INTRODUCTION This paper represents the second report on the decapod crustaceans of the infraorders Thalassinidea Latreille, 1831 and Callianassidea Dana, 1852, collected in the course of the Thai-Danish biodiversity programme BIOSHELF (cf., e.g., Bussarawit et al., 2008; see also below under Material). In a previous paper (Sakai, 2002) the family Callianassidae has been treated; the family Upogebiidae is dealt with herein. The proper classification of the species in the family Upogebiidae Borradaile, 1903, is problematic (e.g., Sakai, 1982, 2006). This is primarily because most species of upogebiids do not show the characters that are considered useful in, e.g., the classification of the family Callianassidae Dana, 1852, and that could thus give clear indications as to the taxonomic position of those species, i.e., could have given clues in which subfamilies and genera they should be accommodated. The Upogebiidae bear no such male Plp1-2 as the callianassid species do: the Plp1 is absent and the Plp2 are featureless from a taxonomic point of view, as no useful differences can be observed between the various species. As a result of these characterless genital organs, Sakai (1982) resorted to applying differences found in the general external morphology and distinguished two subfamilies: Upogebiinae
Crustaceana – Brill
Published: Jan 1, 2015
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