ART. 10 GALL-INHABITING CYNIPID WASPS WELD 89 



Entire ovipositor sometimes extruded. Using width of head as a 

 base the length of mesonotum ratio is 1.2, antenna 2.1, wing 3.5, ovi- 

 positor 3.7. Length, 2.8-3.3 mm. Average of 39, 3.05 mm. 



Type.— Cat. No. 27219, U.S.N.M. Type and 19 paratypes. 

 Paratypes in American Museum, Field, Stanford, Harvard, and 

 Philadelphia Academy. 



Ilost. — Quercus texana. 



Gall (fig. 23). — Spherical, (J-9 mm. in diameter, produced in the 

 fall, attached to the side of the petiole just below the leaf blade 

 and dropping when mature. They are red in color and fleshy 

 inside without a separable larval cell. 



Habitat. — The type galls were collected at Boerne, Tex., October 

 25, 1917, when most of the galls had already dropped to the ground 

 under the clumps of small trees growing on the slopes of limestone 

 hills. The galls were sent to the Eastern Field Station at East 

 Falls Church, Va., for rearing (Hopkins U. S. No. 13G86(:?) where 

 adults emerged August 20 to September 23, 1918. Galls were 

 also seen at Kerrville and were nearly full grown on July 21. 



CALLIRHYTIS CLAVULA (Osten Sacken) 



The oak club gall on Quercus alha has been collected at Kenil- 

 worth, Winnetka, Glencoe, Ravinia, Fort Sheridan, Waukegan, La 

 Grange, Willow Springs, Utica, and Moline, 111. ; Miller, Ind. ; 

 Onekama (T. Hatfield), Mich.; Syracuse and Farmingdale (Crosby), 

 N. Y. ; Popular Bluft', Mo.; Plummer Island, Md. ; Washington, D. 

 C; East Falls Church, Ya., and Blue Hills, Mass. About Chicago 

 pupae were found in the galls in various years on June 11, July 12, 

 and July 16. One emerged July 12, 1912. At Washington living 

 adults were cut out of galls on July 16, 1920 and in 1924 they 

 emerged July 9, 13, and 14. Beutenmueller has had adults emerge 

 at New York City July 14-30. Brodie collected galls at Toronto 

 but seems not to have reared adults. Girault reared adults at Blacks- 

 burg, Va., July 12, 1901. 



A'VHiat seems to be the same gall has been taken on Quercus stel- 

 Jata at Mineola, Tex.; Poplar Bluff, and Washington. 



CALLIRHYTIS CONGREGATA (Ashinead) 



No date of emergence seems to be recorded for this species. Galls 

 collected on Q. wislizenii on May 16, 1922, gave one fly June 3 and 

 two emerged later. Galls on this host were seen at Lakeport, 

 Upper Lake and Baird and in California Redwood Park. Galls on 

 Q. agrifolia were about half-grown and secreting honeydew on 

 May 3. 



