Genus Heterostylites Sars 1920
Genus Heterostylites Sars 1920
This chapter describes the genus Heterostylites and differentiates it from Disseta and Mesorhabdus specifying distinct features in the antennular segment, the exopodal and endopodal segments, the masticatory edge of the Md, maxillule, maxilla, and coxa of Mxp, in the basis of P1 and P2. It notes that the females of Heterostylites can readily be distinguished from those of the other calanoid copepods by a unique feature of the P5—the serrated distal lappet of the second exopodal segment. It further notes that the male can be distinguished from those of the other heterorhabdid genera by the greatly enlarged second exopodal segment of the right P5.
Keywords: genus, Heterostylites, Disseta, Mesorhabdus, calanoid copepods, heterorhabdid genera
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