Stenocrates popei Endrödi, 1971

Ratcliffe, Brett C., 2015, A Revised Catalog of the Species ofStenocratesBurmeister (Coleoptera: Scarabaeidae: Dynastinae: Cyclocephalini), with Descriptions of Three New Species from Peru and Brazil andStenocrates inpaiRatcliffe, 1978 Placed in Junior Synonymy withStenocrates popeiEndrödi, 1971, The Coleopterists Bulletin 69 (4), pp. 773-779 : 777-778

Stenocrates popei Endrödi, 1971 ( Figs. 12–15 )

Stenocrates popei Endrödi 1971: 179 (original combination).

Stenocrates inpai Ratcliffe 1978: 491 . New synonymy.

Endrödi (1971) described S. popei from two male specimens, one from “ British Guiana ” ( Guyana) and another with no data. His illustrations of the parameres are in Figs. 12–13. I described (1978) S. inpai from a single specimen from Amazonas, Brazil, while in residence there, and my illustrations of the parameres are similar to those of Endrödi. This was during pre-internet days and when the postal system was glacially slow, and I was unaware of Endrödi’ s paper. During routine identifications of Stenocrates species from South America, I found two additional specimens of S. popei in the USNM collection. In addition, I re-examined the two specimens of S. inpai in my collection and the original descriptions and illustrations of S. popei and S. inpai . I have concluded that these are the same species, and both were characterized by imprecise illustrations of the parameres. The illustrations in Figs. 14–15 are a more accurate representation of the distinctive form of the parameres of S. popei .

The holotypes of both species were described from Guyana and Brazil , respectively, and the two new specimens just identified are from Suriname, which represents an unsurprising new country record. This species is probably present in much of the Guiana shield blackwater forests of French Guiana, Guyana, Suriname, and extreme northern Brazil.

Figures

Figs. 12–15. Stenocrates popei, parameres. 12–13) As illustrated by Endrödi (1985); 14–15) More detailed illustration.