Brochymena punctata

Van Duzee, 1909

rough stink bug

Brochymena punctata is a of rough stink bug native to North America. Like other members of its , it exhibits cryptic coloration resembling tree bark and lichen. The species is often confused with the brown marmorated stink bug, though it is harmless to humans and agriculture. It overwinters as an , typically remaining outdoors under loose bark rather than entering structures.

Pronunciation

How to pronounce Brochymena punctata: /bɹoʊkaɪmɛnə pʌŋktɑtə/

These audio files are automatically generated. While they are not always 100% accurate, they are a good starting point.

Identification

Distinguished from the brown marmorated stink bug (Halyomorpha halys) by: (1) without white bands on the last two segments, and (2) fine teeth present along the leading edge of the pronotum. The brown marmorated stink bug has banded antennae and a smooth pronotum edge. Brochymena punctata also lacks the distinctive black and white-banded legs seen in late-instar nymphs of H. halys.

Habitat

Associated with trees and shrubs; found on bark where its cryptic coloration provides concealment. Overwinters under loose bark or in other sheltered outdoor locations. may be observed on warm, sunny winter days on fences, sidewalks, or other contrasting surfaces.

Distribution

North America. Specific range details within North America are not well documented, but the occurs within the broader distribution of the .

Seasonality

are active in spring and fall during from and entry into hibernation. May be observed on warm winter days when they become temporarily active.

Diet

Suspected to feed on sap of trees and shrubs; possibly opportunistically predatory or scavenging on other insects, though this has not been confirmed.

Life Cycle

laid in small clusters on twigs of trees. Nymphs progress through four instars before reaching adulthood. Development from egg to is lengthy, resulting in one annually in temperate climates. Overwinters as adult.

Behavior

fly well and may aggregate under loose bark for . Typically remains outdoors rather than entering human structures. Exhibits cryptic , blending with bark substrate.

Ecological Role

Prey for various including the sand wasp Bicyrtes quadrifasciata, birds, and fence lizards. are parasitized by platygastrid Trissolcus brochymenae and Telenomus sp., and eupelmid wasp Anastatus reduvii. Subject to by feather-legged tachinid flies in the Trichopoda.

Human Relevance

Not a pest; does not damage crops or enter structures in significant numbers. Frequently mistaken for the brown marmorated stink bug, leading to unnecessary concern.

Similar Taxa

Halyomorpha halys (brown marmorated stink bug)Easily confused due to general body shape and size; distinguished by white-banded , smooth pronotum edge, and banded legs in nymphs.
Other Brochymena species-level identification within Brochymena is difficult without microscopic examination of dead specimens; many species share similar bark-mimicking appearance.

Misconceptions

Frequently mistaken for the and nuisance-causing brown marmorated stink bug. Unlike that , Brochymena punctata does not aggregate on buildings or become a household pest.

More Details

Subspecies

Two recognized: Brochymena punctata punctata Van Duzee, 1909 (nominate) and Brochymena punctata pallida Blatchley, 1926.

Cold tolerance

Has been observed to survive freezing temperatures for extended periods; specimens frozen for approximately one week recovered when warmed.