446 
Indiana University Studies 
EXCLUDED SPECIES 
From the list of several hundred names which have at vari- 
ous times been combined with the generic term Cynips and 
which we are now excluding from the genus, it seems neces- 
sary to make detailed comment on only a few. These are 
chosen for the most part from the more recent revisions of 
the genus, or parts of the genus, which have been published 
under the names Dryophanta, Diplolepis, Acraspis , or Philo - 
nix, in the following : 
Dalla Torre, 1893, Cat. Hymen. 2:48-55, 64. 
Dalla Torre and Kieffer, 1902, Gen. Ins. Hymen. Cynip.: 52-53, 58. 
Beutenmuller, 1909, Bull. Amer. Mus. Nat. Hist. 26:246-254. 
Dalla Torre and Kieffer, 1910, Das Tierreich 24: 342-371, 408-413. 
Beutenmuller, 1911, Bull. Amer. Mus. Nat. Hist. 30:343-369. 
Weld, 1922, Proc. U.S. Nat. Mus. 61 (18): 7-15. 
Weld, 1926, Proc. U.S. Nat. Mus. 68 (10): 14-36, 57-62. 
Aggregata Weld, 1926, Proc. U.S. Nat. Mus. 68 (10): 15. Diplolepis 
in orig. publ. I have seen the holotype and 3 paratypes. The agamic 
insect has many characters of true Cynips, but the hypopygial spine is 
unusually long, slender, evenly tapered to a sharp point, and hairy over 
a wide area but without a terminal tuft of hairs. The agamic galls are 
clustered on twigs and not on leaves. These are not true Cynips char- 
acters. 
Amorpha Weld, 1926, Proc. U.S. Nat. Mus. 68 (10): 17. Diplolepis 
in orig. publ. I have studied the holotype and most of the paratypes. 
The agamic insect has a smooth, shining, and naked mesonotum, dis- 
tinct foveae at the base of the scutellum, and a slender, almost needle- 
like hypopygial spine which is without a terminal tuft of hairs. The 
gall is a small, hollow cylinder with the larval cell at bottom. None of 
the above are true Cynips characters. 
Aquaticae Ashmead, 1881, Trans. Amer. Ent. Soc. 9: XVI. Cynips 
in orig. publ. Dryophanta or Diplolepis of later authors. I have seen 
the National Museum types. The insect belongs to the palustris groups 
of insects and is ruled out of true Cynips on the same basis. See 
palustris in this list. 
Atrimentus Kinsey, 1922, Bull. Amer. Mus. Nat. Hist. 46:279. 
Andricus in orig. publ. Diplolepis of later authors. I have re-examined 
paratypes. The bisexual insect has a slender hypopygial spine which 
is not broadened and does not have a terminal tuft of hairs. The 
bisexual gall occurs in the leaf blade from which it is inseparable. 
None of these are true Cynips characters. The insect should not have 
been transferred to Diplolepis (= true Cynips). 
