Stenamma knowltoni is described as a new species from various localities in northern Utah and southern Idaho. The new species falls clearly into the large eyed group of M. R. Smith's monograph of Stenamma.
Gregg, Robert E.
"A new species of Stenamma (Hymenoptera: Formicidae) from Utah,"
Great Basin Naturalist: Vol. 32
, Article 4.
Available at: http://scholarsarchive.byu.edu/gbn/vol32/iss1/4