Journal
NEMATOLOGY
Volume 18, Issue -, Pages 1095-1112Publisher
BRILL
DOI: 10.1163/15685411-00003017
Keywords
bionomics; description; Italy; Milacidae; Milax gagates; Milax sowerbyi; molecular; Mollusca; morphology; morphometrics; new species; Pellioditis; phylogeny; taxonomy
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Funding
- Czech Ministry of Education Youth and Sports [KONTAK II LH 1205]
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A new nematode species belonging to the family Rhabditidae, genus Phasmarhabditis, was isolated in the city of Bari (strain BAR) and near the village Gravina (strain GRA) in Apulia, Italy, and is described herein as Phasmarhabditis apuliae n. sp. The original hosts were Milax sowerbyi and M. gagates. Females are 2623 (2262-2848) mu m long with a long tapering tail. Prominent papilla-like phasmids are present. Males are 2096 (1898-2363) mu m long. They have a peloderan bursa with nine pairs of rays arranged as 1 + 1 + 1 + 2 + 1 + 3. Each ray bears a single papilla. A non-paired papilla is located near the ventral appendage anterior to the cloacal aperture. Prominent papilla-like phasmids are situated close to the tail tip. Dauer juveniles have lateral fields formed from two prominent wide ridges and have three incisures. Phasmarhabditis apuliae n. sp. seems to be a facultative mollusc-parasitic nematode that is capable, in a similar manner to P. hermaphrodita, of long-term survival in the saprophytic phase on decaying organic matter. Ecology, morphology and phylogenetic relationships of Phasmarhabditis nematodes are discussed.
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