Amblynotus inermis Walsh, 1864 Ceroptres inermis (Walsh) Osten-Sacken, 1865 Revision of world Ceroptresini (Hymenoptera: Cynipidae) with the description of a new genus and five new species Lobato-Vila, Irene Pujade-Villar, Juli Zootaxa 2019 2019-10-11 4685 1 1 67 (Walsh, 1864) Osten-Sacken 1865 Walsh 1864 [151,545,549,575] Insecta Cynipidae Ceroptres Animalia Hymenoptera 59 60 Arthropoda species inermis    Amblynotus inermis Walsh, 1864. Proc. Ent. Soc. Phila.2: 498. Typematerial: presumably lost.   Ceroptres inermis(Walsh) Osten-Sacken, 1865. Proc. Ent. Soc. Phila.4: 369.   Distribution. USA. State of Illinois( Walsh 1864; Burks 1979).   Biology. Walsh (1864: 498)states that  C. inermiswas reared “… from the gall  Q. pilulae n. sp.”, but Osten- Sacken (1865: 369) mentions that he did not know this species. Burks (1979: 1064)concluded that the host is  Cincticornia pilulaeBeutenmüller, 1892( Diptera: Cecidomyidae), now belonging to the genus  Polystepha Kieffer, 1897. According to Pénzes et al.(2012), this species was obtained from galls on oaks of the Lobataesection.   Remarks.The typematerial of this species is presumably lost; the location of the typesis unknown according to Ritchie (1984)and they are neither deposited in ANSP (online database consulted), CAS (R. Zuparko pers. comm.), MCZ (Charles W. Farnum pers. comm.; some other Walsh typesare deposited in this institution) nor USNM (collection examined). Neither the original description ( Walsh, 1864: 498) nor the notes provided by Osten-Sacken (1865: 369)give distinctive morphological traits to distinguish this species from the rest of  Ceroptres; however, we do not doubt it belongs to  Ceroptressince in the original description it is stated that  Amblynotus inermispresents the following morphological traits: antennae 12-segmented in females and 15-segmented in males; mesopleuron smooth; second and third metasomal segments separated in both sexes; second metasomal segment with appressed pubescence. Hence, we here propose placement of  Ceroptres inermis( Walsh, 1864)as nomen dubium until the original material is found and studied.