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Family Aradidae - Flat Bugs

My brother (who rides his bike everywhere) found this bug in his room on the floor. it's flat & wooden looking - Aradus robustus Insect ID...  - Mezira Aradus - Aradus falleni bug - Aradus robustus Portland Bioblitz 2012 PDX26 - Aradus fuscomaculatus Plant Bug - Aradus uniannulatus Aneurus borealis Heteroptera. Aradidae? - Aneurus
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
Family Aradidae (Flat Bugs)
127 spp. (of which 84 Aradus spp.) in 12 genera in our area, arranged in 5 subfamilies(1)(2); >1900 spp. in 230 genera of 8 subfamilies worldwide(3)
Overview of our fauna (* –taxa not yet in the guide)
Subfamily Aradinae Aradus · Quilnus
3-11 mm
Oval and very flat bugs found under or on bark. Abdomen extends beyond wings. Antennae and beak have four segments. Lack ocelli.
Key to genera and the commonest (mostly ne.) species is provided in (4); to spp. of Canadian fauna, in(5); to Florida species, by Whelan et al.
Many nw. species imaged at(6)
worldwide; most diverse in Australia(3)
mostly under bark, on fallen logs & tree limbs, bracket fungi
mycelia or fruiting bodies of wood-rotting fungi(3)
Life Cycle
many bark-dwelling spp. are gregarious(3)
these bugs lack the straight piercing/sucking mouthparts, and instead the mouthparts are "stored" inside the head in a coiled fashion.
Print References
Kormilev, N.A. and R.C. Froeschner. 1987. Flat Bugs of the World. A synonymic List (Heteroptera: Aradidae). Entomography 5: 1-246.(2)
Works Cited
1.State records, confirmations, and habitats of Aradidae (Hemiptera: Heteroptera) from Louisiana, U.S.A.
S.J. Taylor & S.A. Gil. 2009. Florida Entomologist 92(2): 199-207.
2.Taylor S. (2002-2011) Aradidae (Flatbugs)
3.Zoological catalogue of Australia: Hemiptera: Heteroptera (Pentatomomorpha)
Cassis G., Gross G.F. 2002. CSIRO Publishing, 751 pp.
4.How to Know the True Bugs
Slater, James A., and Baranowski, Richard M. 1978. Wm. C. Brown Company.
5.The Aradidae of Canada (Hemiptera: Aradidae)
Matsuda R. 1977. The insects and arachnids of Canada, Pt. 3. Ottawa: Agriculture Canada. 116 pp.
6.Photo gallery of the Spencer Entomological Collection