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Ephemeroptera was defined by Alpheus Hyatt and Jennie Maria Arms Sheldon in 1890–1. [44] [45] The taxonomy of the Ephemeroptera was reworked by George F. Edmunds and Jay R Traver, starting in 1954. [46] [47] Traver contributed to the 1935 work The Biology of Mayflies, [48] and has been called "the first Ephemeroptera specialist in North ...
Ephemera danica can reach an imago size of 15–20 mm (0.6–0.8 in) in males, while females are larger, reaching 16–25 mm (0.6–1.0 in). This mayfly, with its characteristic markings and three tails (), is the most commonly seen of British Ephemeridae.
Ephemeroptera: Family: Ephemeridae: Genus: Ephemera Linnaeus, 1758: Ephemera simulans male. Ephemera is a genus of mayfly in the family Ephemeridae. It contains the ...
Ephemera vulgata is found throughout most of Europe. It mostly breeds in sluggish rivers and still waters such as ponds. This species is in decline, probably because of pollution of waterways by pesticides and heavy metals, and because the adult insects are disorientated by light pollution.
Baetidae is a family of mayflies with about 1000 described species in 110 genera distributed worldwide. [1] These are among the smallest of mayflies, adults rarely exceeding 10 mm in length excluding the two long slender tails and sometimes much smaller, and members of the family are often referred to as small mayflies or small minnow mayflies.
Leptophlebiidae is a family belonging to the Ephemeropterans that are commonly known as the prong-gilled mayflies or leptophlebiids.It is the only family in the superfamily Leptophlebioidea. [1]
Ephemeroptera: Family: Caenidae: Genus: Caenis Stephens, 1835: Caenis is a genus of mayflies. They are very small in size, sometimes with a body of only an 1/8 of an ...
Nymph. The mature adult stage of Hexagenia limbata can be as much as 27 cm (10.6 in) long. The females tend to be slightly larger than the males but have smaller eyes. The forewings are long and membranous while the hind wings are much smaller and have dark margins.