Achmonia knirschi, 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 : 263-265

Achmonia knirschi sp. nov.

( Figs. 25–31 )

Type locality. Eritrea.

Type material. Holotype ♂: ERITREA: “ Erythraea // CNHM 1955, Karl Brancsik” ( FMNH).

Description. Body length 12.5 mm; length from anterior margin of head to posterior margin of elytra: 6.5 mm. Black with red elytra, scutellum black, abdomen brownish black; antennae and legs dark brown. Head and pronotum with transverse micro-striation and micro-punctation. Head with setiferous postocular punctures ( Fig. 25 ). Labrum quadrilobate, with moderately prominent inner lobes ( Fig. 25 ). Scutellum very large, with deep punctation. Elytra with fine punctation, arranged in three series.

Male. Tergite and sternite of male genital segment as in Figs. 30, 31 . Aedeagus length ( Fig. 27 ) 1.3 mm, with median lobe spearhead-shaped ( Fig. 28 ); paramere long and narrow ( Fig. 27 ); internal sac more or less visible and narrow, covered by fine scales.

Female. Unknown.

Ratios: HL/HW: 1.10; TeL/EyL: 2.03; PL/PW: 1.29; EL/EW: 1.08; PW/HW: 0.96; EW/PW: 1.24; EL/PL: 1.04; A5L/A5W: n. a.; A10L/A10W: n. a.

Differential diagnosis. Achmonia knirschi sp. nov. differs from other Afrotropical species of the genus by the transverse microstriation of the head and pronotum and by the shape of the median lobe.

Etymology. This species is dedicated to Eduard Knirsch (1869–1955) ( Horn et al. 1990), in whose collection (currently in FMNH), the holotype is deposited.

Distribution. The species is recorded only from an unspecified locality in Eritrea ( Fig. 1).

Figures

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).