HETERORHABDITIS HEPIALIUS STOCK, STRONG & GARDNER, 1996 A JUNIOR SYNONYM OF H. MARELATUS LIU & BERRY, 1996 (RHABDITIDA: HETERORHABDITIDAE) WITH A REDESCRIPTION OF THE SPECIES BY S. PATRICIA STOCK Department of Nematology, University of California Davis, Davis, CA 95616, USA Heterorhabditis hepialius and Heterorhabditis marelatus were studied to evaluate their taxo- nomic position. Results from morphological and morphometric analysis and cross-breeding tests indicated these species are conspecific. Therefore, H. hepialius is considered a junior synonym of H. marelatus. A redescription of this taxon is presented. Keywords: cross-breeding, morphology, morphometrics. Entomopathogenic nematodes of the family Heterorhabditidae (Poinar, 1975) have shown to be effective biological control agents of insects (Battisti & Masutti, 1994; Ehlers & Hokkanen, 1996; Ricci et al., 1996; Smith, 1995; Sulistyanto & Ehlers, 1996). This interest has led to numerous studies on their identification and characterization as well as their biology, ecology and geographical distribution. At present the family Heterorhabditidae is composed of the genus Heterorhab- ditis Poinar, 1975, and 9 recognized species, including Heterorhabditis bac- teriophora Poinar, 1975, which is the type species, from Brecon, Australia; Heterorhabditis megidis Poinar, Jackson and Klein, 1988, from Ohio, USA; Heterorhabditis zealandica Poinar, 1990, from New Zealand; Heterorhabditis indicus Poinar,
Nematologica – Brill
Published: Jan 1, 1997
Keywords: morphometrics; cross-breeding; morphology
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