Anthocomus equestris

Soft-winged Beetle
Anthocomus equestris

Identification: Exotic from Eurasia, date unknown.

Soft-winged Beetle Anthocomus equestris female. May 10, 2017 Leamington, Ontario.
Soft-winged Beetle Anthocomus equestris female. May 10, 2017 Leamington, Ontario.

Head: Black with a blue-green sheen.
Antenna: Black with about 9 to 10 segments, serrated. Sometimes segments 1 to 3 or 4 are paler.
Thorax (pronotum): Black with a blue-green sheen, rounded without a ridge on outside edges. Sometimes with white along base edge. Black V-shape patch at wing cover base, center (scutellum).
Wings: Wing covers red. Wide black stripe across wings past mid-wing (elytra) variable, sometimes not reaching side edges or not reaching center line between each wing. Wing covers slightly shorter than abdomen. Male wings indented at center at tips; beneath the indent is a pocket of glands and a tuft of hair.
Legs: Mostly dark, with varying amounts of yellowish at tips of thighs (femora) and streaks on shins (tibiae). Hind leg usually darker. Feet dark.
Abdomen: Black. Female abdomen extending into a cone-shape with white line at tip. Male abdomen tip much wider and shorter.

Size: 2.5 to 3 mm long

Habitat: Prefers to live in buildings and houses and yards.

Food: Unknown, but has been found on roses.

Flight Time: April to June

Life Cycle: Females feed on male glands located at tip of wings (elytra) before mating. Nothing else is known about their life cycle in North America.

Comments: In Ontario and east to North Carolina.

Synonyms: Fabricius 1781
Malachius equestris, Celidus bipunctatus, Celidus equestris, Malachius bipunctatus, Malachius herbsti, Malachius quadripustulatus

Insects Their Natural History and Diversity by Marshall.
Beetles of Eastern North America, 2014 by Evans