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Species Stiretrus anchorago - Anchor Stink Bug

Stink Bug - Stiretrus anchorago Anchor Stink Bug - Stiretrus anchorago Anchor stink bug - Stiretrus anchorago Anchor Stink Bug - Stiretrus anchorago Stiretrus anchorago Maryland Bug - Stiretrus anchorago Stiretrus anchorago (Fabricius) - Stiretrus anchorago Black and White Stink Bug - Stiretrus anchorago
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 Asopinae (Predatory Stink Bugs)
Genus Stiretrus
Species anchorago (Anchor Stink Bug)
Other Common Names
Anchor Bug, ASB
Synonyms and other taxonomic changes
Stiretrus anchorago (Fabricius)
Orig. Comb: Cimex anchorago Fabricius 1775
Explanation of Names
anchorago refers to the anchor-like dorsal pattern that is one among many patterns
Size
7-9 mm(1)
Identification
Both markings and color are highly variable, but distinguishable from other predatory pentatomids by the large U-shaped scutellum, which almost reaches to the tip of the abdomen (2)

Nymphs:

profemora with strong tooth (unlike in Zicrona)
Range
e. US to NM (NM-FL-ME-IA) to Panama(3)(2)(4)(BG data)
Habitat
on a wide variety of herbaceous plants(1)(2)
Season
mostly Apr-Oct (slightly longer in Gulf states) (BG data), appears to be bivoltine(2), with a greater abundance in the fall(5)
Food
feeds on the larvae of beetles, butterflies, and moths, incl. many pest spp. (notably Mexican Bean Beetle and Japanese Beetle)(1)(2)
One of the most frequently encountered predators of the bordered patch (Chlosyne lacinia). Most often attacking third and fourth instar larvae, these bugs would sometimes almost completely destroy a brood.(6)
apparently a frequent predator of monarch larvae, at least in the se US, the following records from FL-VA, & e TX:
Life Cycle
Eggs typically take seven days to hatch; nymphal phase (5 instars) takes 25-35 days(1), appears to overwinter as adults(2)
nymphs and adults are active larval/nymph predators:



parasitized by the widely dist. tachinid fly Cylindromyia fumipennis (Bigot, 1878) (2)
See Also
note: scutellum is narrower and shorter, also no tooth on the front femora
- Range: sw. US to TX & KS
Zicrona americana Thomas
Print References
Drummond, III, B.A., G.L. Bush and T.C. Emmel. 1970. The biology and laboratory culture of Chlosyne lacinia Geyer (Nymphalidae). Journal of the Lepidopterists' Society 24(2): 135-142.(6)
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(3): 113-119. (7)
Waddill V., Shepard M. 1974. Biology of a predaceous stink bug, Stiretrus anchorago, (Hemiptera: Pentatomidae). Florida Entomologist 57(3): 249-253. (8)
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
Pentatomoidea - Dr. David Rider, North Dakota State University
Works Cited
1.University of Florida: Featured Creatures
2.The Pentatomoidea (Hemiptera) of Northeastern North America
J.E. McPherson. 1982. Southern Illinois University Press.
3.Pentatomidae (Heteroptera) of Honduras: a checklist with description of a new ochlerine genus
Arismendi N., Thomas D.B. 2003. Insecta Mundi 17: 219-236.
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.
5.iNaturalist
6.The biology and laboratory culture of Chlosyne lacinia Geyer (Nymphalidae).
Drummond, III, B.A., G.L. Bush and T.C. Emmel. 1970. Journal of the Lepidopterists' Society 24(2): 135-142.
7.Comparative life cycles of four species of predatory stink bugs.
Richman DB, Whitcomb WH. 1978. Florida Entomologist 61(3): 113-119.
8.Biology of a predaceous stink bug, Stiretrus anchorago, (Hemiptera: Pentatomidae).
Waddill, V., M. Shepard. 1974. Florida Entomologist 57(3): 249-253.