Aulacus ruficollis Cameron, 1887:423, ♀. ♀, Guatemala, Torola 1000 feet (leg. Champion), Lectotype ♀, Guatemala, Torola 1000 feet (Champion) (BMNH, HYM. 3.a.92), designated by Smith, 2008Smith, D.R. 2008. Aulacidae of the southwestern United States, Mexico, and Central America (Hymenoptera). Beitr. Ent. 58:267-365.:302; Smith, 2018Smith, D.R. 2018. Neotropical Pristaulacus Kieffer (Hymenoptera: Aulacidae), species with acute anterolateral mesonotal projections. Transactions of the American Entomological Society 144:309-345.:334, Lectotype ♀ (Natural History Museum, London, UK, Hym. 3.a.92). - Cameron, 1883-1888Cameron, P. 1883-1888. Biologia Centrali-Americana - Insecta. Hymenoptera. (Families Tenthredinidae-Chrysididae). Taylor and Francis, Red Lion Court, Fleet Street. 487 pp., 20 pl.:423 (listed); Schletterer, 1889Schletterer, A. 1889. Die Hymenopteren-Gruppe der Evaniiden. Annalen des Naturhistorischen Museums in Wien 4:107-180; 289-338; 373-546. (distribution); Dalla Torre, 1901-1902Dalla Torre, C.G. 1901-1902. Catalogus Hymenopterorum hucusque descriptorum systematicus et synonymicus. — Volumen III: Trigonalidae, Megalyridae, Stephanidae, Ichneumonidae, Agriotypidae, Evaniidae, Pelecinidae. Pars II. Breitkopf & Härtel, Leipzig. VIII + 1141. (distribution). - As Pristaulacus ruficollis: - Smith, 2005Smith, D.R. 2005. Aulacidae (Hymenoptera) of northern South America, emphasizing Colombia. Transactions of the American Entomological Society 131 (1+2):217-253. (distribution); Smith, 2008Smith, D.R. 2008. Aulacidae of the southwestern United States, Mexico, and Central America (Hymenoptera). Beitr. Ent. 58:267-365. (distribution); Smith, 2018Smith, D.R. 2018. Neotropical Pristaulacus Kieffer (Hymenoptera: Aulacidae), species with acute anterolateral mesonotal projections. Transactions of the American Entomological Society 144:309-345. (distribution).