JAMIESON, B. G. M., GUINOT, D. & RICHER DE FORGES, B., 1995. - Phylogeny of the Brachyura (Crustacea, Decapoda): evidence from spermatozoal ultrastructure. In: JAMIESON, B. G. M., AUSIO, J., & JUSTINE, J.-L. (eds), Advances in Spermatozoal Phylogeny and Taxonomy. Mém. Mus. natn. Hist. nat., 166: 265-283. Paris ISBN : 2-85653-225-X.

Spermatozoa of Dynomene aff. devaneyi (Dynomenidae) and Homolodromia kai (Homolodromiidae) are described. Parsimony analyses affirm the classification of the Brachyura by GUINOT (1978), notably the groupings Podotremata and Heterotremata sensu lato, as sister-groups, and Thoracotremata are confirmed. In the Podotremata, association of the Raninoidea and Cyclodorippoidea is upheld (as sister-groups), each with convincing and unique synapomorphies, but sperm data considered alone do not support alliance of the Homolidae, (a very clearly defined group) with this couplet and therefore do not endorse the grouping Archaeobrachyura which is, however, upheld by combined spermatozoal and non-spermatozoal data. The Dromiacea sensu Guinot (Dromiidae, Dynomenidae and Homolodromiidae) is confirmed spermatologically as a monophyletic grouping but the discreteness of the three constituent families is not upheld. Homolodromia displays a mixture of dromiid and dynomenid spermatozoal features. The Dynomenidae and Dromiidae are each found to be paraphyletic. Latreillia sp., considered an homoloid by GUINOT (1978) and GUINOT & RICHER DE FORGES (1995), forms a polytomy either with Homolidae+Raninoidea-Cyclodorippoidea with the combined, spermatozoal and non-spermatozoal, data set or with Homolidae+Dromiidae-Dynomenidae-Homolodromiidae, for sperm data only. The association by GUINOT (1978) of the Dorippoidea, Portunoidea, Xanthoidea, and Majoidea in the non-thoracotreme Heterotremata is fully supported spermatologically. Spermatozoal data give majids the most basal position in the Heterotremata whereas for the combined data Neodorippe (with carrying behaviour, like most podotremes) appears the least modified member of the heterotreme-thoracotreme assemblage. The Thoracotremata is unequivocally supported.

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