Apterostigma bolivianum Weber, 1938

Mera-Rodríguez, Daniela, Serna, Francisco, Sosa-Calvo, Jeffrey, Lattke, John & Rabeling, Christian, 2020, A checklist of the non-leaf-cutting fungus-growing ants (Hymenoptera, Formicidae) from Colombia, with new biogeographic records, Check List 16 (5), pp. 1205-1227 : 1208

(3) Apterostigma bolivianum Weber, 1938

Figure 2E, F

Material examined. COLOMBIA: Antioquia • 1 work- er; Amalfi; 06°51′26″N, 075°07′32″W; alt. 1000 m; 30 Jul. 1997; F. Sernaleg.; MEFLG 40854 .

Identification. Eyes prominent (more than nine omma- tidia along the shortest axis); frontal lobes in full-face view subquadrate; anterior margin of clypeus in fullface view concave, lacking shiny cuticular strip; neck lacking median carina; mandibles elongate; anterior margin of pronotum in dorsal view convex, with median emargination and no lateral thickening; and mesopleu- ral ventral carina in lateral view well-developed, thick ( Lattke 1997).

Distribution. In Colombia, A. bolivianum was only known from Amazonas, thus the new record from Antioquia ( Fig. 1C ) suggests this species might be broadly dis- tributed throughout the country ( Fig. 1C ) ( Weber 1938; Kempf 1972; Fernández et al. 1996; Lattke 1997). Apterostigma bolivianum is also known from the following countries in northwestern South America: Bolivia, Ec- uador, Peru, and Venezuela.

Figures

Figure 1. Geographic distribution of non-leaf-cutting fungus-growing ant species in Colombia. A. Apterostigma pilosum species-group. B. Genus Cyphomyrmex. C. Apterostigma auriculatum species-group, and genera Mycocepurus, Myrmicocrypta, and Mycetomoellerius. D. Genera Sericomyrmex and Paratrachymyrmex.

Figure 2. Apterostigma species encountered in Colombia. A, B. Apterostigma angustum, J. Sosa-Calvo. C–H. Figures taken by M. Esposito obtained from the Antweb database (http://www.antweb.org). C, D. Apterostigma auriculatum, CASENT0922035. E, F. Apterostigma bolivianum, CASENT0922036. G, H. Apterostigma carinatum, CASENT0922038.