Diagnosis. Male and female are black, brown, or aeneous. Antennal club is smaller

than the eye and truncate or slightly emarginate at the apex (Figs. 6-6 and 6-7), separating

this species from C. aciculatus and C. randalli. The terminal club antennomere is wider

than long, unlike Cybocephalus new species 3, but not as short as Cybocephalus new

species 1. In males, the basal plate (Fig. 6-10) and median lobe (Figs. 6-8 and 6-9) are

easily distinguished from all other species.

 Geographic distribution. Baja California and northern Mexico (Fig. 6-11).

 Material examined. Mexico: Baja California Sur, Las Barracas, 2-V-1986, coll.

P. DeBach, Ex. cactus scale on Opuntia cholla (35, 5 UCRC); 50.3 km. SE Guerrero

Negro, 15-1-1974, E. L. Sleeper (2o, CSCA); Baja California Norte, 6 mi. N Guerrero

Negro, 16-III-1981, F. Andrews & D. Faulkner, collected in flowers of Sphaeralcea

axillaris (15', 1 CSCA); 12.7 km. E El Rosario, 30o04'15"N 115o37'10"W, 180 m., 18-

VII-1991-28-V-1992, coll. W. H. Clark, E. M. Clark, P. E. Blom & D. M. Ward, ethylene

glycol trap (1 OSMN); 12.7 km. E El Rosario, km. 68, 30o04'15"N 115o37'10"W, 180

m., 7-II-1984-2-IV-1985, coll. W. H. Clark & P. E. Blom, ethylene glycol trap (1 ,

OSMN); Sonora, Hermosillo, 28-VIII-1954, coll. R. Debach, Ex. Aonidiella aurantii

(Maskell) (6o, 4 UCRC); Punta Chueca, 18-IV-1978, Ex. Jojoba (95, 11 CSCA);

Nogales, 3-VIII-1966, coll. Schwenke (15, USNM); Tamaulipas, 18 mi. SE Estacion

Manuel, 1-XI-1982, coll. J. Huber (1 CSCA).

 Remarks. Label data indicate that this species feeds on the armored scale

Aonidiella aurantii (Maskell) and a scale insect infesting Opuntia (Cylindropuntia) sp.

For a detailed host list north of Mexico see Smith and Cave (2006a).