280 THE CANADIAN ENTOMOLOGIST 



A NEW SPECIES OF NEUROTERUS FROM WASHINGTON. 



BY WILLIAM BEUTENMULLER, NEW YORK, 



Neuroterus Washington en sis, sp. nov. 

 Male. — Head black, mouth parts pitchy brown; front shining 

 and indistinctly rugose; eyes very large and conspicuously reticu- 

 lated. Antennae 14-jointcd, basal joints pale yellowish brown, 

 terminal joints darker. Thorax dark brown, with the whole sur- 

 face finely crackled and with minute whitish hairs; parapsidal 

 grooves very fine and line-like and extending to beyond the middle; 

 median line also fine and almost reaching the scutellum. All the 

 lines may be seen by transmitted light; sides of thorax yellowish 

 brown. Scutellum blackish brown, large, rounded and obtusely 

 pointed at the apex; it is more distinctly crackled than the thorax, 

 with a fine transverse line at base, and covered with a few scattered 

 whitish hairs. Abdomen small, smooth and shining; petiole long 

 and yellowish brown. Legs pale yellowish brown. Wings hyaline; 

 veins brown, radial area closed; cubitus not extending to the first 

 cross-vein; areolet large and triangular; anal vein broken. Length, 

 1,75 to 2 mm. 



Female. — Wholly black, abdomen robust and large, petiole 

 very short. Antennae darker and shorter than the male, 13-jointcd. 

 Legs shorter and stouter than those of the male, yellowish-brown, 

 with all the femora dark brown to nearly the tip. Ovipositor very 

 long. 



Length: L50-2 mm. 



Gall: On the leaves of white oak {Quercus garryana), singly ct 

 in numbers on the mid-rib and principal veins, sometimes deform- 

 ing the entire leaf. Rounded, irregularly rounded, oval or elongate 

 and often forming a shapeless mass when confluent. Green and 

 fleshy when fresh; brown, hard and weedy when old and dry. In- 

 side it is solid, whitish and filled with numerous larval cells. 



Length, 10-35 mm. Width, 10-15 mm. 



Habitat: Friday Harbor, Puget Sound, Washington. Galls, 

 July 2nd, 1911. Flics, July 30th, 1911. Lewis H. Weld, collector. 



The species is allied to Neuroterus batatus and N. noxiosus, 

 and it is probably double brooded like these two species. The gall 

 somewhat resembles that of N. noxiosus. Hundreds of specimens 



September, 1913 



