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Home » Guide » Arthropods (Arthropoda) » Hexapods (Hexapoda) » Insects (Insecta) » True Bugs, Cicadas, Hoppers, Aphids and Allies (Hemiptera) » True Bugs (Heteroptera) » Pentatomomorpha » Pentatomoidea » Stink Bugs (Pentatomidae) » Pentatominae » Carpocorini » Euschistus » Dusky Stink Bug (Euschistus tristigmus)

Species Euschistus tristigmus - Dusky Stink Bug

Classification · Explanation of Names · Numbers · Size · Identification · Range · Food · See Also · Print References · Works Cited

Stink Bugs - Euschistus tristigmus - male - female

Euschistus tristigmus tristigmus - Euschistus tristigmus

Id help needed - stink bug - Euschistus tristigmus

Dusky Stink Bug - Dorsal - Euschistus tristigmus

Pentatomidae, Dusky Stink Bug, dorsal - Euschistus tristigmus

Classification

Kingdom Animalia (Animals)

Phylum Arthropoda (Arthropods)

Subphylum Hexapoda (Hexapods)

Class Insecta (Insects)

Order Hemiptera (True Bugs, Cicadas, Hoppers, Aphids and Allies)

Suborder Heteroptera (True Bugs)

Infraorder Pentatomomorpha

Superfamily Pentatomoidea

Family Pentatomidae (Stink Bugs)

Subfamily Pentatominae

Tribe Carpocorini

Genus Euschistus

Species tristigmus (Dusky Stink Bug)

Explanation of Names

Euschistus tristigmus (Say 1832)

tristigmus 'three-spotted' (refers to the dark spots on venter)

Numbers

3 forms exist that used to be treated as subspecies(1)

Size

E. t. tristigmus 8‒11 mm, E. t. luridus 10‒12 mm(1)

Identification

Abdomen ventrally with 1‒4 black spots down midline (spots obsolete in some individuals)(2):

highly variable, often impossible to tell apart from E. servus from above

E. t. luridus is more northern and has the humeri rounded, in the nominate ssp. (se.US) humeri acute to spinose(2)

Range

transcontinental, Canada to Guatemala; in our area, BC‒NF to OR‒UT‒SD‒TX‒FL(3)

Food

extremely polyphagous(1); occasionally predaceous(4)

See Also

Podisus maculiventris

Print References

McPherson J.E. (1975) Life history of Euschistus tristigmus tristigmus (Hemiptera: Pentatomidae) with information on adult seasonal dimorphism. Ann. Ent. Soc. Am. 68: 333‒334.

Works Cited

1.	The Pentatomoidea (Hemiptera) of Northeastern North America J.E. McPherson. 1982. Southern Illinois University Press.

2.	The Heteroptera (Hemiptera) of North Dakota I: Pentatomomorpha: Pentatomoidea Rider D.A. 2012. Great Lakes Entomol. 45: 312‒380.

3.	A distributional synopsis of the Pentatomidae (Heteroptera) north of Mexico, including new state and provincial records Rider, D.A. and Swanson, D.R. 2021. Zootaxa, 5015(1), 1–69.

4.	An updated synopsis of the Pentatomoidea (Heteroptera) of Michigan Swanson D.R. 2012. Great Lakes Entomologist 45: 263-311.

Contributed by Brad Barnd on 28 June, 2007 - 9:07pm
Additional contributions by cotinis, Beatriz Moisset, Mike Quinn, Vox Sciurorum, v belov
Last updated 27 June, 2024 - 5:20pm

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