Heterorhabditis spp.
From BugwoodWiki
Insect-parasitic nematodes in the genus Heterorhabditis are applied to soil as a drench to control larvae of various insects. They are capable of penetrating the body of insect larvae and are the most effective from control of soil-dwelling white grubs and root weevils, as well as caterpillars. Several Heterorhabditis species are available, which vary some in pathogenicity to insects and sensitivity to temperature. Among those available are H. bacteriophora (=heliothidis) (e.g., HeteroMask, Grub-Away, BioStrike Hb, GrubStake Hb), H. indica (e.g., Grub Stake Hi), H. marelatus, and H. megidis.
