A first report on the morphology of the postantennal process in Lernanthropus (Lernanthropidae: Copepoda) and its Possible Significance as a Taxonomic Feature

Abstract

Notes on the postantennal process as a category of cuticular spines of parasitic Copepoda are given. Arguments on the status of the postantennal process as an appendage are briefly compared. It is concluded that these structures are cuticular outgrowths and not appendages. The morphology of this structure is concisely compared in the Caiigidae, Taeniacanthidae and Lernanthropidae. The structure of postantennal processes, based on light microscopy and scanning electron microscopy (SEM) studies, of five species of Lernanthropus (L. capistroides Olivier & Van Niekerk, L, sarbae Kensley & Grindley, L. gisieri Van Beneden, L. sp.A and L. sp.B) is discussed and illustrated. Morphological differences of possible taxonomic value are highlighted.