Damage to vegetables.  Sting nematode is a damaging pest of a numerous vegetable crops including pepper, tomato,  green bean, onion,  squash, cantaloupe and strawberry.
Biology.  Adults can reach lengths greater than 3 mm, making them one of the largest plant-parasitic nematodes. Sting nematodes are ectoparasites of plant roots, meaning that they feed on the roots externally, particularly on root tips which are killed, resulting in little or no new root growth.
Ecology.  Belonolaimus longicaudatus is found primarily in the sandy coastal plains of the Atlantic and Gulf coasts but also occurs naturally in sandy areas of some Midwestern plains states such as Kansas and Nebraska.
Symptoms.   Plants damaged by sting nematodes often wilt, may be stunted and may show symptoms of nutrient deficiency. Seedlings may sprout from the soil and then cease growing altogether.  Sting nematode damage causes a shallow root system of coarse roots with knobby tips. There is often visible plant top damage  as a result of the root damage.
Damage to other crops.  Belonolaimus longicaudatus is also a damaging pest on corn, soybean and turf grasses.
Control.  Crop rotation and nematicides are control methods. 
Links and References.  Sting Nematodes.  University of Georgia. 
Sting nematode: the Scourge of Strawberry.