Predatory-beetle
Guides
Scymnus fraternus
dusky lady beetle
Scymnus fraternus is a small lady beetle in the subfamily Scymninae, commonly known as dusky lady beetles. The species was described by LeConte in 1852 and occurs in northeastern North America. Records indicate presence in Ontario, Québec, and Vermont. Like other Scymnus species, it likely preys on small hemipteran pests such as aphids and scale insects, though specific ecological studies for this species are limited.
Scymnus garlandicus
garland lady beetle
Scymnus garlandicus, commonly known as the garland lady beetle, is a small dusky lady beetle in the family Coccinellidae. It belongs to the subfamily Scymninae, a group of minute lady beetles often characterized by their diminutive size and inconspicuous coloration. The species was described by Casey in 1899 and is recorded from North America. Like other members of Scymnus, it is presumed to be a predator of small soft-bodied insects, though specific biological details remain poorly documented.
Scymnus indianensis
Indiana lady beetle
Scymnus indianensis, commonly known as the Indiana lady beetle, is a small dusky lady beetle in the family Coccinellidae. It belongs to the genus Scymnus, which comprises minute lady beetles often characterized by their dull coloration and pubescent bodies. The species was described by Weise in 1929 and is documented from North America, with specific records from Ontario, Canada. Like other members of Scymninae, it is presumed to be a predator of small soft-bodied insects, though direct observations of its biology remain limited.
Stenus croceatus
Stenus croceatus is a species of rove beetle in the subfamily Steninae, family Staphylinidae. The species was described by Casey in 1884 and occurs in eastern North America, with records from Canada and the United States. Like other members of the genus Stenus, it possesses specialized mouthparts adapted for predation. The species is part of a large and diverse genus containing over 3,000 described species worldwide.
Stenus femoratus
Stenus femoratus is a species of rove beetle in the subfamily Steninae, first described by Thomas Say in 1831. Like other members of the genus Stenus, it possesses specialized labial structures that can be everted using blood pressure to capture prey. The species is broadly distributed across eastern and central North America, with records from Canada and numerous U.S. states.
Stenus juno
Stenus juno is a species of predatory rove beetle in the family Staphylinidae, subfamily Steninae. It was first described by Paykull in 1789. The species has a broad Holarctic distribution, occurring across Europe, northern Asia, and North America. Like other members of the genus Stenus, it possesses specialized adaptations for capturing prey.
Stenus morio
Stenus morio is a species of rove beetle in the subfamily Steninae, first described by Gravenhorst in 1806. It belongs to a genus noted for specialized predatory adaptations, including the ability to use blood pressure to eject mouthparts for capturing prey. The species has a broad Holarctic distribution spanning Europe, Asia, and North America.
Stenus pinguis
Stenus pinguis is a species of rove beetle in the subfamily Steninae, first described by Casey in 1884. The species belongs to a genus renowned for its remarkable water-gliding ability, enabled by specialized gland secretions that reduce surface tension. As a member of Stenus, it likely employs the characteristic labial prey-capture mechanism using eversible mouthparts with adhesive paraglossae to capture small invertebrate prey. The species has been recorded across western North America from Canada to the United States.
Sunius rufipes
Sunius rufipes is a species of rove beetle in the family Staphylinidae. The genus Sunius belongs to the subfamily Staphylininae, a large and diverse group of predatory beetles characterized by their abbreviated elytra. The specific epithet "rufipes" refers to reddish legs, a common coloration pattern in this genus. Members of Sunius are typically found in various terrestrial habitats where they function as generalist predators.
Tachyporus atriceps
Tachyporus atriceps is a small rove beetle in the family Staphylinidae, subfamily Tachyporinae. It is native to Europe, North Africa, and western Asia, with introduced populations in eastern Canada. The species belongs to a genus of predatory beetles commonly found in vegetation and leaf litter. Specific ecological details for this species are sparse in available sources.
Tachyporus browni
Tachyporus browni is a species of rove beetle in the family Staphylinidae, described by Campbell in 1979. It belongs to the genus Tachyporus, a group of small to medium-sized predatory beetles commonly found in diverse terrestrial habitats. Very few observations of this species have been documented, with only four records in citizen science databases. Its specific biology and ecology remain poorly understood due to limited study.
Tachyporus canadensis
Tachyporus canadensis is a rove beetle in the family Staphylinidae, described by Campbell in 1979. It belongs to the large genus Tachyporus, which contains numerous species of small to medium-sized predatory beetles. The species is known from Canada and the United States.
Tachyporus lecontei
Tachyporus lecontei is a small rove beetle (Staphylinidae) described by Campbell in 1979. The species occurs across northern North America from Canada through the northern United States. Like other members of the genus Tachyporus, it is likely predatory, though specific ecological details remain poorly documented. The species is distinguished from congeners primarily by subtle morphological features requiring specialist examination.
Tenebroides americanus
Tenebroides americanus is a bark-gnawing beetle in the family Trogossitidae. The species occurs in eastern Canada, with confirmed records from Ontario and Québec. As a member of Trogossitidae, it belongs to a family of predatory beetles often associated with bark and wood habitats. The specific biology and ecology of this species remain poorly documented.
Tenebroides mauritanicus
cadelle, cadelle beetle
Tenebroides mauritanicus, the cadelle, is a cosmopolitan stored-product pest beetle in the family Trogossitidae. Adults are exclusively carnivorous, feeding on other insects including flour beetles and false powderpost beetles, while larvae consume grain products and transition to predatory behavior as they develop. The species is notable for its longevity, with adults surviving over 50 days and larvae over 120 days without food. It is the only member of Trogossitidae known to infest stored grain, causing significant damage through both direct feeding and by gnawing holes in packaging that expose food to other pests.
Thanasimus trifasciatus
three-banded checkered beetle
Thanasimus trifasciatus is a species of checkered beetle in the family Cleridae. It is found in North America, with records from Canada (Ontario and Québec) and the United States. The genus Thanasimus comprises predatory beetles commonly associated with bark beetles and other wood-boring insects. As a member of this genus, T. trifasciatus likely shares the general ecological habits of its congeners, though specific studies on this species are limited.
Trichodes peninsularis
checkered beetle
Trichodes peninsularis is a species of checkered beetle in the family Cleridae, first described by Horn in 1894. The species occurs in Central America and North America, with two recognized subspecies: T. p. basalis and T. p. horni. Field observations document adults visiting flowers of Isocoma tenuisecta, Gutierrezia microcephala, and Hymenothrix wislizeni in the southwestern United States.
Zuphioides americanum
Zuphioides americanum is a ground beetle species in the family Carabidae, subfamily Dryptinae. It is known from the United States and Canada. Like other members of the tribe Zuphiini, this species is presumed to be predatory, though specific ecological details remain poorly documented in published literature.