Siphlonurus occidentalis

(Eaton, 1885)

primitive minnow mayfly

Siphlonurus occidentalis is a of primitive minnow mayfly in the Siphlonuridae. It belongs to a group of mayflies considered evolutionarily basal within the order Ephemeroptera. The species has a broad distribution spanning from Central America through North America, including Alaska and northern Canada. Like other members of its family, it likely inhabits cool, flowing waters and exhibits the characteristic aquatic nymph and terrestrial life stages typical of mayflies.

Siphlonurus occidentalis by JerryFriedman. Used under a CC BY-SA 3.0 license.

Pronunciation

How to pronounce Siphlonurus occidentalis: /ˌsɪfləˈnjʊərəs ˌɒksɪˈdɛnˌtælɪs/

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Distribution

Central America; North America including southwestern United States, western United States, northern Canada, Alaska, and all of Mexico. GBIF records confirm presence in the Nearctic region.

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Taxonomic Note

Siphlonurus occidentalis was described by Eaton in 1885. The Siphlonurus represents one of the more primitive lineages within Ephemeroptera, retaining ancestral characteristics of the order.