Madecorphnus pauliani 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 : 32

Madecorphnus pauliani Frolov, 2010

( Figs. 14 A–F)

Madecorphnus pauliani Frolov, 2010c: 1102 .

Type material examined. Holotype ( Figs. 14 A–E), male, “ Madagascar Forêt Tanala [Fort-Carnot] Alluaud 1901 82 / Holotypus Madec. pauliani Frolov 2009 / MUSÉUM PARIS Coll . Ch. ALLUAUD” ( MNHN).

Diagnosis. This species differs from other Madecorphnus species in having 3 setae on the anterior angles of the pronotum and in distinct shape of the parameres.

Description. Male. Body length 5.2 mm. Color dark brown, head and legs somewhat paler ( Fig. 14 A).

Right mandible about 2 times longer than left, without tooth behind apex. Labrum trapezoidal, its length 1/4–1/ 5 width (in dorsal view).

Frontoclypeus asymmetrical, slightly convex anteriorly, obtuse, with 2 long and a number of smaller setae. Canthus and frontal suture indistinct. Frontoclypeus somewhat depressed in the middle anteriorly, minutely punctate.

Pronotum 1.8 times wider than long, widest medially. Margins with relatively wide border, lateral margins with 5 long setae (3 setae located on each anterior angle). Pronotum evenly convex and 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. Epipleura with long, sparse, brown setae. Base of elytra with border from scutellum to humeral callus. Elytra minutely punctate except for a few relatively large punctures in the middle of each elytron near stria 1.

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 as long as 3 basal tarsomeres in metathoracic legs.

Parameres widely rounded apically, without lateral teeth ( Fig. 14 C). Internal sac with 2 large, feebly sclerotized sclerites ( Figs. 14 D–E).

Female unknown.

Distribution and habitat. Madecorphnus pauliani is known from one locality in southeastern Madagascar ( Fig. 14 F).

Figures

FIGURE 14. Madecorphnus pauliani, holotype. Habitus in dorsal view (A), labels (B), aedeagus in lateral view and parameres in dorsal view (C), internal sac of aedeagus (D—photograph, E—schematic representation of armature), distributional records (F).