Madecorphnus simplex 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 : 40

Madecorphnus simplex Frolov, 2010

( Figs. 19 A–F)

Madecorphnus simplex Frolov, 2010c: 1106 , Frolov 2013a: 5 .

Type material examined. Holotype ( Figs. 19 D, E), male, “ MADAGASCAR CENTRE AMBATOFITORAHANA 1800 M F D H M / 31.XII.1972 / A. PEYRIERAS / Holotypus Madec. simplex Frolov 2009 ” ( MNHN) .

Additional material examined. Male, “ Madagascar, Fianarantsoa Prov., Foret d'Atsirakambiaty , 7.6 km 285° WNW Itremo, elev 1550 m., 22–26 January 2003 / 20°35′36″S, 046°33′48″E colls. Fisher Griswold et al. Calif. Acad. of Sci. pitfall trap—montane rainforest collection code BLF7150” ( CASC) ; male, “ MADAGASCAR: Province Fianarantsoa, Parc National Ranomafana , at broken bridge, elev 1110 m 19–26 March 2002 / 21°13′57″S, 47°22′19″E collector R. Harin'Hala California Acad. of Sciences, malaise trap in high altitude rainforest, MA-02- 09A-21” ( CASC) .

Diagnosis. This species can be separated from other Madecorphnus species by the distinct shape of its parameres and the internal sac armature.

Description. Male. Body length 5.5 mm. Color reddish brown ( Fig. 19 A).

Right mandible 1/5 longer than left, without tooth behind apex. Labrum trapezoidal, length about 1/4–1/5 width (in dorsal view).

Frontoclypeus asymmetrical, slightly convex anteriorly, obtuse, with 2 long and a number of smaller setae. Frontoclypeus slightly depressed in the middle anteriorly, sparsely punctate (punctures separated by about 5 puncture diameters).

Pronotum 1.8 times wider than long, widest medially. Margins with relatively wide border, lateral margins with 4 long setae. Pronotum evenly convex, sparsely 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. Epipleura with long, sparse, brown setae. Base of elytra with border from scutellum to humeral humps. Elytra sparsely punctate except for a few relatively large punctures.

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 as long as 2 basal tarsomeres in mesothoracic legs and shorter than 3 tarsomeres in metathoracic legs. Metafemora with a few pectinate setae on the inner side apically.

Parameres rounded apically (in lateral view), with small teeth laterally ( Fig. 19 B). Internal sac with 1 sclerite composed of 2 long slender spinules connected basally ( Figs. 19 D–E).

Female. Unknown.

Distribution and habitat. Madecorphnus simplex is known from 3 localities in central and eastern Madagascar ( Fig. 19 F).

Figures

FIGURE 19. Madecorphnus simplex, 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).