Velvet ants (Hymenoptera: Mutillidae) of the Algodones sand dunes of California, USA Author Pitts, James P. Author Wilson, Joseph S. Author Williams, Kevin A. Author Boehme, Nicole F. text Zootaxa 2009 2131 1 53 journal article 10.5281/zenodo.188392 4683115e-4971-4b8f-bb75-1a3f9b104521 1175-5326 188392 Odontophotopsis biramosa Schuster Odontophotopsis ( Odontophotopsis ) biramosa Schuster, 1952 . Brooklyn Ent. Soc., 47: 43–47. Male. Holotype data: California, Imperial Co., Holtville , 2 Jul 1929 , P.W. Owens (NMNH). Odontophotopsis ( Odontophotopsis ) biramosa Schuster, 1958 . Ent. Amer. (n. s.) 37: 56. Male. Diagnosis of male . This species is recognized by having a tridentate mandible with an extremely large dorsal tooth that is separated from the lower portion of the mandibular apex by a deep, wide sinus, which makes the mandibular apices appear biramose ( Fig. 29 ), and by the clypeus, which has a horseshoe-shaped tubercle posteromedially that overhangs the clypeus as a slight hood-like or nasutiform process. Also, this species has a single mesosternal process on each side of the midline, and its cuspis is approximately half the free length of the paramere. The genitalia are illustrated in Fig. 10 . Female. Unknown. Material examined. California , Imperial Co ., Algodones Dunes : Glamis, 2 mi . NE, on Ted Kipf Road, 301’, 33°00.969’N 115°06.033’W , 2 males , 29–30.Jul.2007 , K.A. Williams and J.S. Wilson ( EMUS ); Wash Rd., 7 km SE Hwy. 78, 1 male , 9–10.Jun.2008 , R.B. Kimsey and T.J. Zavortink ( UCDC ). Distribution. California and southwestern Arizona northward into southern Nevada. Remarks. This species is rare, but not endemic to the Algodones Sand Dunes. A more thorough discussion of this species can be found in Pitts (2007).