102 PROCEEDINGS OF THE NATIONAL MUSEUM vol. 6S 



Va. They were seen on laurifolia at Clearwater, Fla. A Lake City 

 gall contained a pupa on December 6, and two adults emerged ISIay 

 L'3, giving a date for the noi-mal emergence. The flies from fhcVofi 

 galls from Florida do not seem to differ from those reared from the 

 larger galls on imhricaria, rubra, and coccinea in the north, and so 

 eonifera is here made a synonym of ventricosus. As the tarsal claws 

 are simple, the species is transferred to Callirhytis, to which it would 

 run in the Dalla Torre and Kieffer key. Brodie collected galls at 

 Toronto which the writer would determine as this species, the host 

 oak not recorded. 



AMPHIBOUPS ACUMINATUS Ashmead 



This species was described but briefly from a single female. Some 

 additional notes are here given and a description of the male. 



Fennale. — Black, abdomen red, fore and middle tibae and tips of 

 their femora not infuscated. Head rugose; antennae 13-segmented, 

 last incompletely divided by transverse groove. Thorax coarsely 

 rugose; parupsidal grooves rugose, percurrent, no distinct median, 

 die anterior lines fine and parallel. Pits on scutellum large, shallow, 

 bottom shining but sculptured, separated by a distinct septum ; disk 

 rugose, its median groove not deep. Mesopleura finely rugose. Wing 

 pubescent and ciliate, clear except for heavy black cloud on basal 

 half of radial cell above the small areolet. Basal vein heavy. Cu- 

 bitus reaching basal. Abdomen smooth and polished, second tergite 

 bare, occupying over ,8 of abdomen. Ventral spine four times as 

 long as broad in side view. Length of four specimens, 4.3-5.0 mm. 



Male. — Differs from female in having 15-segmented antennae; 

 third segment longest and slightly bent and stoutest, the flagellum 

 tapering to tip. Abdomen black, smooth, and polished, and bare, 

 except for slight pubescence on seventh tergite. Size, 3.2-4.0 mm. 



Described from five specimens: Washington, D. C, 1921 (H. S. 

 Barber) ; Alexandria, Va., June 11, 1923; reared from a gall collected 

 ,)ime 3; and June 29, 1924. 



Gall. — A bud gall to be found just starting about Washington 

 from mid-April to early May. The young galls are red. They soon 

 become greenish with a grayish bloom and often with wine-colored 

 spots. The larvae become full grown and change to pupae in early 

 or mid-June, wdien the galls begin to turn brown. Adults emerge 

 June 11-24. The galls are heavily parasitized. 



Host. — Quercus cinerea, and rubra, the Spanish oak. It was de- 

 scribed as from the black-jack oak on which the writer has never 

 found it as yet. 



Uahitat. — The gall is common on the coast plain region near 

 Washington on Q. rubra. Farther south it occurs on Q. cinerea 

 also. The writer has also seen galls at Ocala, Cottondale. Mari- 



