Hylaeus (Deranchylaeus) amharicus, Dathe, 2014

Dathe, Holger H., 2014, Studies on the systematics and taxonomy of the genus Hylaeus F. (8) Revision of the Afrotropic subgenus Hylaeus (Deranchylaeus) Bridwell (Hymenoptera: Anthophila, Colletidae), Zootaxa 3874 (1), pp. 1-84 : 25-26

Hylaeus (Deranchylaeus) amharicus sp. n.

Figures 50–51

Diagnosis

This is a large species that is outstandingly rugged. It is completely black and is found in the mountains in Ethiopia at high altitude. The male is not known.

Description

Female. TL 6.4–8.1 (7.32) mm, WL 5.0–6.3 (5.59) mm.

Head. Proportions HL:HW 0.94, UFW:LFW 1.42, outline transversely trapezoidal. Vertex raised, genae thickened. Scapi black, flagella short, completely black. Face entirely black; foveae faciales long. Clypeus CL:CW 1.48, shagreen, matt, with moderate, sparse punctation; front edge strongly domed, above it is impressed, impression continues upwardly into a shallow longitudinal furrow in middle of clypeus, only front shiny and without punctures, above it as remaining surface. Supraclypeal area normal. Frons with strong, sparse punctation, dorsal region including vertex strong and contiguous punctate. Genae thickened, occiput and malae normal. Labrum midst with longitudinal groove delimited by high narrow lateral edges; mandibles black.

Mesosoma long, compact. Pilosity long, white, erect at bottom and sides of metanotum and propodeum; with toment band at end margin of pronotum. Pronotum, calli and tegulae completely black. Pronotum slightly expanded forward, anterior margin edged in middle, sides rounded and sloped. Mesonotum and scutellum shagreen, matt, punctation strong, close, denser in front; mesopleurae similar to mesonotum, but more shagreen, punctation shallow, matt. Legs black; wings brownish, venation black. Propodeum rounded, matt; medial area irregularly, finely, longitudinally wrinkled, slightly shining, demarcated by a furrow; terminal area only edged below, surface radially wrinkled, punctate, central furrow below smooth, above barely separated, matt, shagreen.

Metasoma slender spindle-shaped; black. T1 shagreen, silky shining, punctation fine, close; T2 with punctation little finer, following terga more shagreen, punctation indistinct. T1 with narrow white lateral fringes, T2 and T3 with white broadly interrupted end bands. Fringe of last sternum yellowish.

Distribution

Ethiopia.

Type material: 6 ♀

Holotypus: ♀ ETHIOPIA. Oromia: Muketuri, 09.33N 38.52E, 07.10.2010, Pauly lg.—In coll. RBINS Brussels.

Paratypes: ETHIOPIA. Amhara: 14 km N Debre-Birhan, Bakelo, 09.41N 39.32E, 2840 m, 08.10.2010, 3 ♀, Pauly lg.; Simien Mountains, near Sankaber, 13.13'34N 38.01'47E, 3191 m, 17.10.2011, 1 ♀, Zewdu lg.—Bale: Goba, 07.01N 39.59E, 21.10.2010, 1 ♀, Pauly lg.—In coll. RBINS Brussels, HBRC Addis Ababa, SANC Pretoria, SDEI Müncheberg.

Derivatio nominis

The name is an adjective and refers to the Amhara Region, a regional state of Ethiopia, where the new species was found.

Flower visit

On flowers of Tagetes minuta , Ferula communis (Pauly, label record).

Figures

FIGURES 50–51. H. (Deranchylaeus) amharicus sp. n., female (typus): 50 head in frontal view, 51 surface structure of basal terga. Scale 0.5 mm.