Hylaeus (Deranchylaeus) burundis, 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/E1AAE528-D25B-4B0B-8AA3-4EFB14B050D1
taxon LSID	lsid:zoobank.org:act:E1AAE528-D25B-4B0B-8AA3-4EFB14B050D1
treatment provided by	by Pensoft
scientific name	Hylaeus (Deranchylaeus) burundis
status	sp. nov.

Treatment

Hylaeus (Deranchylaeus) burundis sp. nov.

Diagnosis.

The only available specimen, a male, has an orange-coloured mask, which was previously only known from females of the H. xanthostoma subgroup. Characteristic are also the terminalia, especially the open form of the genital capsule (Fig. 33A View Figures 28–37 ).

Description.

Male. N = 1. Total length 4.65 mm, wing length 3.05 mm.

Head (Fig. 3 View Figures 1–9 ) almost circular; HL:HW 0.97, UFW:LFW 1.75; only posteriorly hairy. Scapes short, compact, little dilated distally, ScL:ScW 1.75; entirely black. Flagella long, segments slightly less than twice as long as thick, yellow, black above. Foveae faciales very short. Mask reduced, orange, dull; lateral spots abbreviated above, not reaching scape bases, running obliquely to orbits and continued along them as a fine line; clypeus CL:CW 1.50, BW:DO 1.00; surface finely shagreen, punctation shallow and scattered; anterior margin black. Supraclypeal area black, with raised lateral margins, punctate laterally and above, apex expanded and gradually merging into frons. Frons narrowly grooved in scape fields, with wrinkled, strongly punctate stripes above; surface dull. Vertex convex, also coarsely punctate in middle. Facial sides evenly convex, with rounded paraocular margin. Occiput rounded. Genae striate, dull. Malae distinct, black. Labrum brown, mandibles predominantly black.

Mesosoma (Fig. 12 View Figures 10–18 ) normal, black, hardly hairy. Tegulae, calli and pronotum black. Pronotum slightly protruded, anterior edge sharp, laterally angular. Mesonotum and scutellum shagreen, dull, with coarse dense punctation. Mesopleura similar, but more shallowly punctate; omauli rounded. Legs black, tibiae I anterior, II and III apically yellow; basitarsi white, other tarsal segments blackened. Wings clear, with stigma brown, costa and veins dark brown. Propodeum coarsely and sharply sculptured, medial area with coarse meshes, interspaces shiny. Terminal area with upturned sharp bars around, also coarsely sculptured, shiny; median furrow distinct. Lateral areae also laterally delimited.

Metasoma (Fig. 21 View Figures 19–27 ) slender and elongate, black. Tergum 1 shagreen, with scattered minute punctation; following terga more shallowly punctate, silky glossy; depressions barely defined. Tergum 1 without lateral fringes. Sterna planar, shallowly punctate, shiny. Terminalia (Fig. 33 View Figures 28–37 ), genital capsule shorter than in H. xanthostoma , gonoforcipes flattened, but narrower and more acuminate, dorsal view, slightly longer than penis valves; sides with fringe of hairs. Sternum 7 with narrowly elongated distal lobes, “flag” setose with 3 short bristles; proximal part apically broadened, setose with five lamellar bristles, as well as other short bristles. Sternum 8 with prominent keel, apex and spiculum broad.

Type material.

Holotype ♂ (single specimen), BURUNDI: Ruvubu National Park, Ruvubu River, 02°59'S, 30°28'E, 1401 m alt., 06.XI.2010, C. Eardley leg.; coll. SANC Pretoria.

Etymology.

The species is named after its country of origin, Burundi (noun in apposition).