The mayflies have around forty families with about 4,000 species, so classification of this organism is not a small task.  In fact new species are still being described.  New species in the Tricorythopsis genus were described as early as 2008 (Dias, 2008).  Below is the complete classification of a particular mayfly species.

Domain- Eukarya
        Kingdom- Animalia
                Phylum- Arthropoda
                            Order- Ephemeroptera
                                Family- Leptohyphidae

- Tricorythopsis


Domain: Mayflies are members of the Eukarya because their cells contain a true nucleus and they have membrane bound organelles

Kingdom: Mayflies fall into this  particular kingdom because they are multicellular, heterotrophic, and they do not have cell walls

Phylum: Mayflies exhibit a segmented body, chitinous exoskeleton, and paired jointed appendages

Class: Mayflies have characteristic insect traits, such as three pairs of legs and a segmented body with a head, abdomen, and thorax

Order: Ephemeroptera means short-lived wings (Ephemeros- one day, Pteron- wing)

Family: Leptohyphidae means the "Little Stout Crawlers"

 The trait that defines the Tricorythopsis genus is unique male genitalia features

The species artigas is known for its characteristic wing venation

The phylogenic tree of life image above shows a very broad phylogenic tree of numerous organisms from all three domains.  Mayflies are members of the Eukarya (Eucarya) domain under the animal kingdom.  The image to the right is a phylogenic tree more specific to mayflies.  It has been modified by me from the Carlos Molineri (2006) study.  The study was done on the Leptohyphidae family based on a database of multiple morphological features.  The modified tree to the right shows groupings of the Tricorythopsis and Leptohyphes families with their respective species (click on the image to enlarge).  The study was based off of morphological features with implied weighting, the numbers above the branch points show absolute and relative Bremer support.  For more information about the extensive mayfly classification, visit     
    I hope you have enjoyed the journey through the wonderful world of mayflies!  If you have any questions or comments please don't hesitate to contact me.


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