Ceroptres quercustuber ( Fitch, 1859 ), 2019

Lobato-Vila, Irene & Pujade-Villar, Juli, 2019, Revision of world Ceroptresini (Hymenoptera: Cynipidae) with the description of a new genus and five new species, Zootaxa 4685 (1), pp. 1-67 : 61-62

Ceroptres quercustuber ( Fitch, 1859) incertae sedis

Cynips q. tuber Fitch, 1859 . Trans. N. Y. State Agr. Soc. 18: 806. Type material: presumably lost.

Ceroptres tuber (Fitch) Osten-Sacken, 1865 . Proc. Ent. Soc. Phila. 4: 370 [Unjustified emendation for specific name]. Ceroptres quercus-tuber (Fitch) Weld, 1951 . U. S. Dept. Agr., Agr. Monog. 2: 614.

Ceroptres quercustuber (Fitch) Burks in Krombein et al. 1979 . Smithson. Ins. Press: 1065.

Distribution. USA. State of New York, according to Burks (1979).

Biology. Reared from galls of Callirhytis clavula ( Osten-Sacken, 1865) on Q. alba , according to Osten-Sacken (1865: 350).

Remarks. The type material of this species is presumably lost; it was originally deposited in USNM, but now the box of types is empty, and their current location is unknown (M. Buffington pers. comm.). Furthermore, Fitch’s original description (1859: 806) for Cynips q. tuber is very poor and thus insufficient to distinguish this species from the rest of Ceroptres , and even to establish whether it really belongs to Ceroptres . Osten-Sacken (1865: 370), who transferred the species to Ceroptres , says nothing new about its morphology. Hence, we here propose to place Ceroptres quercustuber ( Fitch, 1859) as incertae sedis until the original material is found and studied.