PHYLOGENY OF THE ANOMURA (DECAPODA, CRUSTACEA) - SPERMATOZOA AND SPERMATOPHORE MORPHOLOGICAL EVIDENCE

A phylogenetic analysis of selected anomuran, thalassinidean, and othe r decapod crustacean taxa, based on spermatozoal ultrastructural chara cters and spermatophore morphological characters, was performed and th e following relationships of the taxa are elucidated from the trees pr oduced. The Anomura are not a monophyletic assemblage, with the lomoid Lomis being exclusive of the remainder of the anomuran taxa, and the thalassinid Thalassina included in the anomuran clade. The synapomorph y joining the majority of the conventional anomuran taxa (Lomis exclud ed) is the cytoplasmic origin of the microtubular arms. When the palin urid and thalassinoid representatives are separately designated as out groups, the Astacidea and Brachyura jointly formed a sister group to t he Anomura. The superfamilies Thalassinoidea, Paguroidea, and Galatheo idea are not monophyletic groups. In all analyses the anomuran familie s Coenobitidae and Porcellanidae each form a monophyletic group. The p aguroid family Diogenidae is paraphyletic, with the genera Clibanarius and Cancellus separate from a single clade containing the remaining d iogenid genera. The families Paguridae and Parapaguridae form a monoph yletic clade with the exception of Porcellanopagurus. The two represen tatives of the family Chirostylidae (Eumunida and Uroptychus) fail to associate with the other species in the Galatheoidea. The taxa in the family Galatheidae are not a monophyletic assemblage. The only investi gated hippoid Hippa is portrayed as the sister group to the remainder of the anomuran taxa (with the exception of Lomis).