Madecorphnus brunneus 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

Madecorphnus brunneus Frolov , sp. nov.

( Figure 17 , 28 , 31 )

Type material

Holotype, male. East Adringitra Massif , Anjavidilava, 1850–1950 m, 18.XII.1971 - 15.I.1971 ( MNHN).

Description

Holotype. Body length 6.2 mm. Colour brown, pronotum and head dark brown.

Right mandible about two times longer than left, without tooth basad of apex. Labrum trapezoidal, its length about 1/5 width (in dorsal view).

Clypeus asymmetrical, slightly convex anteriorly, obtuse, with two long setae. Genae very small, not protruding past eyes. Canthus and frontal suture indistinct. Clypeus slightly depressed in the middle anteriorly, finely punctate.

Pronotum 1.9 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 sparse punctuation. 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 acutely rounded in lateral view ( Figure 17 ). Internal sac of the aedeagus with one longer sclerite and one smaller, somewhat bifurcated sclerite ( Figure 28 ).

Diagnosis

M. brunneus sp. nov. is similar to M. perinetensis sp. nov. and M. peyrierasi sp. nov., but differs from them in having parameres less acute in lateral view and different internal sac armature.

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.