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For Insects, Spiders & Their Kin
For the United States & Canada
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Species Aquarius remigis

Water Strider - Aquarius remigis water strider - Aquarius remigis Large Water Strider - Aquarius remigis - female water strider sp. - Aquarius remigis Aquarius? - Aquarius remigis Water Strider - Aquarius remigis Water Strider ~13mm - Aquarius remigis 5-Legged Water Strider - Aquarius remigis - male
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 Gerromorpha (Semiaquatic Bugs)
Superfamily Gerroidea
Family Gerridae (Water Striders)
Subfamily Gerrinae
Genus Aquarius
No Taxon (remigis group)
Species remigis (Aquarius remigis)
Synonyms and other taxonomic changes
Gerris remigis Say, 1832
Gerris nyctalis Drake & Hottes, 1925
Explanation of Names
Aquarius remigis (Say 1832)
remigis 'rower'
11.5-16 mm(1)
hind tibia at least 4 times length of first hind tarsal segment; connexival spines prominent; pronotum dull; first antennal segment subequal to combined length of antennal segments two and three; greatest width across mesoacetabula (middle leg "hip sockets") more than or equal to 0.25 times body length

adults almost always wingless(2)
throughout NA, but uncommon across the se US - Map (1)(3); the most common and widespread water strider of our fauna (Drake & Harris 1928)

see remarks on species group
on ponds and lakes in the west and on rivers and streams in the east(4)
Mosquito larvae and other insects.
Faces a conflict when deciding which habitat refuge to use when responding to predators. Predation by sunfish (Lepomis) means these bugs need to retreat to the stream banks. But they must move away from those banks when avoiding fishing spiders (Dolomedes).
See Also
A. conformis: antennomere 1 distinctly longer than antennomeres 2 & 3 combined; greatest width across mesoacetabula (middle "hip sockets") <0.25 times body length
Gerris: body <10.7 mm, connexival spines not prominent, hind tibia less than 3.3 times length of metatarsomere 1
Limnoporus: antennomere 1 <0.8 combined length of antennomeres 2 & 3
Print References
Drake, C.J. and Harris, H.M. (1928) Concerning Some North American Water-Striders with descriptions of three new species. (Full PDF)
Works Cited
1.Identification manual for the aquatic and semi-aquatic Heteroptera of Florida
Epler J.H. 2006. FL Dept. Env. Prot., Tallahassee, FL. 186 pp.
2.Insects: Their Natural History And Diversity: With a Photographic Guide to Insects of Eastern North America
Stephen A. Marshall. 2006. Firefly Books Ltd.
3.Global Biodiversity Information Facility (GBIF)
4.How to Know the True Bugs
Slater, James A., and Baranowski, Richard M. 1978. Wm. C. Brown Company.