In this figure, N refers to the number of species tested. The error bar is the SE of species means.
Movie links to these behaviors:
Swim-skim (skimming on the surface with lateral oscillations of the abdomen, as used in swimming)
4-leg skim by stoneflies; many mayflies do same thing
Flying (after jumping takeoff from water)
Marden, J.H., B.C. O'Donnell, M.A. Thomas, and J.Y. Bye. 2000. Surface-skimming stoneflies and mayflies: the taxonomic and mechanical diversity of two-dimensional aerodynamic locomotion. Physiological and Biochemical Zoology 73, 751-764.
Thomas, M.A., K.A. Walsh, M.R. Wolf, B.A. McPheron,
and J.H. Marden. 2000. Molecular phylogenetic analysis of evolutionary
trends in stonefly wing structure and locomotor behavior. Proceedings
of the National Academy of Science 97:13178-13183. (A figure in this
paper maps these behaviors onto a phylogenetic tree of the Plecoptera)
Marden, J.H. 2008. Evolution and physiology of
flight in aquatic insects. In: Aquatic Insects: Challenges to
Populations, ed. J. Lancaster. CABI Press.
Thomas, M.A., K.A. Walsh, M.R. Wolf, B.A. McPheron, and J.H. Marden. 2000. Molecular phylogenetic analysis of evolutionary trends in stonefly wing structure and locomotor behavior. Proceedings of the National Academy of Science 97:13178-13183.
Additional relevant materials
A teaching exercise using these data is also available.
A link to an instructor's version can be obtained by emailing me at email@example.com.
An important movie link that is not contained in any of
the above links shows gill
flapping by mayfly, stonefly, and damselfly nymphs (Ephemeroptera, Plecoptera, Odonata). Here's another more modern movie of gill flapping by a green drake mayfly nymph (Ephemera guttulata).
A 2012 paper describing a trace fossil made by what appears to be a 310MY surface skimmer is here. A movie showing surface skimming stoneflies moving from water onto a moist sediment shoreline goes with this paper.