Lomachaeta vianai Casal 1969
Creators: name: Williams, Kevin A.
name: Cambra, Roberto A.
name: Bartholomay, Pedro R.
name: Luz, David R.
name: Quintero, Diomedes
name: Pitts, James P.
Publisher: name: Zenodo
Year: 2019
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Hymenoptera
Mutillidae
Lomachaeta
Lomachaeta vianai

description: Lomachaeta vianai Casal, 1969
(Figs 13, 14, 19, 20, 55)
Lomachaeta vianai Casal, 1969: 34. Holotype, ♀, Argentina, Misiones, Dep. Concep. (AMNH, examined). Lomachaeta megomicron Williams & Pitts, 2009: 235. Holotype, ♂, Argentina, Salta, 8km N La Viña (EMUS, examined), syn. nov.
Diagnosis. MALE. The following combination of characters is diagnostic for L. vianai: the body is black, except the pale yellow T1 apex; the mandible lacks a ventral tooth basally; the gena is weakly carinate; the head and pronotum are areolate; the forewing has its veins encompassing the basal 0.7 × of the wing; the T1 shape is disciform; the T2 disc has dense small punctures; the T2 fringe is composed of thick bristles; and the paramere is virtually straight and has an weak apical setal tuft. Body length 4–6 mm.
FEMALE. The following characters are diagnostic: the head and mesosoma are dark reddish, the metasoma is blackish; the pronotal and propodeal spiracles are scarcely swollen; the head is 1.2 × wider than the mesosoma; the lateral propodeal face has a few complete areolations; the mesosoma is elongate, with the thoracic dorsum nearly as long as wide; the mesosomal dorsum is tightly areolate without subparallel thickened setae; the T1 shape is subdisciform; T2 has dense oblique punctures, mostly subappressed pale yellow setae, and mostly smooth intervals; and the S6 lateral carina is low angular. Body length 2.5–4.5 mm.
Material examined. Type material. Holotype of Lomachaeta vianai, ♀, ARGENTINA, Misiones, Dep. Concepcion, Santa María, X.1956, M.J. Viana (AMNH, Figs 13, 19); Holotype of Lomachaeta megamicron, ♂, ARGENTINA, Salta, 8 km N La Viña, 26.X–13.XI.2003, M.E. Irwin & F.D. Parker coll. (EMUS). Other material. ARGENTINA: Salta: 8 km N La Viña, 26.X–13.XI.2003, M.E. Irwin & F.D. Parker (1♂, EMUS, Fig. 55); Chaco Occidental, Los Colorados, 100 km NE Joaquin V. Gonzales, 14.III.1992, B. Bestelmeyer (1♀, MIUP); Pocitos, XI.1978, Fritz (1♂, MIUP). BRAZIL, Goiás, Parque Nacional Chapada dos Veadeiros, A.P. Aguiar and B.F. dos Santos, Yellow Pan Trap: Ponto 1, 13–15.IX.2005 (1♂, UFES); Ponto 3, 19-21.IX.2005 (2♂, UFES); Ponto 6, 9–11.IX.2005 (1♂, UFES); Ponto 10, 9–11.IX.2005 (2♂, UFES); Ponto 15, IX.2005 (1♂, UFES). PARAGUAY: Boquerón, Mariscal Estigarribia, Escuela Agricola, 174m, 21 o 59’45”S 60 o 38’31”W, 5–7.X.2003, B. Garcette, Malaise (1♂, MIUP); Presidente Hayes, Los Pioneros, 22.69014 o S 59.77186 o W, 9–11.X.2003, M. LePonce, Pit Fall Trap (1♀, MIUP, Figs 14, 20).
Distribution. Argentina (Catamarca, Misiones, and Salta Provinces), Brazil (Goiás), and Paraguay (Boquerón and Presidente Hayes Departments).
Remarks. Previously known from the unique type only, this species is now recognized as a widely distributed species in South America. Although this species is widespread, it is known from only seven localities. The sex association is based on a male and female collected in similar habitats (Chaco Boreal) in Paraguay.
description: Published as part of Williams, Kevin A., Cambra, Roberto A., Bartholomay, Pedro R., Luz, David R., Quintero, Diomedes & Pitts, James P., 2019, Review of the genus Lomachaeta Mickel, 1936 (Hymenoptera: Mutillidae) with new species and sex associations, pp. 101-136 in Zootaxa 4564 (1) on page 131, DOI: 10.11646/zootaxa.4564.1.4, http://zenodo.org/record/2588770