Cremastocheilus knochii

One of about thirty-five species of myrmecophilous Cremastocheilus. The host ant is Formica or Lasius.

Distribution
Colorado, Illinois, Indiana, Iowa, Kansas, Minnesota, Nebraska, New Mexico, North Dakota, South Dakota, Wisconsin, Wyoming ; Canada (Manitoba)

Habitat
Common host is Formica or Lasius.

Biology
Reported by Lavigne (1969) in nests of Pogonomyrmex occidentalis but this may be an accidental host ant.