Synergus agrifoliae Ashmead, 1896 Synergus agrifoliae Ashmead, 1896. Trans. Am. Entomol. Soc. 23: 189. Type material: USNM. Synergus maculatus Fullaway, 1911. Ann. Entomol. Soc. Am. 4: 371 [not Synergus maculatus Tavares, 1920]. Type material: USNM. Synonymized by Weld (1952: 337). Synergus obscurus McCracken & Egbert, 1922. Stanford Univ., Pubs., Univ. Ser. Biol. Sci. 3 (1): 57. Type material: CAS. Synonymized by Weld (1952: 337). Diagnosis. See Lobato-Vila et al. (2020c: 4). Distribution. USA: California (Ashmead 1896; Fullaway 1911; McCracken & Egbert 1922; Lobato-Vila et al. 2020c). Biology. Reared from a gall ‘not unlike Neuroterus saltatorius (Edwards, 1874) occurring on Quercus agrifolia ’ (Ashmead 1896: 189). Also, from small round brown galls, 2.0 mm in diameter located on upper sides of leaves of Q. agrifolia (Fullaway 1911: 371; McCracken & Egbert 1922: 58), as well as from unknown galls on Q. garryana (Lobato-Vila et al. 2020c). Remarks. The type material of Synergus agrifoliae was examined and the species was redescribed and illustrated by Lobato-Vila et al. (2020c: 4).

Published as part of Lobato-Vila, Irene & Pujade-Villar, Juli, 2021, The genus Synergus Hartig (Hymenoptera: Cynipidae: Synergini) in the New World: a complete taxonomic revision with a key to species, pp. 1-121 in Zootaxa 4906 (1) on page 14, DOI: 10.11646/zootaxa.4906.1.1, http://zenodo.org/record/4434000