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Classification and relationships of Assiculus and Assiculoides (Teleostei: Pseudochromidae)
1Macleay Museum and School of Biological Sciences, A12-Macleay Building, The University of Sydney, New South Wales 2006, Australia, New South Wales 2010, Australia. c.gill@sydney.edu.au
Abstract:
The monotypic Australian pseudochromid fish genera Assiculus and Assiculoides had been previously included in the subfamily Pseudochrominae on the basis of symplesiomorphic characters. Osteological synapomorphies are identified in support of a closer relationship to the remaining pseudochromid subfamilies. Two synapomorphies (five or fewer infraorbital bones, haemal spine of preural vertebra 2 attached to centrum) diagnose a clade consisting of Assiculoides, Pseudoplesiopinae, Anisochrominae and Congrogadinae. Two additional synapomorphies (parhypural not separate from hypurals 1+2, total caudalfin rays modally 27 or fewer) diagnose a more inclusive clade that also includes Assiculus. Two new subfamilies are erected to reflect these relationships.
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