Cyclocephala rufonigra Demay, 1838

Cyclocephala rufo-nigra Demay 1838: 23 (French Guiana)

Distribution. Guyana: Endrödi 1985a: 148; Moore et al. 2018b: 242. French Guiana: Demay 1838: 23. “Guianas”: Arrow 1937b: 15; Blackwelder 1944: 252. Other: Endrödi 1966a: 298 (none).

Note 1. Demay presented to a congress in Metz [France] a leaflet, accompanied by figures, containing allegedly the descriptions of thirteen beetle species found in French Guiana. He sent an extract of this leaflet to the Revue Zoologique, which was then published (Demay 1838: 23). This publication contains just eleven non-illustrated descriptions, one of which is the only known record of Cyclocephala rufonigra . The type locality is erroneously altered to “ Guyana ” in Endrödi (1985a: 148) and Moore et al. (2018b: 242).

Note 2. Burmeister (1847: 521) suspects Cyclocephala rufonigra may be synonymous with C. dorsalis (which is now a synonym of C. dispar). The present location of the type material is unknown and this species thus remains a species inquirendum.