Kinsey: Gall Wasp Genus Cynips 
319 
but with the remark that “it does not exactly agree with any 
described American genus.” Cockerell added that “In Mayr’s 
table, given by Cresson, it runs to Biorhiza , but it does not 
belong there. The gall is like that of Amphibolips” 
The mesonotum is more shining in rydbergiana than in any 
other variety of mellea , and this and the nearly simple tarsal 
claw provide the superficial resemblance to Biorhiza. The 
gall, as I understand our cynipid genera, does not have the 
slightest resemblance to an Amphibolips gall. A direct com- 
parison of rydbergiana with other varieties of mellea, espe- 
cially with unica and anceps which are its geographically 
closest relatives, gives convincing proof of the relationships 
of all these insects. The gall of rydbergiana is quite indis- 
tinguishable from the galls of anceps and compta. While 
recognizing the extreme position of mellea in the subgenus, I 
have given my reasons, under the subgeneric description, for 
keeping this species in Acraspis. 
We owe the recognition of this insect to Weld’s collection 
of a good series from the type locality. Rydbergiana would 
otherwise have to pass in this paper as an unrecognizable 
name, for the type is a broken and immature specimen that 
as recently as the summer of 1926 did not convince me of its 
relations. Thru Mr. Weld’s courtesy I have been able to study 
some of his material and have reached my present conclusions. 
Altho Cockerell described this insect with 12-segmented an- 
tennae, better material shows the 14 segments common to the 
other varieties of the species. 
Cynips mellea variety unica (Weld) 
agamic form 
Figures 51, 387 
Diplolepis unica Weld, 1926 (Mo. and northern Ark. records only), 
Proc. U.S. Nat. Mus. 68 (10) : 34, fig. 9. 
Cynips mellea, var. E Kinsey, 1927, Field and Lab. Manual in Biol.: 110. 
FEMALE. — Largely black, dark rufous to rufo-piceous in places, 
especially about the head; antennae dark brownish rufous, tinged rufous 
on the first two segments; mesonotum shallowly punctate, moderately 
hairy, mostly smooth between the punctations, irregularly coriaceous in 
places; parapsidal grooves not always continuous; anterior parallel and 
lateral lines rather broad, not prominent, partly smooth, partly rough- 
ened; median groove absent; scutellum rather longer than broad, its 
