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Yosemitia Ragonot

Thomas J. Simonsen and Richard L. Brown

Last updated:  Dec.15, 2009

Taxonomic Synonymy
Yosemitia Ragonot, 1901. Mem. sur. les. Lep. 8: 17
Type species: Spermatophtora graciella Hulst, 1887. By monotypy.

Diagnostic Characters
Yosemitia can be distinguished by the following character combination: 1) maxillary with very large fan of scales held against the head, 2) forewing M2 and M3 sharing a common stem, but separate for more than half their length 3) hind wing M2+3 and CuA1 not fused basally (Heinrich 1939; 1956; Neunzig 1997; Simonsen 2008).

According to Heinrich (1939; 1956) and Mann (1969),  the larvae are dark bluish without bands or spots.

Larval Hosts
Larvae feed in Echinocerus, Selerocactus, Coryphanta, Hamatocactus, and Mamilaria (Heinrich 1939; 1956; Mann 1969, Neunzig 1997).

Life History
Eggs are laid singly, and the larvae are gregarious internal feeders (Mann 1969).

Yosemitia is known from southwestern USA and adjacent Mexico (Heinrich 1939; 1956; Mann 1969, Neunzig 1997).