Family CYMONOMIDAE Bouvier, 1897

Cymonomoides delli [P. Davie (2002: 148)]

Museums

Regional Maps

• Cymonomae Bouvier, E.L. 1897. Sur la classification, les origines et la distribution des Crabes de la famille des Dorippidés. Bulletin de la Société Philomathique de Paris 8 9: 54-70 [55, 59] [corrected to Cymonomidae by Glaessner, M.F. 1969. Decapoda. pp. R399–R533, R626–R628 in Moore, R.C. (ed). Treatise on Invertebrate Paleontology. Part R. Arthropoda 4(2) Crustacea (except Ostracoda) Myriapoda — Hexapoda. Laurence, Kansas : The University of Kansas and The Geological Society of America, Inc. Vol. 2 R399–R651 pp. (R627)].

  Secondary source:

   Glaessner, M.F. 1969. Decapoda. pp. R399-R533, R626-R628 in Moore, R.C. (ed.). Treatise on Invertebrate Paleontology. Part R. Arthropoda 4 Crustacea (except Ostracoda) Myriapoda — Hexapoda. Laurence, Kansas : The University of Kansas and The Geological Society of America, Inc. Vol. 2 pp. R399-R651.

Introduction

This small group is related to the Cyclodorippidae, and indeed, has been long treated as a synonym of that family. Cymonomids are rarely collected except by dredge from deeper waters of the continental shelf and slope. Only one genus and four species are known from deep water off eastern Australia. Cymonomus delli Griffin & Brown, 1976, previously recorded from Australian waters under the genus Cymonomoides was transferred back to Cymonomus by Ahyong & Ng (2009). A modern treatment of the family is available in the works of Tavares (1993a, 1993b).

Diagnosis

Carapace subquadrate, longer than wide; orbits absent. Third maxillipeds elongate, completely covering buccal cavity; exopod of third maxilliped with flagellum. Pereiopods without movable articulation between basis and ischium; first two pairs long and thin, subequal; fourth and fifth pereiopods reduced and positioned dorsally. Female with sternal grooves. First abdominal segments visible dorsally; uropods absent. Genital openings coxal, female on third pereiopods, male on fifth pereiopods.

General References

Ahyong, S.T. & Ng, P.K.L. 2009. The Cymonomidae of the Philippines (Crustacea: Decapoda: Brachyura), with descriptions of four new species. Raffles Bulletin of Zoology Supplement 20: 233-246

Griffin, D.J.G. & Brown, D.E. 1976. Deepwater Decapod Crustacea from Eastern Australia: Brachyuran Crabs. Records of the Australian Museum 30(11): 248-271 figs 1-10

Tavares, M. 1993. Crustacea Decapoda: Les Cyclodorippidae et Cymonomidae de l'Indo-Ouest-Pacifique à l'exclusion du genre Cymonomus. pp. 253-313 in Crosnier, A. Résultats des Campagnes MUSORSTOM, Volume 10. Mémoires du Muséum national d'Histoire naturelle, Paris [1936-1950] 156: 1-491

Tavares, M. 1993. Description préliminaire de quatre nouveaux genres et trois nouvelles espèces de Cyclodorippoidea Americains (Crustacea, Decapoda, Brachyura). Vie et Milieu 43(2–3): 137-143

History of changes