Madecorphnus perinetensis Frolov, 2010

details, Publication, authors, including instructions for, information, subscription, http, www. tandfonline. com, loi & tnah 20, 2010, Revision of the Madagascan genus Madecorphnus Paulian (Coleoptera: Scarabaeidae: Orphninae), Journal of Natural History 44 (17 - 18), pp. 1095-1111 : 1108-1109

Madecorphnus perinetensis Frolov , sp. nov.

( Figures 6, 18 , 29 , 31 )

Type material

Holotype, male. Perinet, XI.1972, A. Peyrieras leg ( MNHN) . Paratypes, one male and two females with the same data as the holotype . Paratype, male: Perinet, X.1972, A. Peyrieras leg.

Description

Holotype. Body length 5.8 mm. Colour uniformly brown.

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

Clypeus asymmetrical, slightly convex anteriorly, obtuse, with two long and two shorter setae on the anterior margin. Genae very small, not protruding past eyes. Canthus and frontal suture indistinct. Clypeus 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 four long setae. Pronotum evenly convex, minutely punctate.

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

Anterior tibiae with three outer teeth, lateral margin basad of outer teeth not crenulate. Apex with robust, spur-like seta and a few smaller setae basally. Middle and posterior legs similar in shape. Longer tibial spur shorter than two basal tarsomeres in middle legs and as long as two tarsomeres in posterior legs.

Aedeagus. Parameres less tapering apically than in the previous species, wider in dorsal view and acute in lateral view ( Figure 18 ). Internal sac with two longer and two smaller sclerites ( Figure 29 ).

Variability

Body length of the paratypes is about 5.5 mm. Paratypes have smaller mandibles (right and left almost the same length) and otherwise similar to the holotype.

Diagnosis

This species is similar to M. peyrierasi sp. nov. externally and in the shape of internal sac armature, but can be separated from it by the different shape of the parameres and somewhat larger eyes ( Figure 6 ).

Etymology

The name of this species is derived from the toponym Perinet, where the type series was collected.

Figures

Figure 31. Madecorphnus spp., distribution map.

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. Note: Scale for Figures 8–19.

Figures 20–30. Madecorphnus spp., schematic representation of invaginated internal sac of aedeagus with armature. (20) M. falculoides; (21) M. montreuili sp. n.; (22) M. pauliani sp. n.; (23) M. punctatus sp. n.; (24) M. dentatus sp. n.; (25) M. simplex sp. n.; (26) M. falcatus; (27) M. falciger; (28) M. brunneus sp. n.; (29) M. perinetensis sp. n.; (30) M. peyrierasi sp. n. Note: Not to scale.