MNRJ 7005 - Solarion LOW RES
Pseudophalangodes unicolor Roewer, 1912 from Brazil, photo by A.B. Kury.





The Cryptogeobiidae Kury, 2014 are a family of small Brazilian Gonyleptoidea, which diversity is heavily underestimated. They are typical dwellers of leaf litter in the Brazilian Atlantic Forest. There are a few cavernicolous species [1]

Historical backgroundEdit

Roewer (1912) [2] created a new subfamily of Phalangodidae: the Tricommatinae, for species with trimerous basitarsus I. This subfamily served as repository for many unrelated taxa, later transferred to other families (Kury 2003) [3]. Kury (1992) [4] was the first to remove Tricommatinae from the Phalangodidae and to rank it a a separate family. Only much later, as a result of a cladistic analysis, Tricommatinae was recognized to be constituted by two unrelated groups, with most of its diversity belonging to an as yet undescribed family -- the Cryptogeobiidae (Kury 2014[5]).


Cryptogeobiidae Kury 2014: 22.

Type genusEdit

Cryptogeobius Mello-Leitão, 1935.

Placement and compositionEdit

This family has been created by Kury (2014)[5] to include a great number of genera transferred from Tricommatinae after a phylogenetic analysis.

Included generaEdit

S - undescribed genus MNRJ 4558

Undescribed genus. From Kury, 2014.

Kury[5] identified a large number of species that are currently undescribed, some of which appear to belong to new undescribed genera.


  1. Kury, A.B. & Pérez-G., A. (2008) The first cave-dwelling Spinopilar (Opiliones, Gonyleptidae, Tricommatinae), described from a Brazilian cave. Tropical Zoology, 21(2), 259–267.
  2. Roewer, C.F. (1912c) Die Familien der Assamiiden und Phalangodiden der Opiliones-Laniatores. (= Assamiden, Dampetriden, Phalangodiden, Epedaniden, Biantiden, Zalmoxiden, Samoiden, Palpipediden anderer Autoren). Archiv für Naturgeschichte, Berlin, Abt. A, Original-Arbeiten, 78(3), 1–242.
  3. Kury, A.B. (2003a) Annotated catalogue of the Laniatores of the New World (Arachnida, Opiliones). Revista Ibérica de Aracnología, vol. especial monográfico, 1, 1–337.
  4. Kury, A.B. (1992b) The genus Spinopilar Mello-Leitão, 1940, with notes on the status of the family Tricommatidae (Arachnida, Opiliones). Steenstrupia, 18(5), 93–99.
  5. 5.0 5.1 5.2 Kury, A.B. (2014) Why does the Tricommatinae position bounce so much within Laniatores? A cladistic analysis, with description of a new family of Gonyleptoidea (Opiliones, Laniatores). Zoological Journal of the Linnean Society, 172, 1–48.