Longidorus breviannulatus n. sp. (Nematoda: Longidoridae) Associated withStunted Corn in Iowa

摘要

Longidorus breviannulatus n. sp. was associated with stunted corn in Iowa. The nematode has wide bilobed amphidial pouches, a guiding ring 21-26 μm from the anterior end of the body, an odontostyle 81-88 μm long, and a spear extension 28-45 μm long. The most frequent collections and the greatest numbers of the nematode in the field occurred in sandy soils. Nematodes increased in greenhouse culture from an initial population of 100 to 4,120 individuals in 322 days.