longidorus biformis n. sp. and l. glycines n. sp. (nematoda: longidoridae): two amphimictic species from arkansas. | two new amphimictic species of longidorus were found in arkansas. longidorus biformis n. sp., found in the rhizosphere of hardwood trees along streams in sandy soil in 14 arkansas locations, is characterized by its long body (5.42-9.50 mm), wide expanded flattened head end, head width 20.0 to 26.0 microm, odontostyle 96 to 125 microm, guide ring 29 to 38 microm posterior to the anterior end, elongate conoid tail, and c' = 0.9-2.1. females with 2 to 11 vetromedian supplement-like structures were ... | 2004 | 19262782 |