The spermatheca in podotreme crabs (Crustacea, Decapoda, Brachyura, Podotremata) and its phylogenetic implications Author Guinot, Danièle Author Quenette, Gwenaël Histoire naturelle, Département Milieux et Peuplements aquatiques, case postale 53, 61 rue Buffon, F- 75231 Paris cedex 05 (France) guinot @ mnhn. fr guinot@mnhn.fr text Zoosystema 2005 27 2 267 342 journal article 10.5281/zenodo.5397969 1638-9387 5397969 Family CYMONOMIDAE Bouvier, 1897 The thoracic sternum remains hitherto poorly known, despite the photograph of the ventral view of a male of Curupironomus agassizi (A. Milne-Edwards & Bouvier, 1899) given by Rathbun (1937 : pl. 31, fig 2, as Cymopolus agassizii ). A description of the spermatheca of Cymonomus granulatus (Norman in Wyville T h o m s o n, 1 8 7 3) w a s p r o v i d e d b y G o r d o n (1963: 51, fig. 10B). Suture 6/7 runs accross the full width of the thorax, thus is complete. The position of the spermatheca is indicated by a distinct bulge on sternite 8, the spermatophoral mass seems rather small, and the aperture is spindle-shaped. Sternite 8 may partly overlap the sternite 7 in providing a kind of pocket at the extremity of the suture 7/8 (see also Tavares 1994 : fig. 37A, as Cymonomus sp. ). The apex of G2 is like the sole of a boot ( Gordon 1963: 52 , fig. 11B), which corresponds to the ovate spermathecal opening. According to Gordon (1963: 52) , the Cymonomus type of spermatheca is reminiscent of that found in the Homolidae .