Longidorus grandis n. sp. and L. paralongicaudatus n. sp. (Nematoda: Longidoridae), Two Parthenogenetic Species from Arkansas
AbstractTwo new parthenogenetic species of Longidorus were found in Arkansas. Longidorus grandis n. sp. is characterized by its body (5.80-8.24 mm), slightly offset head, head width 20-27 µm, odontostyle 86-100 µm, guide ring 26-35 µm posterior to the anterior end, short conoid to mammiliform tail. Longidorus grandis n. sp. is similar to L. vineacola Sturhan & Weischer, 1964; L. lusitanicus Macara, 1985; L. edmundsi Hunt & Siddiqi, 1977; L. kuiperi Brinkman, Loof & Barbez, 1987; L. balticus Brzeski, Peneva & Brown, 2000; L. closelongatus Stoyanov, 1964; and L. seinhorsti Peneva, Loof & Brown, 1998. Longidorus paralongicaudatus n. sp. is characterized by its body length (2.60-5.00 µm), anteriorly flattened and offset head region 13-18 µm wide, odontostyle length 92-127 µm, guide ring 21-30 µm posterior to the anterior end, tail elongate-conical, and c' = 1.2-2.6. Longidorus paralongicaudatus n. sp. most closely resembles L. longicaudatus Siddiqi, 1962; L. socialis Singh & Khan, 1996; L. juvenilis Dalmasso, 1969; and L. curvatus Khan, 1986.
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