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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]).

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 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.

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