Mayfly Species Siphlonurus columbianus (Gray Drake)
Taxonomic Navigation -?-
Kingdom Animalia (Animals)
» Phylum Arthropoda (Arthropods)
» Class Insecta (Insects)
» Order Ephemeroptera (Mayflies)
» Family Siphlonuridae (Gray Drakes)
» Genus Siphlonurus (Gray Drakes)
» Species columbianus (Gray Drake)
Common Names
| Match | Common Name |
 | Gray Drake |
 | Black Drake |
Where & When
Region: West
According to Fred Arbona in Mayflies, the Angler, and the Trout, this species is abundant and widespread across the West and as far east as South Dakota. The USGS distribution records do not reflect this, but they are often incomplete.
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