NEMATODE OCCURRENCE IN ONTARIO EARWIGS (NEMATODA: DERMAPTERA)

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Abstract
Earwig (Forficula auricularia L.) populations infested by the nematode Mermis subnigrescens Cobb were collected from the Ayton area of Ontario, Canada, in 1968 and 1969. Parasitism levels in earwigs from this area ranged from 10.9 to 63% and appeared to be a factor in population control. It is suggested that M. subnigrescens could be used to effect population reduction of earwigs by release of infested earwigs or by distribution of nematode eggs.