Canthon (Canthon) ornatus Redtenbacher, 1868

Hielkema, Auke J. & Hielkema, Meindert A., 2019, An annotated checklist of the Scarabaeoidea (Insecta: Coleoptera) of the Guianas, Insecta Mundi 732 (732), pp. 1-306 : 62

Canthon (Canthon) ornatus Redtenbacher, 1868

Canthon ornatus Redtenbacher 1868: 53

Note. Three presently recognized subspecies of Canthon (Canthon) ornatus have been described, one of which may occur in the research area. The other two are C. (C.) ornatus bipunctatus ( Burmeister, 1873) (recorded from Brazil, Argentina) and C. (C.) ornatus ornatus Redtenbacher, 1868 (recorded from Brazil).

Subspecies Canthon (Canthon) ornatus thoracicus Harold, 1868

Canthon thoracicus Harold 1868a: 89 (“Guianas,” Brazil)

Distribution. “Guianas”: Harold 1868a: 89 (as Canthon thoracicus ); Gillet 1911b: 34 (as C. thoracicus with C. ornatus as a synonym); A. Schmidt 1922a: 76 (treated as a synonym of C. ornatus which is treated as a variety of C. janthinus Blanchard 1846: 161 ); Blackwelder 1944: 200 (treated as a synonym of C. ornatum ); Vulcano and Pereira 1964: 622 (as C. ornatus [s. l.]). Brazil: Harold 1868a: 89 (as Canthon thoracicus ); Gillet 1911b: 34 (as C. thoracicus with C. ornatus as a synonym); A. Schmidt 1922a: 76 (treated as a synonym of C. ornatus which is treated as a variety of C. janthinus Blanchard 1846: 161 ); Balthasar 1939e: 201 (treated as a synonym of C. ornatus ); Blackwelder 1944: 200 (treated as a synonym of C. ornatum ); Vulcano and Pereira 1964: 622 (as C. ornatus [s. l.]). Other: A. Schmidt 1922a: 76 (Bolivia, Colombia - treated as a synonym of C. ornatus which is treated as a variety of C. janthinus Blanchard 1846: 161 ); Blackwelder 1944: 200 (Argentina, Bolivia, Colombia - treated as a synonym of C. ornatum ); Vulcano and Pereira 1964: 622 (Argentina, Colombia - as C. ornatus [s. l.]).

Note. The only publication that we are aware of where a distribution is explicitly given for Canthon ornatus thoracicus is the original description in Harold (1868a: 89). The inclusion of “Guianas” in later publications ( Gillet 1911b: 34; A. Schmidt 1922a: 76; Blackwelder 1944: 200; Vulcano and Pereira 1964: 622) mentioning the distribution of C. ornatus s. l. is likely based on this record. As we are unaware of any recent records of C. ornatus s. l. from the research area, we consider its occurrence there doubtful and in need of confirmation.