Hylaeus (Deranchylaeus) paulyi, 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 : 59-61

Hylaeus (Deranchylaeus) paulyi sp. n.

Figures 21 , 39 , 116–119

Diagnosis

The species is slender and petite, the face is in outline transversely round. According to the male terminalia, it belongs to the melanosoma-group, i.e., the distal lobi of the S7 are stretched, flattened and apically truncate, the proximal lobi bear numerous fine pale bristles. The scapi of the male are expanded.

Description

Male. TL 4.1–5.0 (4.59) mm, WL 3.2–3.6 (3.43) mm.

Head. Proportions HL:HW 0.91, UFW:LFW 2.15; outline transverse trapezoid. Scapi black, conical, apically expanded with smooth bulb, wider than flagella, SL:SW 1.70; flagella long, yellow below, dark above. Mask white, supraclypeal area black. Foveae faciales short. Clypeus CL:CW 1.62, silky shining, shallow and sparsely punctate. Supraclypeal area with sharply bent side ridges. Frons below with large shallow punctures, punctation above moderate, subcontiguous, with white erect pilosity. Genae, occiput and malae normal. Labrum and mandibles black.

Mesosoma with normal shape; pilosity short, white, toment band at edges of pronotum, calli, mesonotum, metanotum and propodeum. Pronotum, calli and tegulae entirely black. Pronotum narrow expanded forward; anterior margin in middle sharp, laterally sloping forward-outside. Mesonotum and scutellum shagreen, silky shining, punctation fine to moderate, close. Mesopleurae shagreen, matt, punctation indistinct. Legs black, bright are tibiae base, foretibiae in front, basitarsi above, rest of tarsi dark; wings browned, venation brown. Propodeum edged, glossy; medial area transversely depressed, with longitudinal ridges basally, distally delimited by a carina; terminal area only laterally sharply marginate, extending to lower edge of lateral areas.

Metasoma slim, slender spindle-shaped; black. T1 shagreen, silky shining, punctation indistinct, minute and scattered. T1 with narrow white side fringes. Terminalia ( Fig. 21 ) similar to H. melanosoma , genital capsule with gonoforcipes rounded apically, S7 with distal lobi as expanded lamellae.

Female. TL 4.7–5.2 (5.01) mm, WL 3.7–4.2 (3.93) mm.

Head. Proportions HL:HW 0.93, UFW:LFW 1.51, outline transversely elliptical; vertex raised. Scapi black; flagella short, yellow below, dark above. Face with very narrow, interrupted white lines at orbits below foveae. Foveae faciales long up to vertex. Clypeus CL:CW 1.17, shagreen, matt, with large but shallow punctures, downwards indistinct limited ( Fig. 39 ). Supraclypeal area wide with flat side edges. Frons and vertex streaky shallow punctate, contiguous. Genae and occiput normal, malae narrow. Labrum and mandibles black.

Mesosoma normal; pilosity denser than usual, particularly on underside, posterior edges of pronotum, mesonotum and metanotum and on lateral surfaces of propodeum. Tegulae with white spot. Pronotum black, slightly expanded forward, only middle with sharp edge, sides sloping to forward-outside. Mesonotum and scutellum shagreen, silky shining, punctation fine to moderate, close. Mesopleurae shagreen, matt, punctation indistinct. Legs entirely black; wings darkened, venation black. Propodeum edged, matt; medial area narrow, with a series of shiny meshes, distally delimited by a carina, behind it a vertical shagreen, matt area above broad central furrow; terminal area laterally with sharp ridges extending to the lateral areas, its surface punctate, matt.

Metasoma slender, spindle-shaped; black. T1 finely shagreen, silky shining, punctation minute, scattered, indistinct. T1 with narrow white lateral fringes, depression of following terga with ciliar band. Fringe of last sternum pale.

Distribution

Cameroon.

Type material: 18 ♂, 17 ♀

Holotypus: ♂ CAMEROON. Adamaoua: Beka nr Ngaoundere, 07.17N 13.19E, 24.07.1987, Pauly lg.—In coll. RBINS Brussels.

Paratypes: CAMEROON. Adamaoua: Louga W Ngaoundere, 07.05N 13.12E, 24.07.1987, 1 ♂; Tékel, 06.47N 13.10E, 24.07.1987, 16 ♂, 17 ♀, all Pauly lg.—In coll. RBINS Brussels, SANC Pretoria, SDEI Müncheberg.

Derivatio nominis

The new species is dedicated to Mr Alain Pauly, Brussels, for his valuable contributions to the exploration of the African bees.

Flower visit

On flowers of Harungana madagascariensis (Pauly, label record).

Figures

FIGURES 20–22. Male terminalia in species of melanosoma-group.—20 H. melanosoma (Cockerell).—21 H. paulyi sp. n. (typus).—22 H. eardleyi sp. n. (typus). Scale 0.5 mm.

FIGURES 38–39. Surface structure of female clypeus.—38 H. camerunensis sp. n. (paratypus).—39 H. paulyi sp. n. (paratypus). Scale 0.2 mm.

FIGURES 116–119. H. (Deranchylaeus) paulyi sp. n.: head in frontal view and surface structure of basal terga.—116, 117 Typus male.—118, 119 Paratypus female. Scale 0.5 mm.