Madecorphnus fisheri Frolov, 2014

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 : 30-32

Madecorphnus fisheri Frolov, 2014

( Figs. 13 A–E)

Madecorphnus fisheri Frolov, 2014: 35 .

Type material examined. Holotype ( Figs. 13 A–D), male, “ MADAGASCAR: Toliara Prov., Parc National d'Andohahela, Col du Sedro, 3.8 km 113° ESE Mahamavo , 37.6 km NNW Tolagnaro, 21–25 I 2002 / 24°45′50″S, 46°45′6″E coll. Fisher, Griswold et al . California Acad. of Sciences, sifted litter - montane rainforest elev 900m code: BLF5010 / CASENT 5504179 / Madecorphnus fisheri Frolov 2013 HOLOTYPUS ” ( CASC) .

Diagnosis. This species can be easily separated from other Madecorphnus species by its internal sac of the aedeagus without fields of spinules but with 1 long, straight sclerite, 1 shorter, folded sclerite, and 2 comma-shaped sclerites ( Fig. 13 D).

Description. Male. Body length 6.0 mm. Color uniformly brown, disc of head and pronotum darker ( Fig. 13 A).

Right mandible slightly longer than left, without tooth behind apex. Labrum trapezoidal, with slightly rounded sides, length about 1/7 width (in dorsal view). Frontoclypeus slightly asymmetrical, apically obtuse, with 2 long and 4 shorter setae on the apical margin. Canthus and frontal suture indistinct. Frontoclypeus slightly depressed apicomedially. Head finely punctate with minute punctures separated by more than 4 times their diameter. Mentum without tubercles.

Pronotum approximately 1.5 times wider than long, widest medially. Disc of pronotum convex, without any depressions, tubercles, or ridges. Punctation on pronotum finer than on head, almost indistinct. Margins with relatively wide border, lateral margins with 4 long setae: 1 seta on basal angle, 1 seta approximately in the middle of lateral margin, and 2 setae on the apical angle.

Scutellum triangular, about 1/12 length of elytra.

Elytra convex, with distinct humeral and apical, widest at basal third. 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 elytron 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 to each other. Longer tibial spur shorter than 2 basal tarsomeres in mesothoracic legs and as long as 2 tarsomeres in metathoracic legs.

Parameres relatively wide in lateral view, with almost indistinct lateral teeth ( Fig. 13 B). Internal sac of the aedeagus with a characteristic long, almost straight sclerite, shorter folded sclerite, and 2 comma-shaped sclerites ( Fig. 13 D). Fields of spinules absent.

Female unknown.

Distribution and habitat. The type locality of M. fisheri is the southernmost locality of a Madecorphnus species to date. The specimen was collected in the mountain rainforest of the Andohahela National Park ( Fig. 13 E).

Figures

FIGURE 13. Madecorphnus fisheri, holotype. Habitus in dorsal view (A), aedeagus in lateral view and parameres in dorsal view (B), labels (C), internal sac of aedeagus (D), distributional records (E).