Variegated Mud-loving Beetles (Heteroceridae) - 36 Species, Identification & Facts

Augyles auromicans

Identification: pronotum with median pale stripe Hypermandibulate males unknown

Heterocerus fenestratus

Only two species in this group are normally found inland. Heterocerus fenestratus has the two orange marks on the elytra, each side of the suture, reaching the front margin of the elytra. In H. marginatus, the other inland species, these marks are ab

Heterocerus intermuralis

Identification: Elytra grayish-brown, without reddish hue; dominated by pale markings that are highly variable in shape and definition and only vaguely trifasciate

Heterocerus mexicanus

These beetles show up in numbers, one night, then none for years. … margarethe brummermann, 30.x.2016

Heterocerus mollinus

H. mollinus is the most common spp. of Heterocerus in N. Amer. Thousands of specimens can be collected in light traps placed near muddy river banks.

Heterocerus pallidus

Identification: Elytra often testaceous, but may be dark brown, pronotum often with wide pale margins; some males hypermandibulate. Elytra dominated by highly variable pale markings; striae absent.

Heterocerus sandersoni

Identification: conspicuous longitudinal striations on the elytra

Heterocerus selanderi

Identification: Small with faint fascia on the elytra. Very easy to confuse with Tropicus .

Heterocerus texanus

Identification: Det. Jonas G. King, 2012 Type Locality: Sabinal, Uvalde County, Texas

Heterocerus unicus

Identification: Basal margin of elytra well defined by a bright pale area that at times covers most of the margin. Type Locality: 9 mi. south of La Paz, Baja Calif., Mexico.

Tropicus minutus 0

Tropicus minutus

Identification: Type - MCZ, Harvard tiny thing i see every once in a while at my porch lights; will post pics (=v=) Type Locality: Luling, TX.

Tropicus niger 0

Tropicus niger

Identification: Uniformly brown to black. Genitalia distinctive. Tropicus nigrellus King and Lago, 2012 may be a synonym of this species, as illustrations of the genitalia are remarkably similar. Both species were described from specimens collected i

Tropicus pusillus

Identification: the elytra are orange laterally and share a faint medial brown stripe that covers about one-third of the surface; easily distinguished from other se.US heterocerids by color pattern one of the most common and widespread heterocerids i