nigrigenus Wirth & Blanton, 1956: 222 (male, female). Type locality: Panamá, Bocas del Toro, Almirante. HT F (USNM). Distr.: Mexico (Veracruz) to Colombia, Trinidad, Argentina (Salta: PN El Rey, 24°41'60.00"S, 64°37'60.00"W). Refs.: Ronderos & Spinelli, 1990: 85.
Diagnosis.
Sensilas present in flagellar segments 3-15; antennial ratio 1.62. Third bulky palpal segment, with wide sensory fossa. Yellowish brown mesonotus, with dark brown V-shaped spot just in front of the escutcheon. Wing with extensive interconnected light areas, and small dark areas arranged in a transverse direction. Two spermatheca, absent ring. Distal portion of the parameters abruptly recurred lateral and then ventromesad.
Species very similar to C. chacoensis Spinelli & Wirth.