Mayfly Species Neocloeon triangulifer

Mayflies

Caddisflies

Stoneflies

Taxonomic Navigation -?-

Kingdom Animalia (Animals)

» Phylum Arthropoda (Arthropods)

» Class Insecta (Insects)

» Order Ephemeroptera (Mayflies)

» Family Baetidae (Blue-Winged Olives)

» Genus Neocloeon

» Species triangulifer

This species is frequently studied by entomologists because its populations are entirely female, and they reproduce by parthenogenesis (Parthenogenesis: In some species of insects and other living things, such as the mayfly species Ameletus ludens, reproduction can take place without fertilization by a male. This process is called parthenogenesis.). Each specimen is a genetic clone of thousands of others, and there are several "lines" of clones. A 2006 study by three entomologists found from 7 to 25 different lines of clones in each of four streams, and they found some identical clones as far apart as 700km.

Where & When

Region: East

Time Of Year (?): Summer

This species may produce more than one brood per year.

Nymph Biology

Environmental Tolerance: Moderate to highly tolerant of pollution

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Jargon Defined:

Brood: When a species produces more than one generation per year, each one is called a brood.

Parthenogenesis: In some species of insects and other living things, such as the mayfly species Ameletus ludens, reproduction can take place without fertilization by a male. This process is called parthenogenesis.

Useful References:

Funk DH; Jackson JK; Sweeney BW. 2006. Taxonomy and genetics of the parthenogenetic mayfly Centroptilum triangulifer and its sexual sister Centroptilum alamance (Ephemeroptera: Baetidae). Journal of the North American Benthological Society 25: 417-429.

Knopp, Malcolm and Robert Cormier. 1997. Mayflies: An Angler's Study of Trout Water Ephemeroptera . The Lyons Press.