rava Ingram & Macfie, 1931: 203 (male, female). Type locality: Chile, Llanquihue, Casa Pangue. HT M (BMNH). Distr.- Chile, Argentina (Neuquén: PN Nahuel Huapi, mallín La Heladera, 41°00'56''S, 71°49'45.4''W, 878 m. Río Negro: Estación Biológica Puerto Blest, 41º01'31.5''S 71º49'21.4''W, 787 m. Tierra del Fuego: Paso Garibaldi, 54°41'16.49"S, 67°50'22.23"W; PN Tierra del Fuego, Lapataia, 54°49'56.50"S, 68°33'45.20"W). Refs.: Cazorla & Spinelli, 2015: 186.
Diagnosis: the only Patagonian species of Stilobezzia (Acanthohelea) large and dark, in which males have scutum dark brown to blackish except the humeral pits pale brown and the scutellum pale brown with 13–18 long, large setae and 8–10 thinner, short setae. Females scutum dark brown to yellowish brown except humeral pits and posteromesal portion yellowish, and pyriform spermathecae with hyaline punctuations.