Slug-predator
Guides
Abax parallelepipedus
Abax parallelepipedus is a ground beetle (Carabidae) native to Europe with an introduced population in North America. It is among the larger species in its genus and has been studied for its potential as a biological control agent of slugs in agricultural systems. Molecular evidence places this species in a distinct clade with A. fiorii, A. ovalis, and A. pyrenaeus, separate from the 'parallelus' group within the genus.
Chlaenius tricolor
Tricolored Harp Ground Beetle, Vivid Metallic Ground Beetle
Chlaenius tricolor is a ground beetle in the family Carabidae, recognized by its vivid metallic coloration. The species ranges from southern Canada to Guatemala, with two recognized subspecies divided by the Rocky Mountains. It has been documented as a predator of slugs in agricultural settings and is considered sensitive to soil disturbance, making it a useful bioindicator of farming practices.
Chlaenius tricolor tricolor
Chlaenius tricolor tricolor is a subspecies of ground beetle in the family Carabidae. It has been documented as a predator of slugs in agricultural systems, making it a beneficial species in horticultural contexts. The subspecies occurs in North America, with records from Canada, the United States, Mexico, and Guatemala. Like other members of the genus Chlaenius, it exhibits vivid metallic coloration.
Chlaenius tricolor vigilans
vivid metallic ground beetle
Chlaenius tricolor vigilans is a subspecies of ground beetle in the family Carabidae, recognized by its vivid metallic coloration. This subspecies occurs across North America from Canada to Guatemala. It has been documented as a predator of slugs in agricultural settings and is considered sensitive to soil management practices, making it a useful bioindicator of environmental disturbance.
Pterostichus melanarius
Rain Beetle
Pterostichus melanarius, commonly known as the rain beetle, is a ground beetle native to Europe that has become established in North America following introduction in the 1920s. Adults are 12–18 mm long, black with straight elytral striations, and exhibit wing dimorphism with both flight-capable (macropterous) and flightless (brachypterous) morphs. The species is a generalist predator of invertebrates, with documented preference for slugs including the invasive gray garden slug Deroceras reticulatum. It occupies diverse habitats including forests, meadows, urban areas, and agricultural fields, and has been widely studied for its potential as a biological control agent.