Sialis bilobata is described as a new species of the alderfly family Sialidae from Los Angeles County, California. A brief description of the species, illustrations, and diagnosis that compares it with Sialis arvalis Ross are provided.
Whiting, Michael F.
"New species of Sialis from Southern California (Megaloptera: Sialidae),"
Great Basin Naturalist: Vol. 51
, Article 13.
Available at: https://scholarsarchive.byu.edu/gbn/vol51/iss4/13