ABT. 18. KOTES ON CYNIPID WASPS WELD. 23 



CALLIRHYTIS PARVA, new species. 



Female. — Reddish-brown, tintennae and tarsi yellowish. Head, 

 sides of pronotum, and mesosciitiim coarsely coriaceous in balsam, 

 but looking almost punctate or rugose under binocular. Scutellum 

 rugose, with well-separated smooth pits at base. Malar space half 

 eye. Antennae, 12-segmented ; 1 and 3 subequal, last equal to two 

 preceding. Parapsidal grooA^es complete; median a mere notch. 

 Wings hyaline; venation obliterated beyond second cross vein; sur- 

 face short pubescent; margin not ciliate; no areolet. Hind tarsus 

 shorter than tibia ; tarsal claws simple. Abdomen equal to head and 

 thorax, nearly as broad as long; pubescent patches at base incon- 

 spicuous — no woolly ring; all tergites visible along dorsal margin; 

 ventral valves turned up into nearly vertical position, and con- 

 spicuous, ventral spine about four times as long as broad. Using 

 width of head as a base, the length of mesonotum ratio is 1.08; 

 antenna, 2.3; ovipositor, 5.0; wing, 3.2. 



Range in size, 1.5-2.2 mm. ; nverage, 2 mm. 



Male. — Body nearly black; antennae yellow, 14-segmented, flagel- 

 lum tapering toward tip; all its segments stout and barrel-shaped. 

 Fore wing margin ciliate. Abdomen shorter than thorax. 



Range in size, 1.4-1.7 mm.; average, 1.6 mm. 



Described from 20 female and 6 male specimens. 



Type.—i\t No. 24727, U.S.N.M. Type female, allotype and 12 

 female paratypes. 



Host. — Que7'cus imhricaria. 



Gall. — On the staminate flowers dropping to the ground about the 

 middle of May. Somewhat globular, greenish-white, covered with 

 coarse sprawling pubescence, 3-4 mm. in diameter, single or in clus- 

 ters. Fleshy at surface, but harder inside; usualW two-celled. 



T'ljfe locality. — Rosslyn, Virginia, near old fortifications on Lees- 

 burg pike above Chain Bridge. Collected May 16. 1920, and flies 

 eut out of galls June 11. The United States Nntional Museum has 

 a similar gall from Cadet, Missouri, collected by J. G. Barlow, May 

 3. 1895. 



CALLIRHYTIS POMIFORMIS (Bassett). 



Cijiiips pomitorinin Bassett, Cunad. Ent., vol. 13, ISSl, p. 74. 

 CalUrkytis viactiUpennis Kieffer, Bull. Hist. Nat. Metz, ser. 2, vol. 11, 

 1904, p. 131. 



C. maculipennis was described from material sent by C. F. Baker 

 from Claremont, California, from Q. agnfolia., and the types v/ere 

 returned to Baker. The writer has seen the type galls and flies at 

 Pomona College and galls at Stanford University from Baker. It 

 seems to be a synonym of fomiformis., and the Pomona material is 

 labeled in Baker's hand " Callirhytis maculipennis Kiefer = Andri- 



