Identification, Images, & Information
For Insects, Spiders & Their Kin
For the United States & Canada
Clickable Guide
Moths Butterflies Flies Caterpillars Flies Dragonflies Flies Mantids Cockroaches Bees and Wasps Walkingsticks Earwigs Ants Termites Hoppers and Kin Hoppers and Kin Beetles True Bugs Fleas Grasshoppers and Kin Ticks Spiders Scorpions Centipedes Millipedes

Upcoming Events

Interested in a 2022 BugGuide gathering in New Mexico?

Photos of insects and people from the Spring 2021 gathering in Louisiana, April 28-May 2

National Moth Week 2020 photos of insects and people.

Photos of insects and people from the 2019 gathering in Louisiana, July 25-27

Discussion, insects and people from the 2018 gathering in Virginia, July 27-29

Photos of insects and people from the 2015 gathering in Wisconsin, July 10-12

Photos of insects and people from the 2014 gathering in Virginia, June 4-7.

Previous events


Species Emesaya brevipennis

Thread-Legged Bug, Emesaya brevipennis - Emesaya brevipennis Thread-legged Assassin bug - Emesaya brevipennis emesine - Emesaya brevipennis Emesaya brevipennis Emesaya brevipennis Is this a Blatchley's? - Emesaya brevipennis Emesaya brevipennis? - Emesaya brevipennis Thread Legged Bug - Emesaya brevipennis?  - Emesaya brevipennis
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 Cimicomorpha
Family Reduviidae (Assassin Bugs)
Subfamily Emesinae (Thread-legged Bugs)
Tribe Metapterini
Genus Emesaya
Species brevipennis (Emesaya brevipennis)
Explanation of Names
Emesaya brevipennis (Say 1832)
3 sspp. in our area(1)
33-37 mm(2)
Covered with a silvery pubescence(2)
most of the US (MA-FL to IA-TX; CA) & ON to Brazil(1)(3)(4)
Often found outside of old buildings, in barns(2)
May-Dec in so.IL
Life Cycle
Two flights of adults per year, in a population studied in Illinois. Overwinters as eggs.
Print References
Hagerty A.M., Mcpherson J.E., Bradshaw J.D. (2001) Life history and laboratory rearing of Emesaya b. brevipennis (Heteroptera: Reduviidae) in Southern Illinois. Fla. Entomol. 84: 410-414 (Full text)
Works Cited
1.Catalog of the Heteroptera, or True Bugs of Canada and the Continental United States
Thomas J. Henry, Richard C. Froeschner. 1988. Brill Academic Publishers.
2.How to Know the True Bugs
Slater, James A., and Baranowski, Richard M. 1978. Wm. C. Brown Company.
3.Checklist of the Hemiptera of Canada and Alaska
Maw, H.E.L., R.G. Foottit, K.G.A. Hamilton and G.G.E. Scudder. 2000. NRC Research Press.
4.A monograph of the Emesinae (Reduviidae, Hemiptera)
Pedro W. Wygodzinsky. 1966. New York : [American Museum of Natural History].