Achmonia carinata, Janák, Jiří & Bordoni, Arnaldo, 2014

Janák, Jiří & Bordoni, Arnaldo, 2014, Revision of the genus Achmonia of Africa south of the Sahara (Coleoptera: Staphylinidae: Staphylininae), Zootaxa 3872 (3), pp. 257-274 : 265

Achmonia carinata sp. nov.

( Figs. 3, 8, 12 , 20 , 32–34 , 38–41 )

Type locality. D. R. Congo, Libenge.

Type material. Holotype ♂: DEMOCRATIC REPUBLIC OF CONGO: “ Congo Belge, Libenge, 8.i.1948, R. Cremer-M. Neuman // R. I. Sc. Nat. Belg. I. G. 16.655” ( MRAC). Paratype ♀: “Musée du Congo, Haut-Uelé: Moto - 1923, L. Burgeon” ( MRAC).

Description. Body length ( Fig. 3 ) 10.5–11.5 mm; length from anterior margin of head to posterior margin of elytra: 5.5 mm. Brown, elytra yellowish along suture. Head and pronotum with fine micro-punctation. Head with setiferous postocular punctures ( Figs. 8 , 20 ). Labrum quadrilobate, with moderately prominent inner lobes ( Fig. 20 ). Temples with deep groove extended from tooth in posterior angle to near the eye and with similar, deep but wider groove above it. Elytra ( Fig. 12 ) longer than pronotum, posteriad, slightly dilated and wider than pronotum, with broadly rounded humeral angles; surface with fine and very sparse punctation, most punctures arranged in three series. Abdomen with transverse micro-striation and fine, not sparse punctation.

Male. Tergite and sternite of male genital segment as in Figs. 33, 34 . Aedeagus length ( Figs. 38, 39 ) 1.3 mm, with median lobe short and wide ( Fig. 41 ), paramere slender ( Fig. 40 ); internal sac more or less visible and narrow, covered by fine scales.

Female. Head similar to that of male ( Fig. 32 ).

Ratios (HT, PT): HL/HW: 1.00, 1.02; TeL/EyL: 1.54, 1.54; PL/PW: 1.23, 1.22; EL/EW: 1.03, 1.02; PW/HW: 0.91, 0.97; EW/PW: 1.15, 1.14; EL/PL: 1.12, 1.17; A5L/A5W: 0.64, 0.84; A10L/A10W: 0.63, 0.61.

Differential diagnosis. Achmonia carinata sp. nov. differs from other Afrotropical species of the genus by the temples with a deep groove extended from tooth in posterior angle to near the eye and by the shape of the aedeagus.

Etymology. The specific epithet refers to the carina between two grooves on the temple.

Distribution. The new species is recorded from two localities in D. R. Congo: Libenge and Moto ( Fig. 1). Achmonia carinata sp. nov. was collected in Libenge together with the externally very similar Thyreocephalus collarti ( Cameron, 1932) .

Figures

FIGURES 3 – 12. 3, 8, 12, Achmonia carinata sp. nov., HT male; 4, 7, 9, A. simulator sp. nov., PT male, 4, 9 from Mposhi, 7 from Joko; 5, 10, A. amabilis (Boheman), female from Ithala; 6, 11, A. congoensis (Bernh.), male from P. N. Garamba. 3 – 6, habitus; 7, lateral part of pronotum, ventral; 8 – 11, head; 12, pronotum and elytra. SL, superior line; IL, inferior line; EL, elytral length; p, postocular puncture. Scales 1 mm (3 – 6) and 0.5 mm (7 – 12).

FIGURES 13 – 24. 13, 14, 21, 22, Achmonia doloc (Bord.), HT from Java; 15, A. eppelsheimi (Bernh. & Schub.) from Nepal; 16, A. shibatai (Bord.), HT from Taiwan; 17, A. nigra (Bord.), HT from China; 18, 23, 24, A. amabilis (Boh.) from South Africa; 19, A. simulator sp. nov., PT from Mposhi; 20, A. carinata sp. nov., HT. 13, head and pronotum; 14 – 20, labrum; 21, 23, maxillary palpus; 22, 24, labial palpus. 13, 14, 21, 22 from Bordoni (2004 a), 15 from Bordoni (2004 b), 16 from Bordoni (2010), 17 from Bordoni (2009). Scale 0.1 mm; 13, 15 and 17 without scale.

FIGURES 25 – 37. 25 – 31, Achmonia knirschi sp. nov., HT male; 32 – 34, A. carinata sp. nov., 32, PT female, 33, 34, HT male; 35, A. flavomarginata (Bernh.), HT male; 36, A. kapangana sp. nov., HT male; 37, A. simulator sp. nov., HT male. 25, 32, 35 – 37, head; 26, pronotum dorsal; 27, aedeagus; 28, median lobe of aedeagus; 29, paramere; 30, 33, male tergite 10; 31, 34, male sternite 9. Scales 1 mm (25 = 26; 32 = 35 – 37), 0.5 mm (27 = 30, 31, 33, 34) and 0.1 mm (28 = 29).

FIGURES 38 – 53. 38 – 41, Achmonia carinata sp. nov., HT male; 42 – 44, A. kapangana sp. nov., HT male; 45 – 50, A. flavomarginata (Bernh.), LT male; 51 – 53, A. simulator sp. nov., HT male. 38, 45, aedeagus lateral; 39, 42, 46, aedeagus dorsal; 40, 43, 47, paramere; 41, 44, 48, median lobe of aedeagus; 49, 52, male sternite 9; 50, 53, male tergite 10; 51, pronotum dorsal. B, basal bulbus; ML, median lobe. Scales 0.5 mm (38 = 39; 42 = 45, 46, 49, 50, 52, 53; 51) and 0.1 mm (40 = 41; 47 = 43, 44, 48).