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For Insects, Spiders & Their Kin
For the United States & Canada
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Upcoming Events

Discussion of 2018 gathering

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.

Photos of insects and people from the 2013 gathering in Arizona, July 25-28

Photos of insects and people from the 2012 gathering in Alabama

Photos of insects and people from the 2011 gathering in Iowa

Photos from the 2010 Workshop in Grinnell, Iowa

Photos from the 2009 gathering in Washington


Species Picromerus bidens

Stinkbugs - Picromerus bidens - male - female Stinkbug - Picromerus bidens Asopinae (predatory stink bug) sp.? - Picromerus bidens pentatomid - Picromerus bidens Mating stink bugs and caterpillar meal?! - Picromerus bidens - male - female Predatory Stink Bug nymph - Picromerus bidens Picromerus bidens? - Picromerus bidens - male - female immature stink bug in wild blueberry - Picromerus bidens
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 Asopinae (Predatory Stink Bugs)
Genus Picromerus
Species bidens (Picromerus bidens)
Other Common Names
Spiked Shieldbug (UK)
Explanation of Names
Picromerus bidens (Linnaeus 1758)
11-14 mm(1)
large laterally-projecting spine at humeral angle; tibiae typically tricolored: brown at the "knee", pale in the middle, and reddish apically
ne NA: adventive in ne. US (ME-NY) & adjacent Canada (NS-ON); native to the Palaearctic (1)(2)(3)(4)
mostly: June-Sept (BG data)
caterpillars, esp. webworms and tent caterpillars(2)
Life Cycle
gregarious during first two instars and phytophagous, but gradually disperses in later instars and becomes predacious (1)
earliest NA record: ME 1932(1)
potentially useful predator of certain leaf-feeding insects (e.g., pine sawfly larvae)(4)
Internet References