Environ. Horticulture, Pears, Cherries, and Viticulture
University of California
Environ. Horticulture, Pears, Cherries, and Viticulture

Identification

On this page and links on the left, see pictures of BMSB, fruit damage, and host trees. If, after reviewing these pages, you think you have a Brown marmorated stink bug at your location, please report it:

Report Finds

For more information visit:

Fact Sheet - (PDF 600kb) - Identification, damage, and tree hosts - July 2015 (UC ANR)
Pest Alert - Brown Marmorated Stink Bug Identification (UC IPM)
Look-Alike Insects - (StopBMSB.org)


The brown marmorated stink bug is most similar in appearance to the rough stink bug (Brochymena spp.); The pictures below illustrate the differences.

(click pictures for enlargements)

Rough stink bug vs BMSB
Rough stink bug vs BMSB

Rough stink bug vs BMSB, by Chris Hedstrom, Oregon State Univ.
Rough stink bug vs BMSB, by Chris Hedstrom, Oregon State Univ.

Other similar bugs include the consperse stink bug (Euschistus conspersus), squash bug (Anasa tristis), and leaffooted bug (Leptoglossus phyllopus). The distinguishing feature of the BMSB at all life stages is white banding on the antennae and usually on the legs also. Compare the first picture below with the three other true bugs.

Brown marmorated stink bug (photo: njaes.rutgers.edu).
Brown marmorated stink bug (photo: njaes.rutgers.edu).
 

Consperse stink bug
Consperse stink bug
Squash bug
Squash bug

Leaffooted plant bug
Leaffooted plant bug

 

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