36 PROCEEDINGS OF THE NATIONAL MUSEUM vor,. 08 



gall occurs on Q. iiutrgaretta and lyrata also. The Pergande collec- 

 tion contained a gall from Virginia and a fly Vidiich emerged April 

 16, 1883, determined as this species. 



DIPLOLEPIS VACCINIFOLIAE (Ashmead) 

 Callirhytis vaccinifoUae Ashmead, ri-oc. U. S. Nat. Mus., vol. 19, 1S96, p. 130. 



This species Avas described from Truckee, Calif., from Q. vac- 

 cinifolia^ the flies emerging October IG and December 4. The writer 

 collected galls at Tahoe City on August 7, 1922. Some of the galls 

 were still fresh, pale yellowish-green wath beautiful purple spots or 

 streaks shaped like the branching pigment cells in a frog's epider- 

 mis, and best seen against the light. ]Most however were now dry, 

 and contained either larvae or pupae. After the galls are picked 

 and dried the adults do not seem to be able to chew through the 

 thin outer wall. Living adults, which agree with the type, were 

 cut out of the galls on November 10. Messrs. Burke and Hartman 

 collected galls on vaccinifolia at Pine Crest, Tuolumne County, from 

 w^hich adults emerged December 13. 



Koebele collected a similar gall on Q. chrysolepis in Placer County, 

 Calif., and reared a similar fly. The writer collected galls (and 

 cut out a living fly November 10) at Canyonville, Oreg., and also 

 at Wolf Creek, and on the road to Oregon Caves above Holland, 

 and also at Scott Bar, Calif. 



DISHOLCASPIS BASSETTI (GUlctte) 



Galls of this species have been observed on Quercus hicolor at 

 Evanston, Winnetka, Waukegan, and Blue Island, 111. At Evan- 

 ston the galls contained pupae on September 16, and adults emerged 

 October 3, 1915. 



Brodie collected the galls on Q. viacrocarya on several occasions 

 at Toronto. In 1886 the adults emerged November 29-December 5, 

 in all 247 specimens, all females. In a few days several oviposited 

 in buds, thrusting the ovipositor between fold of bud scales. None 

 survived the winter. In 1893 adults issued November 9-23, all 

 females. 



DISHOLCASPIS CINEROSA (Bassett) 



The large pointed-bullet galls of this species, described from an 

 unknown oak, occur on Q. virginmna and have been seen at various 

 points in Texas: Houston, Wharton, Victoria, Cuero, Boerne, Aus- 

 tin, Sabinal, Kerrville, Beeville, Tiger Mills, Columbia (E. A. 

 Schwarz), and Quincy. A tree at Wharton contained hundreds of 

 them in October, 1917. While growing they secrete honeydew and 

 wasps frequent them in large numbers. J. D. Mitchell reared the 

 adults at Victoria December 5-25. 



