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Mayfly Genus Timpanoga

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This genus contains two subspecies (Subspecies: Entomologists sometimes further divide a species into distinct groups called subspecies, which have two lower-case words on the end of their scientific name instead of one. The latter is the sub-species name. For example, Maccaffertium mexicanum mexicanum and Maccaffertium mexicanum integrum are two different subspecies of Maccaffertium mexicanum.) that create localized fishable hatches throughout the West. Timpanoga hecuba hecuba can be important east of the Cascades and Sierra Nevada Mountains. Timpanoga hecuba pacifica can be important on the Coast, as its name implies.


Pictures of 3 Mayfly Specimens in the Genus Timpanoga:

Female Timpanoga hecuba (Great Red Quill) Mayfly DunFemale Timpanoga hecuba (Great Red Quill) Mayfly Dun View 3 PicturesThis specimen is 14 mm. Technically this is the subspecies (Subspecies: Entomologists sometimes further divide a species into distinct groups called subspecies, which have two lower-case words on the end of their scientific name instead of one. The latter is the sub-species name. For example, Maccaffertium mexicanum mexicanum and Maccaffertium mexicanum integrum are two different subspecies of Maccaffertium mexicanum.) T. h. hecuba. The Cascades, Sierras and further West is where the other subspecies (Subspecies: Entomologists sometimes further divide a species into distinct groups called subspecies, which have two lower-case words on the end of their scientific name instead of one. The latter is the sub-species name. For example, Maccaffertium mexicanum mexicanum and Maccaffertium mexicanum integrum are two different subspecies of Maccaffertium mexicanum.), T. h. pacifica is found. The Great Basin seems to have formed a barrier preventing any overlap in their distribution.
Collected September 15, 2013 from Mystery Creek #178 in Idaho
Added to Troutnut.com by Entoman on September 23, 2013
Timpanoga hecuba (Great Red Quill) Mayfly NymphTimpanoga hecuba (Great Red Quill) Mayfly Nymph View 2 Pictures
Collected August 26, 2005 from the St. Regis River in Montana
Added to Troutnut.com by Bnewell on June 28, 2011
Timpanoga hecuba (Great Red Quill) Mayfly NymphTimpanoga hecuba (Great Red Quill) Mayfly Nymph View 6 Pictures
Collected August 31, 2018 from the Bitterroot River in Montana
Added to Troutnut.com by Troutnut on June 13, 2019

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