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 from Wyoming, but this may be an accidental host ant.
 * Reported by Mann (1911) in nests of Pheidole californica (= Pheidole oregonica) from Washington State.

Nomenclature

 * Cremastocheilus crenicollis Westwood 1874 Syn.
 * Cremastocheilus gracilipes Casey 1915 Syn.
 * Cremastocheilus areolatus Casey 1915 Syn