338 
Indiana University Studies 
National Museum. Labelled Madison, Georgia; galls November 2, 1928; 
insects April 10, 1929; Q. alba; Kinsey collector. 
Of all the long-winged varieties of mellea , this is the most 
distinct. Its black body makes it superficially resemble unica 
and litigans, but in spite of the color the insect is no closer to 
these than to other varieties of the species. Albicolens occurs 
in much the same area of Georgia, Alabama, and the Tennessee 
and lower Ohio River Valleys occupied by the post oak variety 
crassior, but albicolens is strictly a white oak ( Q. alba ) species. 
This host isolation is especially interesting because several of 
the other varieties of the species, occurring in other faunal 
areas, fail to make any distinction between Q. alba and Q. 
stellata. 
Our insects of this variety were bred on March 20 and 
April 10. 
Cynips (Acraspis) conica, new species 
agamic form 
Figures 57, 288-289, 336, 361, 404 
FEMALE.— In color bright brownish rufous, darker rufo-piceous in 
places; antennae bright brownish rufous basally; thorax of normal size; 
the entire mesonotum finely rugose; parapsidal grooves very narrow, 
continuous tho indefinite anteriorly; anterior parallel lines evident but 
almost wholly punctate; lateral lines indistinct, not smooth but evident; 
median groove absent; scutellum quite rugose, rather flattened, the 
foveal groove rather deep, rugose at bottom; mesopleuron finely rugoso- 
punctate, a smooth and punctate area centrally; abdomen bright brown 
and red-rufous, darker in places especially dorso-posteriorly, of normal 
size, rather elongate, the second segment tongue-shaped, covering two- 
thirds of the whole abdomen; legs entirely light brownish rufous; wings 
long, about 1.30 times the body length; the infuscation on the first 
abscissa of the radius of moderate size; the areolet quite large and 
elongate on the cubitus; the expanded tip of the second abscissa of 
moderate size, the cubital cell without clouds or spots; length 2.5 to 3.0 
mm. Figures 361, 404. 
GALL. — A smooth, pointed, conical leaf gall with the broadened 
base bearing spiny projections. Regularly or irregularly conical, up to 
7.0 mm. in height; or the tip rather sharply pointed (and sometimes 
curved) ; the base sometimes flaring, its edge entire or bearing up to 
6 short, blunt, spiny projections; the base up to 6.0 mm. in diameter; 
entirely smooth and glossy, or in part finely puberulent, light pinkish 
brown, with a violet tinge due to the puberulence. Internally filled with 
