Acylophorus lualabaensis Levasseur

Lott, Derek A., 2010, The species of Acylophorus Nordmann (Coleoptera: Staphylinidae: Staphylininae) in continental sub-Saharan Africa, Zootaxa 2402, pp. 1-51 : 36-45

Acylophorus lualabaensis Levasseur

( Figs 27 , 50 , 76 , 103 , 139)

Acylophorus lualabaensis Levasseur, 1968: 1404 ; Herman, 2001: 3033.

Diagnostic characters. Levasseur’s description contains illustrations of the aedeagus and antenna in addition to a textual description of morphological features. The following section contains additional diagnostic features.

Length 9mm. Body black with slightly paler. Abdomen very weakly iridescent. Legs pale with tibiae darkened. Antennae black with apical segments conspicuously paler. Maxillary palpi all pale. Labrum dark brown with pale margins.

Head large (pronotum 1.5x wider than head), 1.05x wider than long, temples well developed behind relatively small eyes ( Fig. 27 ). Pubescence extending over most of head leaving only a central glabrous strip free of punctures. Two pairs of interocular setae. Five postocular setae visible, the posterior puncture and seta displaced forward and out of line. No additional short seta on hind margin of eye. Mandibles with three medial teeth on right and two on left ( Fig. 50 ). Maxillary palpi with terminal segment elongate, glabrous, asymmetric and attenuated at apex ( Fig. 76 ). First segment of antenna almost as long as next five ( Fig. 103 ). Segments I to IX elongate, X transverse.

Pronotum slightly transverse (1.1x wider than long) with rounded sides and widest in basal half. Somewhat sparse semi-erect pubescence extending over most of surface except for central longitudinal glabrous strip and apical band. Dorsal setae absent. One pair of lateral setae. Marginal setae apparently short and reduced in number, though setae are possibly abraded in material available for study. Elytra transverse (1.6x wider than long) with pubescence arising from somewhat close asperate punctures. Apical fringe of thick bristles shorter than the hairs on the rest of the elytra. Abdominal tergites with long, somewhat outstanding pubescence arising from asperate punctures that are much denser at the base of each tergite than in the apical half.

Paramere simply lobed, pegs confusedly arranged at apex (Fig. 139). Median lobe narrowed at rounded apex, easily surpassing paramere.

Type material. Holotype 3: “KOLWEZI H. KATANGA COLL LEVASSEUR / Zilo Walaba / CONGO BELGE 4.1959 D.V. ALLARD / Acylophorus lualabaensis n. sp. LEVASSEUR DET 1967 HOLOTYPE / 17” ( MNHN).

Distribution and bionomics. Only known from a single specimen collected in the Democratic Republic of Congo ( Fig. 148 ). There are no ecological data.

Comparative notes. Similar to A. kumbuiensis , but distinguished by the smaller eyes and the form of the aedeagus.

Figures

FIGURE 148. Distribution of species in the Acylophorus kambuiensis group = A. kambuiensis Bordoni; = A. lualabaensis Levasseur).

FIGURES 26 – 27. Forebodies of species in the Acylophorus kambuiensis group. 26, A. kambuiensis Bordoni, 27. A. lualabaensis Levasseur. FIGURES 28 – 32. Details of Acylophorus orientalis Fauvel. 28, underside of head; 29, lateral view of head with mandible extended; 30, dorsal view of genital segment showing tergite X and styles of tergite IX in situ; 31, male sternite IX; 32, female gonocoxites.

FIGURES 42 – 50. Mandibles of Acylophorus species. 42, A. congoensis Cameron; 43, A. ziloensis Levasseur (Katanga); 44, A. ziloensis Levasseur (Kivu); 45, A. allardi Levasseur; 46, A. salifi new species; 47, A. lomaensis Levasseur; 48, A. mareei Bernhauer; 49, A. bafutensis Levasseur; 50, A. lualabaensis Levasseur.

FIGURES 51 – 76. Terminal segments of the maxilliary palpi of Acylophorus species. 51, A. orientalis Fauvel; 52, A. nitens new species; 53, A. rossii Bordoni, 54, A. bumbunae Bordoni; 55, A. capensis Cameron; 56, A. dankalensis Bordoni; 57, A. tshuapensis new species; 58, A. makhoreae new species; 59, A. densipennis Bernhauer; 60, A. antennalis Cameron; 61, A. collarti Cameron; 62. A. micans new species; 63, A. allardi Levasseur; 64, A. congoensis Cameron; 65, A. ziloensis Levasseur; 66, A. mareei Bernhauer; 67, A. salifi new species; 68, A. lomaensis Levasseur; 69. A. minor new species; 70, A. trigonocephalus Cameron; 71, A. setiger new species; 72, A. usambarae Bernhauer; 73, A. grandis Bernhauer; 74, A. bafutensis Levasseur; 75, A. kambuiensis Bordoni, 76. A. lualabaensis Levasseur.

FIGURES 97 – 103. Antennae of Acylophorus species. 97, A. trigonocephalus Cameron; 98, A. setiger new species; 99, A. usambarae Bernhauer; 100, A. grandis Bernhauer; 101, A. bafutensis Levasseur; 102, A. kambuiensis Bordoni, 103. A. lualabaensis Levasseur. FIGURES 104 – 107. Details of Acylophorus delphinus Fauvel. 104, forebody; 105, terminal segments of maxilliary palpi; 106, antenna; 107, aedeagus. FIGURE 108. Lateral view of head of Acylophorus salifi new species.