Belonolaimus longicaudatus

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Belonolaimus longicaudatus Rau, 1958 - (sting nematode)

The species is found in North America, especially in south-eastern parts and on sandy soils. It attacks various crops like bermudagrass, other grasses, maize or cotton. The nematode lives as ectoparasite and inserts a long stylet into the root tips, sucking out plant juices. Root tips cease to grown and infestations cause destruction of the root system, chlorosis, wilting, stunting and may lead to plant death. Infestations are particular damaging to young plants and high populations result in substantial yield losses (e.g. more than 50% in groundnuts) or destruction of turf.

Spread to new areas is mainly through the transport of infested crops. Eggs are laid into the soil. The hatching J2 larvae locate a plant root and feed on the root hairs. Later the root tips are attacked directly. The total life cycle from egg to mature adult lasts about 3 weeks.

The adult reaches a length of 2-3 mm and the stylet is 100-140 µm long. The head is separated from the rest of the body by a constriction. Females have a rounded tail and the vulva located near the middle of the body.

For details see the respective page in Wikipedia.