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Pterostichus madidus, commonly known as the black clock beetle, is a species of ground beetle native to Europe. [1] [2] The black clock beetle typically grows between 14–20mm in length, and is black in colouration, with legs that are usually red, reddish brown, or black. It can be found most abundantly in summer, and breeds during the autumn.
Ground beetles are a large, cosmopolitan family of beetles, [2] the Carabidae, with more than 40,000 species worldwide, around 2,000 of which are found in North America and 2,700 in Europe. [3] As of 2015, it is one of the 10 most species-rich animal families.
Calosoma is a genus of large ground beetles that occur primarily throughout the Northern Hemisphere, and are referred to as caterpillar hunters or caterpillar searchers. Many of the 167 species are largely or entirely black, but some have bright metallic coloration. They produce a foul-smelling spray from glands near the tip of the abdomen.
Pterostichus melanarius, the rain beetle, [1] is a type of carabid (ground beetle) of the genus Pterostichus. It is native to Europe but is increasingly found in North America after being introduced to the region in the 1920s. It is a predatory beetle that eats other invertebrates, which makes it a valuable pest control agent in agricultural ...
Calosoma macrum is a species of ground beetle in the subfamily Carabinae. It was described by John Lawrence LeConte in 1853. The species is 24–30 millimetres (0.94–1.18 in) long, black, and lives at an elevation of 1,000 to 1,600 metres (3,300 to 5,200 ft). [1]
They are also known as ground beetles, and are oval shaped and elongated. They are black with a green metallic hue and vertical stripes running down their backs. The length of a fully grown beetle ranges from 27 to 31 mm. [2] They have three pairs of legs and two pairs of wings. The outer wings are greatly degenerated, making them unable to fly.
Harpalus pensylvanicus is a species of ground beetle in the subfamily Harpalinae. [1] It is found throughout North America. It was described by Degeer in 1774. [1] The adults of the species are shiny black on the top, reddish brown underneath, and the elytra have lines. The larvae are black with a reddish head and the body is tapered with two ...
Other lady beetles feed on scale insects, whitefly and mealybugs. [172] If normal food sources are scarce, they may feed on small caterpillars, young plant bugs, or honeydew and nectar. [173] Ground beetles (Carabidae) are common predators of many insect pests, including fly eggs, caterpillars, and wireworms. [174]