Caudatella

Edmunds, 1959

Species Guides

Caudatella heterocaudata

Caudatella is a of mayflies in the Ephemerellidae, established by Edmunds in 1959. within this genus are primarily distributed in western North America, with documented occurrences in Montana and other regions. The genus has been subject to taxonomic revision, particularly regarding such as C. heterocaudata and C. hystrix. Larval stages are aquatic and associated with stream .

Pronunciation

How to pronounce Caudatella: //ˌkaʊdəˈtɛlə//

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Identification

Larvae of Caudatella can be distinguished from related using morphological characteristics detailed in published identification keys. Specific diagnostic features include caudal filament structure and other larval characteristics that differentiate within the genus. and have been described for some species, including C. edmundsi.

Habitat

Stream in western North America; larvae are aquatic and associated with running water environments. Specific microhabitat preferences have been observed in Montana streams for C. edmundsi.

Distribution

Western North America, including Montana, USA. Specific distribution records exist for C. edmundsi and other , with type localities documented in the western United States.

Seasonality

have been collected in June in Montana, suggesting late spring to early summer for at least some .

Life Cycle

Larvae are aquatic; are terrestrial and short-lived. stage has been described for C. edmundsi. Complete with egg, larval, subimago (subadult), and (adult) stages typical of Ephemeroptera.

Similar Taxa

EphemerellaHistorical confusion; some Caudatella were formerly classified in Ephemerella. Caudatella was established as a separate based on distinct morphological characteristics.

More Details

Taxonomic History

The was revised in 2010, resulting in new combinations and synonym recognitions. Caudatella columbiella was removed from synonymy with C. heterocaudata, and C. circia was recognized as a strict specific synonym of C. heterocaudata. A neotype was designated for C. hystrix based on a specimen from Montana collected in 2000.