Longidorus grandis n. sp. and L. paralongicaudatus n. sp. (Nematoda: Longidoridae), Two Parthenogenetic Species from Arkansas

Weimin Ye, R. T. Robbins

Abstract


Two 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.

Keywords


arkansas; longidorus grandis n. sp.; longidorus paralongicaudatus n. sp; morphology; new species; sem; taxonomy

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