NEW AMERICAN CYNIPIDS FROM GALLS—WELD 17 
Types.—U.S.N.M. No. 56386: Type and 18 paratypes. Paratypes 
in American and Chicago Museums of Natural History, Museum of 
Comparative Zoology, Academy of Natural Sciences of Philadelphia, 
and California Academy of Sciences. | 
Host.—Quercus palustris. 
Gall—aA. pip gall produced late in fall beside small acorns of the 
current season. Almost spherical, up to 6.3 mm. in diameter, smooth, 
bare, green with a small black papilla at apex, secreting honeydew. 
Full grown and dropping off during October after which a thin, fleshy, 
outside layer scon turns black, wrinkles (pl. 2, fig. 12), and dries 
down on the hard inner shell, 3.5 by 4.0 mm., within which is a thick 
nutritive layer containing the larval cavity. 
Biology—Galls were collected in October 1930. During October 
1931 most of the larvae transformed into adults, which remained 
within the galls on the ground during the winter and emerged March 
26 to April 2, 1932. A few larvae hung over and adults emerged on 
April 1, 1933. From galls collected in October 1931 adults emerged 
March 14-28, 1933. October 1935 galls gave adults on March 28, 
1937. On March 20 and April 1, 1940, adults emerged from galls 
collected in October 1938. One was captured at Mount Vernon, Va., 
on March 21, 1915, by W. L. McAtee. 
Habitat —The type material was collected from two trees at East 
Falls Church, Va. Galls were seen at Waterford and Bluemont, Va., 
and at Poplar Bluff, Mo. William Beutenmueller collected galls in 
Woodlawn Cemetery, New York City, but failed to rear adults. 
CALLIRHYTIS BIPAPILLATA, new species 
Female.—Body dark brown, antennae and legs lighter. Head, sides 
of pronotum, and mesopleura coarsely coriaceous. Antennae 11-seg- 
mented, lengths as (scape) 18:15(9) :20(6) :17:14:15:16:17: 13: - 
18:38(18). Malar groove present. Parapsidal grooves very short, 
no median. Foveae small, deep, well separated, disk as broad as long. 
No distinct carinae on propodeum. Surface of wing short-pubescent, 
margin at first sight nonciliate but under magnification of X65 there 
are short cilia on hind margin, veins beyond second cross vein pale, no 
areolet. Abdomen as high as long, lengths of tergites on dorsal curva- 
ture as 22:8:6:7:4:38, ventral spine in side view slightly over twice 
as long as broad, ovipositor exserted and very long. With width of 
head used as a base, the length of mesonotum ratio is 1.0, antenna 1.8, 
ovipositor 12.4, wing 3.5. Length of 50 specimens 0.85-1.45 mm. Av- 
erage 1.15 mm. 
Male.—Sculptured like female, legs and antennae almost colorless. 
Antennae 15-segmented, ratio 3.15. Wing ratio 3.6, margin distinctly 
