Madecorphnus perinetensis Frolov, 2010

Frolov, Andrey V., Montreuil, Olivier & Akhmetova, Lilia A., 2016, Review of the Madagascan Orphninae (Coleoptera: Scarabaeidae) with a revision of the genus Triodontus Westwood, Zootaxa 4207 (1), pp. 1-93 : 50-53

Madecorphnus perinetensis Frolov, 2010

( Figs. 26 A–F)

Madecorphnus perinetensis Frolov, 2010c: 1108 .

Type material examined. Holotype ( Figs. 26 A–E), male, “ Madagascar East Perinet A.Peyrieras XI-1972 / Holotypus Madec. perinetensis Frolov 2009 ” ( MNHN) .

Paratypes: one male and two females with the same data as the holotype ( MNHN) ; one male “ Madagascar East Perinet A.Peyrieras X-1972 ” ( MNHN) .

Additional material examined. MADAGASCAR: Toamasina: male, “ Madagascar Est: Analamazoatra 6- 11.I.2011 Ballerio leg.” ( ABCB) .

Diagnosis. This species is similar to M. peyrierasi externally and in the shape of the internal sac armature, but can be separated from it by the different shape of the parameres and somewhat larger eyes ( Figs. 26 A–B).

Description. Male. Body length 5.5–5.8 mm. Color uniformly brown ( Fig. 26 A).

Right mandible about 2 times longer than left, without tooth behind apex. Labrum trapezoidal, length about 1/ 6 width (in dorsal view).

Frontoclypeus asymmetrical, slightly convex anteriorly, obtuse, with 2 long and 2 shorter setae on the anterior margin. Frontoclypeus slightly depressed in the middle anteriorly, finely punctate.

Pronotum 1.8 times wider than long, widest medially. Margins with relatively wide border, lateral margins with 4 long setae. Pronotum evenly convex, minutely punctate.

Elytra convex, with distinct humeral and apical tubercules. Maximum width approximately at basal 1/3. First stria distinct and reaching the apex of elytron, other striae indistinct. Disc of elytra sparsely punctate with relatively large punctures. Epipleura with long, sparse, brown setae. Base of elytra with border from scutellum to humeral callus.

Protibiae with 3 outer teeth, lateral margin basad of outer teeth not crenulate. Apex with robust, spur-like seta and a few smaller setae basally. Mesothoracic and metathoracic legs similar in shape. Longer tibial spur shorter than 2 basal tarsomeres in mesothoracic legs and as long as 2 basal tarsomeres in metathoracic legs.

Parameres less tapering apically than in the previous species, wider in dorsal view, and acute in lateral view. Internal sac with 2 longer and 2 smaller sclerites ( Figs. 26 D–E).

Female. Females differ from males in having short subsymmetrical mandibles, long protibial spur, and wider elytra.

Distribution and habitat. Madecorphnus perinetensis is known from a small area near Andasibe, eastern Madagascar, in primary rain forest habitat ( Fig. 26 F).

Figures

FIGURE 26. Madecorphnus perinetensis, holotype. Habitus in dorsal view (A), aedeagus in lateral view and parameres in dorsal view (B), labels (C), internal sac of aedeagus (D—photograph, E—schematic representation of armature), distributional records (F).