Mimeoma acuta.

Distribution: One species, M. nigra Endrödi, occurs in the Dominican Republic, and the remaining four species are found from Mexico to Brazil and Bolivia.  There is a doubtful record for Cuba (Endrödi 1966).

Composition: 5 species (Endrödi 1966, 1979, 1985a; Ratcliffe 1977).

Diagnosis: Mimeoma species are similar in appearance to some Cyclocephala species except the clypeus in Mimeoma is subtriangular and pointed, whereas the clypeus is rounded or emarginate at its apex in Cyclocephala.  They may also resemble, on a smaller scale, species of Ancognatha except that the mentum in Ancognatha is furrowed or depressed on its surface with a distinctly excised apex, and in Mimeoma the surface of the mentum is flat and the apex is weakly emarginate.  Males of Mimeoma have a bidentate protibia while males of Ancognatha have a tridentate protibia.  Casey (1915) also noted that in Mimeoma the mesocoxae are distinctly (he said “widely”) separated, whereas they are nearly contiguous in Ancognatha.  The antenna is 10-segmented, and the club is always short.  Males have an enlarged protarsus.

Larvae: the larval stages are unknown for all of the species of
Mimeoma. 

Biological notes: adults are attracted to lights as well as the flowers of some palms (Bactris and Astrocaryum species).  All of the species are apparently lowland in distribution (less than 1,500 m).

Literature cited:
Casey, T. L. 1915. A review of the American species of Rutelinae, Dynastinae, and Cetoniinae. Memoirs of the Coleoptera 6: 1-394.

Endrödi, S. 1966. Monographie der Dynastinae (Coleoptera, Lamellicornia). I. Teil. Entomologische Abhandlungen 33: 1-460.

Endrödi, S. 1979. Neue Arten des Dynastinen Tribus Cyclocephalini (Coleoptera, Melolonthidae) aus Amerika. Annales Historico-Naturales Musei Nationalis Hungarici (pars Zoologica) 71: 215-218.

Endrödi, S. 1985a. The Dynastinae of the World. Dr. W. Junk Publisher, Dordrecht. 800 pp., 46 plates.

Ratcliffe, B. C. 1977. Four new species of Neotropical Cyclocephalini (Coleoptera: Scarabaeidae). Acta Amazonica 7: 429-434.