Oedichirus taitamontis, Rougemont, 2018

Rougemont, Guillaume de, 2018, New species and records of African and Lemurian Oedichirus ERICHSON (Staphylinidae, Paederinae, Procirrina), Linzer biologische Beiträge 50 (1), pp. 447-460: 451-452

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http://doi.org/ 10.5281/zenodo.4004244

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Oedichirus taitamontis


Oedichirus taitamontis   nov.sp. (Figs 6)

♂ Holotype: KENYA, 3.XII.74, Taita Hills 1250 m, env. Wundanyi, Mahnert Perret ♀ HOLOTYPE Oedichirus taitamontis   des. 2015 G. de Rougemont [MHNG].

D e s c r i p t i o n: length: 6.3 mm; length of fore-body: 2.2; length of head: 0.82; breadth of head: 1.05; length of pronotum: 1.15; breadth of pronotum: 1; length of ely-

1 * Note on Ethiopian localities. The locality of Fauvel’s specimens of O. melanurus   from " Abyssinie, Bogos" cited by FAGEL (1970) is in Eritrea, now a separate State. The three species from Ethiopia cited in this paper are recorded as coming from Bale Province and Kaffa province, as those territories were at the time the beetles were collected. Both provinces, together with others (Wollo, part of Hararghe, Arussi (Arsi), Bale, Sidamo, part of Showa (Shewa) and Illubabor) have since been amalgamated into " Oromia Federal Region". The change is annoying for biogeographers; the fourteen old provinces were more selfcontained, and corresponded more approximately to distinct biogeographical areas. The new regions were drawn roughly along ethnic lines; Oromia (‘land of the Galla, or Oromo people’) encompasses a vast irregular area stretching from the Danakil desert in the northeast to the semi-arid lowlands on the Kenyan border, through the high moist mountains of Arussi and Bale, and extends across the Rift Valley through highlands in the west to tropical rainforests and savannah grassland on the edge of the Nile basin.

tron: 0.88; breadth of elytra: 0.95. Body entirely dark brown, mouthparts, antennae and legs uniformly testaceous. Dorsal surfaces devoid of microsculpture except on rows of keels and grooves of anterior margins of abdominal tergites. Pubescence mixed, short and moderately long, pale. Habitus: Fig. 6h.

Head moderately transverse; post-ocular carina prominent, forming a salient dentiform angle removed from posterior margin of eye; puncturation of disc consisting of a dozen small punctures on frons and near post-antennal tubercles, the vertex with an arc of six punctures surrounding a cluster of three punctures arranged in a triangle, the two punctures forming the base of triangle larger than the others, two ocular punctures on each side, an inverted arc of eight punctures stretching from eye to eye, another such inverted arc just before base, and the usual small punctures in post-ocular grooves. Pronotum relatively short; lateral margins entirely bordered by a salient carina which is entirely visible in dorsal view and extends around the anterior angle onto anterior margin; puncturation of disc dense, not forming discernible series, leaving only a few bilaterally symmetrical impunctate areas, one at middle before base, one at the sides, and another near anterior angles. Micropterous, elytra longer than their combined breadth before posterior angles, the humeral angles completely obsolete; puncturation dense and fairly regular on entire surface. Puncturation of abdominal tergites disposed randomly, the punctures coarser than those of elytra.

Male: sternite VII unmodified; sternite VIII: Fig. 6s8; aedoeagus: Fig. 6al.

Owing to its microptery and entire pronotal border O. taitamontis   nov.sp. belongs in section I in FAGEL’ s 1970 key; because the antennae are missing it cannot be traced after dichotomy 4, but the aedoeagus distinguishes it from all other described species. A notable feature of this new species is the carinate border of the anterior and lateral margins of the pronotum being entirely visible in dorsal view.