False Blister Beetles (Oedemeridae) - 76 Species, Identification & Facts

Heliocis repanda

Heliocis repanda (Heliocis repanda) is a species in the family Oedemeridae, commonly known as false blister beetles, belonging to the order Coleoptera (Beetles). It is classified within the subfamily Oedemerinae, tribe Asclerini, suborder Polyphaga,

Hypasclera floridana 0

Hypasclera floridana

Identification: last key couplet: Elytra entirely pale, without vittae Type Locality: One specimen. Biscayne Bay, Florida. (Schwarz.)

Hypasclera pleuralis 0

Hypasclera pleuralis

Identification: Each elytron with [a single] lateral vitta dark and contrasting with pale area not sure why this sp. hasn't been imaged given it's wide distribution.

Ischnomera cyanea

This beetle is about 12 mm long with bright iridescent blue/green elytra (wing cases), which sometimes gape to expose the body or wings. The top sections of its back legs are quite swollen. Adults are found on many flowers including those of Hogweed

Ischnomera puncticollis

Identification: Claws toothed at base; pronotum with 3 deep impressions arranged in a triangle and with a large central dark spot ( 3 )

Ischnomera ruficollis

Identification: all black except dull red pronotum; each elytron with 3 ridges Type Locality: "Missouri nr. Rocky Mts."

Wharf Borer

Nacerdes melanura

They fly to light, often to windows; thousands may suddenly appear in/around a building, disrupt business operations and be a nuisance. Larvae may infest pilings under wharves and under buildings near the water, boardwalks along the sea coast, wood f

Oedemera lurida

Length 5 to 8 mm. A generally long and slender species, which is a greyish sage green in colour. It often leaves its elytra (wing cases) agape. Active in bright sunshine in open habitats with plenty of wild flowers such as Hawthorn and umbellifers, w

Swollen-thighed Beetle

Oedemera nobilis

Length 8 to 10mm. The green elytra (wing covers) are pointed and gape apart. The male and female of this beetle can easily be told apart, as the male has large green bulges on its femora or thighs, while the female does not. The male is unmistakeable

Oxacis laevicollis 0

Oxacis laevicollis

Identification: Lectotype - head and thorax pale, elytra nearly black with suture narrowly paler. similar to Oxacis nitens which has a broad pale sutural area (emphasis added) instead of the very narrow pale sutural area of O. laevicollis . Type Loca

Oxacis nitens

Identification: Color pale testaceous with elytra brown, with narrow lateral margin pale, sutural area with pale central area, narrow at base and apex, varying to entirely brown (emphasis added). Type Locality: Arizona, Grand Canyon, mile 72, June 7,

Oxacis taeniata

Oxacis taeniata (Oxacis taeniata) is a species in the family Oedemeridae, commonly known as false blister beetles, belonging to the order Coleoptera (Beetles). It is classified within the subfamily Oedemerinae, tribe Asclerini, suborder Polyphaga, su

Oxacis trirossi

Identification: Thorax narrower in front, length to width ratio 5:4; surface of thorax swollen between punctures; prothorax immaculate or with a central stripe only ( 3 ) Det. E. G. Riley, 2009

Oxycopis howdeni

Identification: The fuscus color of this beetle makes it distinctive Type: Male, Tornillo Flat, Big Bend National Park, Tex., 3200 ft., May 12, 1959 (collected by Edward Becker and Henry F Howden).

Oxycopis mcdonaldi

may swarm around lights in great numbers and cause blistering if crushed on the skin

Oxycopis notoxoides

Identification: pronotum with 2 basal spots Det. Brad Barnd, 2025

Oxycopis suturalis

Identification: Holotype most common in FL, especially in the Florida Keys

Oxycopis thoracica

Oxycopis thoracica (Oxycopis thoracica) is a species in the family Oedemeridae, commonly known as false blister beetles, belonging to the order Coleoptera (Beetles). It is classified within the subfamily Oedemerinae, tribe Asclerini, suborder Polypha

Paroxacis interrita

Identification: Det. Brad Barnd, 2011 all specimens have been taken around lights

Polypria cruxrufa

First reported for the U.S. by Wickham (1898) and Townsend (1902) in Brownsville. ( 4 )

Rhinoplatia mortivallicola

Identification: Bluish black beetle with reddish-orange head produced in a long, distinct snout. Antennae filiform, and eleven-segmented. Thorax, antennae, tarsi, and anterior coxae also colored reddish-orange. Middle and hind coxae, all femora and t

Sparedrus aspersus

Identification: Det. M. A. Quinn, 2012 Adults come to lights (E.G. Riley, pers. comm., 2012)

Sparedrus depressus 0

Sparedrus depressus

Identification: Holotype specimens taken at Chisos Basin May 1‒8 by beating gray oak and at light, and at Tornillo Flat on May 12 by beating Acacia ; described from a single male specimen taken at Mexico City.

Vasaces elongatus

Identification: Second antennal segment nearly as long as third; body slender; eyes nearly entire; pronotum with nearly parallel sides; uniformly dark, metallic in color. Type Locality: Chisos Mtns of Big Bend NP, Brewster Co., TX

Xanthochroa erythrocephala

Identification: "Form slender, totally black, the front and occiput always and the middle of thorax sometimes yellow." (emphasis added) "Elytra without testaceous sutural markings; thorax black with central orange stripe" Type Locality: Georgia