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

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 Stiretrus anchorago - Anchor Stink Bug

Stink Bug - Stiretrus anchorago Anchor Stink Bug - Stiretrus anchorago Stink Bug - Stiretrus anchorago Stink Bug - Stiretrus anchorago Stink Bug - Stiretrus anchorago Stiretrus ? - Stiretrus anchorago Beetle - Stiretrus anchorago Unknown Beetle - Stiretrus anchorago
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 Stiretrus
Species anchorago (Anchor Stink Bug)
Other Common Names
Anchor Bug
Explanation of Names
Stiretrus anchorago (Fabricius 1775)
anchorago refers to the anchor-like dorsal pattern
7-9 mm(1)
Both markings and color are highly variable, but generally includes a variably-shaped dark central band running from the head toward the rear of the insect. The pale area on the right and left sides of the pronotum contain one to three dark spots (usually two). The dark color is dark blue to black. The light color may be white, pink, yellow, orange, or red.


profemora with strong tooth (unlike in Zicrona)
e. US to NM (NM-FL-ON-IA) to Panama(2)(3)(4)(BG data)
on a wide variety of herbaceous plants(1)
Adults feed on the larvae of beetles, butterflies, and moths, incl. many pest spp. (notably Mexican Bean Beetle and Japanese Beetle)(1)
Life Cycle
Eggs typically take seven days to hatch; nymphal phase (5 instars) takes 25-35 days(1)
See Also
note: scutellum is much narrower
- Range: sw. US to TX & KS
Zicrona americana Thomas
Print References
Neck RW. 1988. Prey preferences of a predaceous stink bug, Stiretrus anchorago (F.) (Hemiptera, Pentatomidae). Texas Journal of Science 40(3): 354-356.
Richman DB. 1977. Predation on the alfalfa weevil, Hypera postica (Gyllenhal), by Stiretrus anchorago (F.) (Hemiptera: Pentatomidae). Florida Entomologist 60: 192.
Richman DB, Whitcomb WH. 1978. Comparative life cycles of four species of predatory stink bugs. Florida Entomologist 61: 113-119.
Waddill V. Shepard M. 1974. Biology of a predaceous stink bug, Stiretrus anchorago, (Hemiptera: Pentatomidae). Florida Entomologist 57: 249-253.
Waddill V. 1975. A comparison of predation by the pentatomids, Podisus maculiventris (Say) and Stiretrus anchorago (F.), on the Mexican bean beetle, Epilachna varivestis Mulsant. Annals of the Entomological Society of America 68: 1023-27.
Internet References
Featured Creatures - Richman & Mead 2001
Works Cited
1.University of Florida: Featured Creatures
2.Pentatomidae (Heteroptera) of Honduras: a checklist with description of a new ochlerine genus
Arismendi N., Thomas D.B. 2003. Insecta Mundi 17: 219-236.
3.The Pentatomoidea (Hemiptera) of Northeastern North America
J.E. McPherson. 1982. Southern Illinois University Press.
4.Catalog of the Heteroptera, or True Bugs of Canada and the Continental United States
Thomas J. Henry, Richard C. Froeschner. 1988. Brill Academic Publishers.