Trissolcus
Guides
Acroclisoides sinicus
Acroclisoides sinicus is a small pteromalid wasp described from China in 1988. It is an obligate hyperparasitoid that exploits the pupal stage of scelionid primary parasitoids, particularly Trissolcus species, within pentatomid stink bug eggs. Laboratory studies demonstrate extreme host selectivity, with strong preference for Trissolcus mitsukurii over T. japonicus and no exploitation of eupelmid parasitoids. The species has recently expanded to Europe and North America, likely following pathways of its primary parasitoid hosts. Its presence raises concerns for biological control programs targeting invasive stink bugs like Halyomorpha halys.