mapuche Cazorla & Spinelli, 2015: 170 (male, female). Type locality: Argentina, Río Negro, PN Nahuel Huapi, río Manso superior, 41°14'28.4''S, 71°44'12.6''W, 837 m. HT M (MLPA). Distr.- Chile, Argentina (Neuquén: PN Nahuel Huapi, isla Victoria, laguna Mercedes, 40°52'43.4''S, 71°34'41''W, 899 m; PN Nahuel Huapi, mallín La Heladera, 41°00'56''S, 71°49'45.4''W, 878 m. Río Negro: type locality; PN Nahuel Huapi, laguna Los Clavos, 41°02'48.6''S, 71°49'33.9''W, 1194 m; PN Nahuel Huapi, 41°14'8.14''S, 71°46'58.5''W, 845 m). Refs.: Cazorla & Spinelli, 2015: 170.

Diagnosis: The only Patagonian species of Stilobezzia (Acanthohelea) with gonostylus greatly curved subbasally over 90°, aedeagal sclerites heavily sclerotized, slender to mid length and the distal half broadening abruptly and mesally directed with subapical pointed divergent prongs. Female unknown.