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''Melissodes robustior'', the robust long-horned bee, is a species of 
long-horned bee
The Eucerini (often called long-horned bees) are the most diverse tribe in the family Apidae, with over 32 genera worldwide that were previously classified as members of the family Anthophoridae. All species are solitary, though many nest in lar ...
in the family Apidae. It is found on the West Coast of North America.
References
Further reading
* Apinae Articles created by Qbugbot Insects described in 1915 Western North American coastal fauna {{Apinae-stub