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Infraorder Gerromorpha - Semiaquatic Bugs

Common Water Strider?  Two of 'em - Trepobates subnitidus - male - female water strider - Aquarius remigis Water Strider - Aquarius Pond Skater - Aquarius remigis - male water strider in Ozark creek water strider water strider Microvelia americana?
Classification
Kingdom Animalia (Animals)
Phylum Arthropoda (Arthropods)
Class Insecta (Insects)
Order Hemiptera (True Bugs, Cicadas, Hoppers, Aphids and Allies)
Suborder Heteroptera (True Bugs)
Infraorder Gerromorpha (Semiaquatic Bugs)
Numbers
>2,100 spp. in ~160 genera of 8 families worldwide(1) (one fam. is so. African, one is Indo-Pacific); ca. 110 spp. in 6 families in our area
Identification
Good practical keys provided in(2)(3)(4)(5)
Habitat
water surface or riparian habitats close to the freshwater edge; some in open ocean (the only truly marine insects)
Food
living or dead arthropods(6)
Remarks
Most are skaters (slow walkers on surface film)(6)
Internet References
(7)