EXCLUDED SPECIES
From the list of several hundred names which have at various times been combined with the generic term Cynips and which we are now excluding from the genus, it seems necessary 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 Philonix, in the following:
Dalla Torre and Kieffer, 1902, Gen. Ins. Hymen. Cynip.: 52-53, 58.
Beutenmüller, 1909, Bull. Amer. Mus. Nat. Hist. 26:246-254.
Dalla Torre and Kieffer, 1910, Das Tierreich 24: 342-371, 408-413.
Beutenmüller, 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 characters.
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, distinct foveae at the base of the scutellum, and a slender, almost needlelike 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).
