Madecorphnus

Revision of the South American genus Paraegidium (Coleoptera: Scarabaeidae: Orphninae)

 

Frolov A. V., Akhmetova L. A., Vaz-de-Mello F. Z. 2017. Revision of the South American genus Paraegidium (Coleoptera: Scarabaeidae: Orphninae). Journal of Natural History, 51, 995–1014.

The Neotropical Orphninae genus Paraegidium Vulcano et al. is revised. Five new species are described: Paraegidium monneorum sp. nov., Paraegidium barretoi sp. nov., Paraegidium pokornyi sp. nov., Paraegidium howdeni sp. nov., and Paraegidium oliveirai sp. nov. The genus is subendemic to Brazil, and its species are distributed from Guiana Shield in the north to the Peruvian Yungas in the west and to Serra do Mar escarpments in the southeast. Keys, descriptions, illustrations of habitus and male genitalia, and distributional record map are given.

Review of the Madagascan Orphninae with revision of the genus Triodontus Westwood

 

Frolov A. V., Montreuil O., Akhmetova L. A. 2016. Review of the Madagascan Orphninae (Coleoptera: Scarabaeidae) with revision of the genus Triodontus Westwood. Auckland: Magnolia Press. 2016, 93 p.

The subfamily Orphninae (Coleoptera: Scarabaeidae) is reviewed from Madagascar. A total of four genera and 39 species were found, all being endemic to the island. The following five new species are described: Triodontus ankarafantsikae, Triodontus lemoulti, Triodontus viettei, Triodontus fairmairei, and Triodontus inexpectatus. Lectotypes are designated for Orphnus nitidulus Guérin-Méneville, 1844 and Orphnidius modestus Benderitter, 1914. The following new synonymies are proposed: Orphnus nigrita Brancsik, 1893 is synonym of Triodontus hova (Fairmaire, 1868); Triodontus occidentalis Paulian, 1977 and Orphnus obsoletus Brancsik, 1893 are synonyms of Triodontus nitidulus (Guérin-Méneville, 1844); Triodontus vadoni Paulian, 1977 and Triodontus perrotorum Paulian, 1977 are synonyms of Triodontus owas Westwood, 1852.Keys, descriptions, illustrations of habitus and male genitalia, and distributional records maps are given for all species.

Little known Orphninae collected by the Madagascan expeditions

Frolov A.V. 2013. Little known Orphninae (Coleoptera, Scarabaeidae) collected by the Madagascan expeditions of the California Academy of Sciences. Biodiversity Data Journal, 1, e1016.  PDF (462.44 KB) Figure 2. Madecorphnus falcatus Paulian, male, habitus.

New locality records for Madecorphnus niger Frolov, 2010, M. falcatus Paulian, 1992, M. simplex Frolov, 2010, and Triodontus itremoi Paulian, 1977, are given. Endophallus armature of M. niger Frolov, 2010, is described and illustrated.

Revision of the Madagascan genus Madecorphnus

Figures 1-19. Madecorphnus spp. Figures 1-19. Madecorphnus spp. 1 – habitus and scheme of chaetotaxy, 2-7 – head, 8-19 – aedeagus in lateral view and parameres in dorsal view. 1, 9 - M. montreuili sp. n., 2, 12 - M. punctatus sp. n., 3, 8 – M. falculoides, 4, 10 - M. pauliani sp. n., 5, 14 – M. falcatus, 6, 18 - M. perinetensis sp. n., 7, 19 - M. peyrierasi sp. n., 13 - M. dentatus sp. n., 15 - M. simplex sp. n., 16 – M. falciger, 17 - M. brunneus sp. n

Frolov, A.V. 2010. Revision of the Madagascan genus Madecorphnus Paulian (Coleoptera, Scarabaeidae, Orphninae). Journal of Natural History, 44, 1095-1111.

Abstract — A scarab beetle genus, Madecorphnus Paulian, endemic to Madagascar, is revised. Nine new species are described: M. brunneus sp. n., M. dentatus sp. n., M. montreuili sp. n., M. niger sp. n., M. pauliani sp. n., M. perinetensis sp. n., M. peyrierasi sp. n., M. punctatus sp. n., M. simplex sp. n. Diagnosis of the genus is clarified. Distribution map and a diagnostic key to all species are presented.

Genus Madecorphnus (Scarabaeidae, Orphninae)

Orphninae, Madecorphnus falcatus

Body small-sized (4.5–5.0 mm) with mostly uniform, brown to black coloration. Upper side of body with a few setae having distinct locations: 1 seta on elytral base near epipleuron, 1 seta on posterior angle of pronotum, 1 seta approximately in the middle of lateral margin of pronotum, 2 setae on the anterior angle of pronotum, 2 setae on each gena, and 2 setae on the anterior margin of clypeus. Mandibles asymmetrical, subequal in length in females and subequal to strongly unequal in males. Clypeus symmetrical to asymmetrical in males, wide, bordered anteriorly, smooth, without tubercles or ridges. Pronotum wider than long, smooth, similar in both sexes, without any depressions, tubercles, or ridges. Propleurae smoothly convex, without carinae separating anterolateral areas from basal area. Scutellum triangular, narrowly rounded apically, about 1/10 length of elytra...

A new genus of Orphninae from Madagascar

Figs 1-5. Renorphnus clementi. 1, 2 – general view (1 – male, 2 – female); 3 – parameres in dorsal view; 4 – aedeagus in lateral view; 5 – internal sac of aedeagus.

Frolov, A.V., Montreuil, O. 2009. A new genus of Orphninae (Coleoptera, Scarabaeidae) from Madagascar. Zoosystematica Rossica, 18, 65-69. PDF (2.69 MB)

Abstract — A new genus, Renorphnus gen. n, is established for Madagascar species Orphnus clementi Petrovitz. The new genus differs in distinctive shape of anterior tibiae of male, shape of clypeus, pronotum with 2 more or less prominent tubercles in both sexes, and in widened and pectinate setae on costal margin of wings. O. clementi is redescribed. Diagnostic key to Madagascar Orphninae genera is given.

Three new species of Madecorphnus

Madecorphnus hanskii

Frolov, A.V. 2012. Three new species of scarab beetle genus Madecorphnus Paulian, 1992 (Coleoptera: Scarabaeidae: Orphninae) from Madagascar. Proceedings of the Zoological Institute RAS, 316, 159–165.  PDF (439.31 KB)

Abstract — Three new species of the scarab beetle genus Madecorphnus Paulian, 1992, endemic to Madagascar, are described and their characters are illustrated. The new species are: M. hanskii sp. n. (Ambohitantely special reserve, central plateau), M. aquilonius sp. n. (Northern Madagascar), and M. barclayi sp. n. (Masoala Peninsula, North-Eastern Madagascar). Distribution maps are presented.