Mischonyx scaber (Kirby, 1819) Kirby, 1819

Pinto-da-Rocha, Ricardo, Benedetti, Alipio Rezende, de Vasconcelos, Eduardo Gomes & Hara, Marcos Ryotaro, 2012, New systematic assignments in Gonyleptoidea (Arachnida, Opiliones, Laniatores), ZooKeys 198, pp. 25-68 : 39

Mischonyx scaber (Kirby, 1819) comb. n.

Gonyleptes scaber Kirby, 1819: 453; (3 males & 1 female syntypes; Brazil; NHM 1863.41; examined from detailed photo).

Eugonyleptes scaber : Roewer, 1913: 219; Kury 2003: 123.

Xundarava holacantha Mello-Leitão, 1927: 20; (female holotype; Brazil, Rio de Janeiro, Niteroi; MNRJ 1469; examined).Syn. n.

Mischonyx holacanthus : Kury 2003: 133.

Material examined.

BRAZIL. Locality not specified further, 3 males & 1 female syntypes (NHM 1863.41). Rio de Janeiro: Niterói, female holotype of Xundarava holacantha (MNRJ 1469); ditto, male holotype of Weyhia absconsa (MNRJ 1483).

Diagnosis.

Mischonyx scaber resembles Mischonyx cuspidatus and Mischonyx poeta because of armature of the male femur IV: presence of a dorsobasal apophysis relatively short and curved; one retrolateral apophysis on distal third; and a row of high, acuminated tubercles increasing in size from the base to distal third. Mischonyx scaber can be distinguished from Mischonyx cuspidatus by the presence of a short gap between the retrolateral row and the retrolateral apophysis on femur IV (the retrolateral row is continuous to the retrolateral apophysis on femur IV in Mischonyx cuspidatus ). Mischonyx scaber can be distinguished from Mischonyx poeta by the absence of enlarged tubercles (present in Mischonyx poeta ) on the posterior part of the lateral margin of the dorsal scutum.

Taxonomical note.

Mischonyx scaber was described from Brazil, however, many authors, including Kury (2003), cited other countries as its type locality. It is clearly written “Brazil” on the label of the Gonyleptes scaber holotype. The only other known specimens of this species are the types of Xundarava holacantha and Weyhia absconsa (both in poor condition). The precise distribution records are Rio de Janeiro (Ilha do Governador) and Niterói.