Four new species of Dorylaimida (Nematoda) from New Zealand

Abstract

Four new nematode species belonging to the families Aporcelaimidae, Qudsianematidae and Leptonchidae (Dorylaimida) are described from native vegetation in New Zealand. Makatinus silvaticus n. sp. is 2.3–2.7 mm long and has characteristically narrow lateral hypodermal chords, a lip region set‐off by a slight depression, a 25–27 μm long odontostyle, and a pharyngo‐intestinal junction with a disc. The females have a longitudinal vulva and characteristically shaped vaginal sclerotisation; the males have large spicules and 11–12 ventromedian supplements. Hulqus zelandicus n. sp. females are 0.9–1.0 mm long and have a set‐off lip region, a 7–9 μm long odontostyle, wine‐glass‐shaped amphids with small apertures, a monoopisthodelphic gonad, a posteriorly directed vagina and a long filiform tail; males are unknown. Proleptonchus attenuatus n. sp. is 1.5–1.9 mm long and slender and has a set‐off lip region, a 7.5–8.5 μm long odontostyle, and an elongate pharyngeal bulb; the female has a pseudomonodelphic gonad, the posterior branch being reduced to a vestigial oviduct and traces of an ovary; the males have short spicules. Capilonchus capitatus n. sp. is 1.7–2.2 mm long and slender and has a set‐off lip region with a prominent labial disc, a 9.0–9.5 μm long, attenuated odontostyle with fine lumen and aperture, and a pharyngeal bulb set‐off by a constriction; the female has a pseudomonodelphic gonad, the posterior branch being reduced to a vestigial oviduct and traces of an ovary; the males have dorylaimoid spicules and five ventromedian supplements.