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Infraorder Gerromorpha - Semiaquatic Bugs

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What do we know about the phylogeny of the semi-aquatic bugs (Hemiptera: Heteroptera: Gerromorpha)?
By Damgaard J.
Entomologica Americana 118: 81-98, 2012
Full text [not free... yet]

Cladistics, historical biogeography and a check list of gerrine water striders (Gerridae) of the World
By N.M. Andersen
Steenstrupia 21: 93–123, 1995

Evolution of the semi-aquatic bugs (Hemiptera: Heteroptera: Gerromorpha) with a re-interpretation of the fossil record
By Jakob Damgaard
Acta Entomologica Musei Nationalis Pragae, 48(2): 251-268, 2008
Full text
The Gerromorpha probably extends back into the Triassic. All families were present in the Mesozoic, and most (all?) extant subfamilies were also present at that time.

Systematics of the Genus Rhagovelis Mayr (Heteroptera: Veliidae) in the Western Hemisphere (Exclusive of the angustipes complex)
By Dan A. Polhemus
Entomological Society of America, 1997
Great resource for Rhagovelia. Covers 141 species (of which 11 occur in U.S.) Genus Trochopus now in Rhagovelia.

The Semiaquatic and Aquatic Hemiptera of California
By A. S. Menke (Editor)
University of California Press, 1979
PDF available here:

Survey of the North American species of Merragata
By C. J. Drake
The Ohio Journal of Science, 1917
Full Text here:

The Marine Insect Halobates (Heteroptera: Gerridae): Biology, Adaptations, Distribution, and Phylogeny
By Nils Moller Andersen & Lanna Cheng
Oceanography and Marine Biology: An Annual Review, 2004
PDF version.

Phylogeny and taxonomy of water striders, genus Aquarius Schellenberg (...), with a new species from Australia
By Andersen N.M.
Steenstrupia 16: 37-81, 1990

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