Revision of the monotypic genus Chinchaysuyu Ferretti et al., 2023 from Peru (Araneae; Theraphosidae; Theraphosinae)
Abstract
The Peruvian tarantula genus ChinchaysuyuFerretti et al., 2023 is revised. Another female specimen of Chinchaysuyu spinosaFerretti et al., 2023 was found in the distribution area of this species. The female has two short hypersclerotized seminal receptacles. Two pairs of seminal receptacles of female paratype of Chinchaysuyu spinosa are considered an anomaly. Homologous keels of male palpal bulb are newly proposed. The genus Chinchaysuyu is rediagnosed, differing from all known genera in the presence of type III urticating setae placed in one dorsal patch on abdomen, in combination with the palpal bulb with prolateral superior, prolateral inferior, subapical keel and the non-homologous ventral keel, subparallel with subapical keel and prolateral keels, in the presence of spiniform setae on ventral maxillae, the reduced number of labial cuspules, the presence of long spiniform setae retrolateral on male cymbial lobe, and the female spermatheca consisting of two separate hypersclerotized receptacles.
