Ovicide
Guides
Asaphes suspensus
Asaphes suspensus is a common aphid hyperparasitoid wasp (Hymenoptera: Pteromalidae) that attacks aphidiine primary parasitoids within mummified aphids. The species exhibits sophisticated host discrimination behavior, including self-discrimination that favors unparasitized hosts over self-parasitized ones, but notably lacks interspecific discrimination against competitors. It employs ovicidal behavior as a competitive strategy, physically destroying competitor eggs through distinctive concave puncture sites. This species has been recorded from multiple continents including Europe, South America, and North America.