Hylaeus (Deranchylaeus) venustus Dathe, 2014, female new

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/7C8BC66F-F9AA-573B-92C0-286A2AAE9DA6
treatment provided by	by Pensoft
scientific name	Hylaeus (Deranchylaeus) venustus Dathe, 2014, female new
status

Treatment

Hylaeus (Deranchylaeus) venustus Dathe, 2014: 73-74. ♂, Kenya. Holotype OLML Linz.

Diagnosis.

It is the brightest form in the group; ♂ with bright yellow mask (Fig. 8 View Figures 1–9 ), entirely yellow antennae and legs. ♀ with extensively orange colouration: scapes, antennae and legs entirely orange. Punctation of mesosoma distinctly weaker than in H. promontorii and H. portokalius (Figs 54-56 View Figures 52–57 ).

Description.

Female. N = 10. Total length 4.2-4.9 (4.53) mm, wing length 2.7-3.1 (2.97) mm.

Head outline round-cordate (Fig. 50 View Figures 46–51 ), HL:HW 1.01-1.04 (1.02), UFW:LFW 1.43-1.53 (1.48); scarcely hairy. Scapes long and slender, light brown from basal segment, flagella yellow below, slightly darker above. Foveae faciales short. Mask orange: in addition to entire clypeus, mouthparts, lower face and often base of supraclypeal area and sides of face pale; clypeus sometimes with yellow spot below. Clypeus CL:CW 1.16-1.27 (1.21), BW:DO 1.32-1.38 (1.35); surface longitudinally wavy-grooved with relatively large shallow punctate pits, silky-glossy. Supraclypeal area with densely large punctation; with median furrow, apex broad, gradually merging into frons. Frons flat, strongly subcontiguously punctate, satiny. Vertex convex, punctation slightly finer and more scattered, not very shiny. Facial sides evenly convex, with angular paraocular margin. Genae bevelled, longitudinally wrinkled and punctate. Malae very narrow. Occiput rounded. Labrum and mandibles yellow.

Mesosoma (Fig. 56 View Figures 52–57 ) normal, black, ventrally and laterally with short sparse white pubescence. White spots only on tegulae and (rarely) calli. Pronotum with sharp anterior edge, sides acutely protruding. Mesonotum, mesopleura and scutellum dull, shagreen, with fine close punctation. Omauli rounded. Legs yellow to brown along whole length, rarely femora dark, bases of tibiae sometimes spotted with white. Wing membranes clear; stigma, costa and veins light brown. Propodeum sharp-edged; medial area with distinct horizontal part, basally with fine, distally with coarse sharp-edged meshes, interspaces shiny. Terminal area circular with sharp bar, medial groove broad, smooth, dully sculptured above. Lateral areae sharply defined posteriorly and laterally, with short white pinnae.

Metasoma (Fig. 62 View Figures 58–63 ) spindle-shaped, black. Tergum 1 shagreen, with minute sparse punctation; following terga more finely sculptured, punctation barely visible; depressions not well defined. With narrow white lateral fringe. Terminal fringe pale.

Distribution.

Kenya. - New records: KENYA: 1 ♀ Voi env., Tsavo, 8-18.XI.1996; 6 ♂♂, 4 ♀♀ ibid. 23.III.-4.IV.1997; 2 ♂♂, 8 ♀♀ ibid., 11-14.IV.1997; 4 ♀♀ ibid., 16.V.2007; 6 ♂♂, 4 ♀♀ E Mwingi, Kangonde wadi, 18.IV.2007, all M. Halada leg.; 1 ♀ Nguni, N of Ngomeni, 27.IV.2008, M. Snížek leg. - All coll. OLML and coll. SDEI.