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For the United States & Canada
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Species Lethocerus medius

Big brown bug - Arizona Chiricahua Mountain - Lethocerus medius lethocerus americanus - Lethocerus medius Lethocerus species - Lethocerus medius Giant Water Bug? - Lethocerus medius Lethocerus medius? - Lethocerus medius Lethocerus medius? - Lethocerus medius Arizona True Bug - Lethocerus medius Lethocerus medius? - Lethocerus medius
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 Nepomorpha (Aquatic Bugs)
Superfamily Nepoidea
Family Belostomatidae (Giant Water Bugs)
Subfamily Lethocerinae
Genus Lethocerus
Species medius (Lethocerus medius)
Other Common Names
Banded-femora Water Bug
Explanation of Names
Lethocerus medius (Guérin-Méneville 1857)
♂ 49-58 mm, ♀ 62-63 mm(1)
Legs banded. Eyes closer together than they are wide, and with rear margins roughly straight across as viewed from above (not distinctly slanted). Very similar to L. uhleri (ranges overlap in e. TX), differs in basal segment of hind tarsus wider, wider than interocular distance; metatibia more obviously curved on outer margin (nearly straight in L. uhleri)(2)
AZ to c. TX to Panama; W. Indies - Map (1)(3)
in the northernmost part of its range, desert environments (forests in the south)(1)
Works Cited
1.Taxonomic revision of the subfamily Lethocerinae Lauck & Menke (Heteroptera: Belostomatidae)
Perez-Goodwyn P.J. 2006. Stuttg. Beitr. Naturkd., A (Biologie) 695: 1–71.
2.The semiaquatic and aquatic Hemiptera of California
Menke, Arnold S. (editor). 1979. Bulletin of the California Insect Survey, University of California Press, xi + 166 pp.
3.Global Biodiversity Information Facility (GBIF)