Actinopus ramirezi, Ríos-Tamayo & Goloboff, 2018

Ríos-Tamayo, D. & Goloboff, P. A., 2018, Taxonomic Revision And Morphology Of The Trapdoor Spider Genus Actinopus (Mygalomorphae: Actinopodidae) In Argentina, Bulletin of the American Museum of Natural History 2018 (419), pp. 1-84 : 63-64

Actinopus ramirezi , sp. nov.

Figures 32A–G, 33A–E, 44

TYPE MATERIAL: HOLOTYPE ♂ (MACN-Ar 36582): Misiones. Parque Nacional Iguazú, R.P. 101, entre El Timbó y El Palmital [25°39′ S 54°30′ W], 13–15 Sep. 1992, P. Goloboff and C. Szumik, 1♂. PARATYPES: same data and collectors, 2♀ (MACN-Ar 19830).

ETYMOLOGY: The specific epithet is a patronymic in honor of Martín J. Ramírez, a renowned

student of araneomorph spiders, who joined the junior author (P. A.G.) in many field trips.

DIAGNOSIS: Females of A. ramirezi can be distinguished by having a subsquared fovea (fig. 33A), small spermathecae, wide and subquadrate, with a small external lobe (fig. 33C, D), similar to A. pampa (from which it differs in its larger size). Males are distinguished by having a copulatory bulb with poorly developed ATA, well-developed BTA (fig. 32D–F), Ak base with denticles, and MRk present (similar to A. szumikae and A. gerschiapelliarum ). Cheliceral prolongation without cusps (unlike