Abstract
Ascaridoid nematode species reported from fishes and relegated to genera listed by Sprent (1983) within the Heterocheilinae are reviewed. The following species are considered to belong in this category: Dujardinascaris malapteruri (Baylis, 1923) [= D. graberi] from Malapterurus electricus, and possibly Mormyrops engystoma, in Africa; Brevimulticaecum regoi n. sp. from Potamotrygon motoro in South America; Brevimulticaecum heterotis (Petter, Vassiliades & Marchand, 1979) from Heterotis niloticus in Africa; Brevimulticaecum scleropagi Khalil, 1984 from Scleropages leichardti and S. jardini in Papua New Guinea and Australia. The view is expressed that these heterocheiline species are secondarily derived from related species in crocodilians. It is proposed that Gedoelstascaris Sprent, 1978 is a synonym of Brevimulticaecum Mosgovoy, in Skrjabin et al., 1952 and two new combinations are proposed: Brevimulticaecum vandenbrandeni (Baylis, 1929) and Brevimulticaecum australiensis (Baylis, 1931).
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