Myrmecotypus O. Pickard-Cambridge, 1894

Pett, Brogan L. & Perger, Robert, 2021, Contributions to the knowledge of Neotropical Castianeirinae (Araneae: Corinnidae): redescription of Castianeira spinipalpis Mello-Leitão, 1945, with first description of the male, and description of a new Myrmecotypus O. Pickard-Cambridge, 1894 from the Bolivian Moxos plains, Zootaxa 5082 (2), pp. 145-158 : 153

Genus Myrmecotypus O. Pickard-Cambridge, 1894

Type species: Myrmecotypus fuliginosus O. Pickard-Cambridge, 1894 (by original designation).

Diagnosis (following Perger & Rubio 2020a, 2021). Cephalic region wide (cephalic index range 64–89), carapace narrowed (carapace index ˂ 60), without thoracic groove but with slight depression instead; PER wider than AER and almost straight to moderately recurved, AME larger than ALE, PME–PME greater than PME–PLE, PLE situated close to lateral margin of cephalic area; abdomen only very slightly petiolated; tibia I ventral spines paired in 2–2, 3–2, 3–3 or 4–4 arrangement; trochanter IV notch usually absent, with only a tiny one, if present.