Ischnopoderona nigerrima ( Cameron , 1932 ) Cameron, 1932

Paśnik, Grzegorz, 2007, Revision and phylogenetic analysis of the African genus Ischnopoderona (Scheerpeltz, 1974) new status (Coleoptera, Staphylinidae: Aleocharinae), Zootaxa 1412, pp. 1-54 : 43-44

Ischnopoderona nigerrima ( Cameron, 1932) , comb. n.

( Figs. 66–68 , Map 6)

Tachyusa nigerrima Cameron, 1932: 143 .

Tachyusa (s. str.) nigerrima: Cameron, 1950: 54 ; Scheerpeltz, 1934: 1577.

Type material. Lectotype (here designated): Ψ: Blukwa, 26.XI.1928, A. Collart, Tachyusa nigerrima Cam. Type ( IRSNB). Paralectotype: Ψ: same data as lectotype ( BMNH).

Additional material. Democratic Republic of the Congo: Nizi, Blukwa, 12.XII.1928, A. Collart, 1 ex ( IRSNB); P.N.A. [Parc National Albert], Lac Magera, 2000m, 6.III.1934, G. F. de Witte, 1 ex ( MRAC); P.N.A. [Parc National Albert], Kitondo (near Gandjo), 2000m, 7–23.I.1935, G. F. de Witte, 1 ex ( MRAC). Namibia: Windhoek, 4–10.II.1972, at light, 2 exx ( BMNH). Republic of South Africa: Cape Province, De Hoop National Reserve, 17.XI.1993, M. Uhlig, 5 exx ( ZMHB), 1 ex ( ISEA); Cape Province, Karoo National Park, 13.XI.1993, M. Uhlig, 5 exx ( ZMHB), 1 ex ( ISEA); Cape Province, Karoo National Park, Mountain View River, 900 m, 17.XI.1997, M. Uhlig & J. Ndamane, 1 ex ( ZMHB); Natal, Itala Game Reserve, Thalu River banks, 27.I.1994, M. Uhlig, 1 ex ( ZMHB); Natal, Mkuze National Park, Inhlenhlela Pan, 2.II.1994, M. Uhlig, 1 ex ( ZMHB); Natal, Drakensberg, Dragon Peaks Park, 1200 m, 9–11.X.1993, M. Uhlig, 1 ex ( ZMHB); Cape Province, Tsitsikamma forest, 7.III.1992, Jansen & LeRoux, 1 ex ( TMSA); Transvaal, Naboomsap, Torino Ranch, 15.I.1990, UV light, Endrödy­Younga, 1 ex ( TMSA); Cape, Groot Toren farm, 15.IX.1994, river shore & stones, Endrödy­Younga, 1 ex ( TMSA), 1 ex ( ISEA). Rwanda: Kansenze (at base of volc. Karisimbi), 2400 m., 4.III.1935, G. F. de Witte, 1 ex ( MRAC).

Redescription. Body. Length 2.7–3.1 mm, convex, parallel­sided, glossy; body colour black; antennae and legs brown.

Head circular in outline, convex; eyes large, moderately protruding from lateral contours of head, length of each seen from above subequal to that of postocular region; surface of head without microsculpture; puncturation minute, pinprick­like and moderately dense. Antennae moderately long, extending to 1/3 of elytra, slightly increasing in width apically, antennomeres 2 and 3 subequal in length, antennomeres 4–8 longer than wide, antennomeres 9–10 as long as wide, antennomere 11 nearly coniform.

Pronotum quadrate, convex, lateral sides sinuately narrowed to obtuse hind angles; before base with relatively large transverse impression; surface without microsculpture; puncturation fine and dense; pubescence at midline directed posteriorly in apical half and anteriorly in basal half.

Elytra subquadrate, at suture as long as pronotal length at midline; surface without microsculpture; puncturation minute, pinprick­like and moderately sparse.

Abdomen widened posteriorly, bases of tergites III–V each with deep transverse impression, first two impressions coarsely punctate, third impression smooth, impunctate; tergal puncturation minute, pinprick­like and moderately dense; surface without microsculpture.

Male. Aedeagus as in Figs. 66–67 .

Female. Spermatheca as in Fig. 68 .

Remarks. Ischnopoderona nigerrima is similar to I. madecassa , from which it can be distinguished by the smaller eyes, length of each seen from above subequal to that of postocular region (eyes longer than postocular region in I. madecassa ), the first antennomere coloured like remaining antennomeres (first antennomere paler than remaining antennomeres in I. madecassa ), the tergal puncturation dense (tergal puncturation sparse in I. madecassa ) and by the shape of the aedeagus.

Distribution. Democratic Republic of the Congo, Namibia, Republic of South Africa, Rwanda (Map 6).

Figures

FIGURES 66 – 68. Ischnopoderona nigerrima (Cameron): 66 — aedeagus in lateral view, 67 — aedeagus in ventral view, 68 — spermatheca.