Darwin wasps of the subfamily Pimplinae (Hymenoptera: Ichneumonidae) of Mexico: Ephialtes genus-group Author Khalaim, Andrey I. Facultad de Ingeniería y Ciencias, Universidad Autónoma de Tamaulipas, Cd. Victoria, Tamaulipas, Mexico. & Zoological Institute of the Russian Academy of Sciences, St. Petersburg, Russia. Author Ruíz-Cancino, Enrique 0000-0003-4305-6568 Facultad de Ingeniería y Ciencias, Universidad Autónoma de Tamaulipas, Cd. Victoria, Tamaulipas, Mexico. & https: // orcid. org / 0000 - 0003 - 4305 - 6568 text Zootaxa 2022 2022-07-29 5169 3 201 251 journal article 112030 10.11646/zootaxa.5169.3.1 2cbc0f84-2011-4e7c-868f-6c305d5f3308 1175-5326 6952172 BB6FBD07-6B8B-4615-BD66-C4AEB612145F 1. Liotryphon atriceps ( Cresson, 1874 ) Ephialtes atriceps Cresson 1874: 394 [ ♀ (ANSP), Mexico , Veracruz , Orizaba ]. References. Cameron 1886: 262 [ Ephialtes ; Mexico ( Veracruz )]. Morley 1914: 16 [ Ephialtes ; remarks]. Cresson 1916: 18 [ lectotype ♀ (ANSP) designated; Mexico , Veracruz , Orizaba]. Townes & Townes 1960: 97 [ Apistephialtes ]. Townes & Townes 1966: 12 [catalogue; Mexico ]. Ruíz-Cancino et al . 2002: 645 [checklist; Mexico ]. Remarks. We know this species only from its descriptions and remarks on the morphology from following publications: [Body] pale ferruginous. Head, antennae, most of prothorax, sutures on thorax above, and transverse spot on lateral apical margin of second and three following abdominal segments black. Scape beneath, tegulae, line before [on upper margin of pronotum] and most of legs white. Hind coxa and femur (except tips) pale honey-yellow. Line on fore and mid femora above and tarsi dusky. Wings hyaline, iridescent. [Body] elongate, narrow, smooth and shining. Head subglobose. Antennae short, slender. Metathorax smooth, rounded. Metasoma subsessile, very long, of uniform width, segments 2–5 above with a swelling on each side of middle. Fore wing with areolet subtriangular ( Cresson 1874 ). “Abdomen red or ferrugineous, at least towards the anus... Mesothorax red, with scape and callosity at tegulae white” ( Morley 1914: 15 ). Townes ( Townes & Townes 1960: 87 ) also mentioned that mesoscutum of this species is almost bare, unlike Nearctic species having mesoscutum with moderately dense setae. Distribution. Mexico ( Veracruz ).