caricis (Crawford, 1914)

Type locality: USA, California, Colorado, Illinois, Maine, New Mexico, Oregon, Pennsylvania, Utah, Virginia; Canada, British Columbia.

Additional distribution: USA, Idaho.

Host plant: Carex sp.

Remarks: Hodkinson and Bird (2000) note that some Californian specimens show some unique morphological variation.

Parasitoids: A related Livia species in Europe is parasitized by an itonid gall midge ( Lestodiplosis liviae Rübsaamen).