shining spaces, the polished spot on the pleurae almost 

 smooth; ventral valve with a distinct projecting point beyond its 

 tip. 



Bred from the gall of Andricus podagra;, 



S. lana Fitch. Oak Wool Gall-fly. 



Female : length 2 mm. ; mostly black, with a white or straw- 

 colored head ; antennae and legs concolorous with the head ; abdo- 

 men shining smoky yellow, and with a black or blackish cloud 

 occupying the back and sides; antennae 15-jointed. 



The gall is a round mass of a woolly nature, of the size of a 

 hazelnut or a walnut, and of a white or buff color, and grows upon 

 one of the principal veins on the under side of white oak leaves. 



" Specimens of this gall in the Station collection were taken 



in the state, but are without exact records." 



/ 



Philonix Fitch. 



Acraspis. 

 P. gillettei Bassett. 



Female: length 3 mm. or a trifle longer; head and thorax, 

 including their appendages, except the wings, mostly reddish 

 brown; antennae 14-jointed, the second joint three-fourths the 

 length of the first, the third one and one-half the length of the 

 first and second combined, the fourth equal to the first and second 

 together, and half as long as the third, the sixth to thirteenth 

 equal, the fourteenth pointed and only half as long as the preced- 

 ing joint; vertex of the head hairy, though sometimes bare; 

 mesonotum either with or without hairs above, pronotum obscure 

 and with dense fine white hairs, the anterior border of the meso- 

 notum apparently depressed, parapsidal grooves present but in- 

 distinct, median lines absent, scutel small, hairy, its hairs longer 

 than those on the mesonotum, foveae wanting; legs dusky and 

 more decidedly reddish brown than the other parts of the body ; 

 abdomen shining black, the second segment with fine microscopic 



