Belonolaimus species The Sting Nematodes Damage to Turf.   One of the most widespread and destructive nematode pest of turfgrasses. Biology.  Belonolaimus species  are large nematodes (between 1.0 – 3.0 mm) possessing a characteristic long, slender stylet.  Sting nematodes feed on the tips and along the sides of the roots. Ecology.  Sting nematodes are restricted to very sandy soils.  Symptoms.  Turf affected by sting nematode exhibits drought and malnutrition symptoms and does not respond to watering or feeding. Badly affected plants collapse and die in patches that can measure up to several feet in diameter.  Damage to other crops.  Sting nematodes have a wide host range including soybeans, wheat, peanuts, beans, and other crop plants.   Control.  Good sanitation practices (avoid introducing nematode-infested soil or sod into areas free of nematodes.) Chemical nematicides have been successful in reducing sting numbers.