Hylaeus (Deranchylaeus) sambiensis, Dathe, 2023

Dathe, Holger H., 2023, New insights into the taxonomy of the Hylaeus xanthostoma complex and further additions to the African Hylaeus fauna (Hymenoptera, Anthophila, Colletidae), Contributions to Entomology 73 (1), pp. 67-93 : 67

publication ID	https://dx.doi.org/10.3897/contrib.entomol.73.e102655
publication LSID	lsid:zoobank.org:pub:77E4C420-0B01-49B8-B634-CAB943BD7397
persistent identifier	https://treatment.plazi.org/id/067BE456-6E98-4B3F-BF73-8AAC35184863
taxon LSID	lsid:zoobank.org:act:067BE456-6E98-4B3F-BF73-8AAC35184863
treatment provided by	by Pensoft
scientific name	Hylaeus (Deranchylaeus) sambiensis
status	sp. nov.

Treatment

Hylaeus (Deranchylaeus) sambiensis sp. nov.

Diagnosis.

The punctation of the thorax is similarly coarse to H. xanthostoma , but the mask is white, the mouthparts black. The species stands somewhat apart because of the rounded shape of the gonoforcipes (Fig. 34A View Figures 28–37 ).

Description.

Male. N = 2. Total length 4.55-4.65 (4.60) mm, wing length 3.10 mm.

Head nearly circular (Fig. 6 View Figures 1–9 ); HL:HW 0.99-1.00 (0.99), UFW:LFW 1.52-1.35 (1.33); pubescence very short and sparse. Scapes short, compact, little expanded, ScL:ScW 1.75-1.91 (1.83), entirely black. Flagella normal in length, yellow, dark above. Foveae faciales placed high, small. Mask ivory, weakly shiny; lateral spots reach above scape bases, tapering to orbits; clypeus CL:CW 1.32-1.35 (1.33), BW:DO 0.97-1.06 (1.01); distinctly convex, especially apically, surface shagreen, punctation flat; anterior margin horn-brown. Supraclypeal area sometimes entirely black, with raised lateral margins, punctation shagreen, extended above into a broad apex gradually merging into frons. Scape fields of frons grooved, towards edges and above with strong close punctation arranged in rows; surface shagreened, barely shiny. Vertex highly convex, densely and strongly punctate in middle. Sides of face evenly convex, with rounded paraocular margin. Occiput rounded. Genae striate, shiny. Malae narrow. Labrum and mandibles brown; in one specimen, mandibles white spotted basally.

Mesosoma (Fig. 15 View Figures 10–18 ) somewhat depressed, black, hardly hairy. Tegulae white-flecked, one specimen with spots also on calli and pronotum. Pronotum sharply in middle, angularly protruding laterally. Mesonotum and scutellum finely shagreen, dull, with strong close punctation. Mesopleura likewise coarsely punctate; omauli rounded. Legs black, with white-yellow on tibiae I anteriorly, II and III basally and apically; tarsi white, terminal phalanx dark. Wings clear, with stigma brown, costa and veins dark brown. Propodeum coarsely and sharply sculptured, medial area with coarse meshes, interspaces shiny. Terminal area surrounded by upturned sharp bars, also coarsely sculptured, shiny; median furrow distinct. Lateral areae laterally delimited.

Metasoma (Fig. 24 View Figures 19–27 ) slender and elongated, black. Tergum 1 shagreen, very minute scattered punctation barely perceptible; following terga only shagreen, silky-glossy; depressions barely defined. Tergum 1 without lateral fringes. Sterna flat, without markings. Terminalia (Fig. 34 View Figures 28–37 ); genital capsule inconspicuous, elliptic in outline, dorsal view, gonoforcipes rounded and with long bristles on distal outer margin. Penis valves narrow and of same length as gonoforcipes in dorsal view. Sternum 7 with four large lamellar bristles without hooks distally (Fig. 43 View Figures 38–43 ); distal flag distinctly elongate and bearing a stout short bristle. Proximal lobe widened distally like a spoon and bearing shorter bristles. On sternum 8, median peg far distant from narrow distal tip; spiculum elongate and curved.

Type material.

Holotype ♂, ZAMBIA NW: Solwezi 100 km W, 12°13'S, 25°39'E, 1400 m alt., 10.XI.2005, M. Halada leg., coll. OLML. -Paratype 1 ♂, same data, coll. SDEI.

Etymology.

Named after the country of origin, Zambia (latinised, adjectival).