Thomas J. Simonsen and Richard L. Brown
Last updated: Dec.15, 2009
Cactobrosis Dyar, 1915, Proc. U.S. Natl. Mus. 47: 406
Type species: Euzophera longipenella Hampson, 1901. Original designation.
Cactobrosis is similar to Zophodia, Echinocereta, and Ozamia, but can be distinguished by the following combination of characters: 1) male antenna bipectinate or strongly serrate and with a shallow sinus with up to 13 clusters of scale-like sensilla at the base of flagellum, 2) maxillary palpus filiform, 3) male abdomen 8 with one pair of strongly developed, ventrolateral scale tufts (Heinrich 1939; Neunzig 1997).
According to Heinrich (1939), Mann (1969), Neunzig (1997) the larvae are blue without transverse bands or spots.
The larvae of Cactobrosis,as currently defined (sensu Neunzig 1997), feed in Ferrocactus. (Heinrich 1939; Mann 1969; Neunzig 1997).
Eggs are laid singly; the larvae are gregarious feeders (Heinrich 1939; Mann 1969).
The distribution of the genus is centred in Mexico, with one species, C. fernaldialis, also occurring in the southwestern USA. (Heinrich 1939, 1956; Mann 1969, Neunzig 1997).