Hylaeus (Deranchylaeus) promontorii Meade-Waldo, 1923

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 : 63-64

Hylaeus (Deranchylaeus) promontorii Meade-Waldo, 1923

Figures 12 , 37 , 124–127

Prosopis longula Friese 1913a: 583 . 1 ♂, Rhodesia [ Zimbabwe]: Bulawayo. Typus ♂ MNHU Berlin.— Friese 1913b: 574; Alfken 1914: 192; Friese 1916: 425; Cockerell 1920: 306; Rasmussen & Ascher 2008: 66.

Hylaeus (Deranchylaeus) longulus (Friese) : Bridwell 1919: 138, 146–147; Snelling 1985: 8 (as longula ).

Hylaeus promontorii Meade-Waldo, 1923 : nomen novum for Prosopis longula Friese, 1913 not Prosopis longula Pérez, 1903 .— Eardley & Urban 2010: 34.

Hylaeus (Deranchylaeus) promontorii Meade-Waldo : Snelling 1985: 8.

Hylaeus rhodognathus Cockerell, 1936e: 4 , 7–8. ♂, Belgian Congo [ DR Congo]: S of Bukavu. Typus ♂ AMNH New York, ac. 34242.— Syn. n.— Cockerell 1942: 2; Eardley & Urban 2010: 34.

Hylaeus (Deranchylaeus) rhodognathus Cockerell : Snelling 1985: 8.

Diagnosis

This is one of the smallest Deranchylaeus species (together with H. xanthostoma and H. venustus ). The fine sculpture and shield-like shape of the propodeum are diagnostic. The mask of the male and the mouth parts are pale yellow. It belongs to the curvicarinatus-group.

Characteristic features

Male. TL 3.4–4.8 (4.17) mm, WL 2.4–3.3 (2.86) mm.

Head. Proportions HL:HW 0.98, UFW:LFW 1.69, shape prolonged trapezoid. Scapi short cylindrical, apically with a light spot, SL:SW 1.7; flagella long, mostly pale yellow. Mask light yellow, complete, side patches reaching up to antenna bases, lower (or upper) half of supraclypeal area yellow. Clypeus CL:CW 1.49, slightly shining. Frons and vertex with moderate, close punctation, punctures shallow. Labrum and mandibles white.

Mesosoma. Pronotum with two yellow lines, calli and tegulae pale. Pronotum narrow; anterior margin lamellate, sharp toward corners, posterolateral angles blunt. Mesonotum and scutellum with moderate, close punctation. Legs black, except basis and top of tibiae, tarsi; wings hyalin, venation brown. Propodeum edged, terminal area sharp around, shield-like sublime, angles between terminal area and lateral area pointed, medial area with few longitudinal wrinkles.

Metasoma narrow spindle-shaped, black. Sculpture fine shagreen, silky shining, punctation of T1 minute, scattered, still recognizable. Terminalia ( Fig. 12 ): genital capsule regularly oval in outline, S8 apically blunt, S7 basal lobi with 5 setae, of curvicarinatus type.

Female. TL 4.5–5.0 (4.81) mm, WL 2.8–3.8 (3.39) mm.

Head. Proportions HL:HW 0.98, UFW:LFW 1.49, outline nearly circular. Face with short bright lines near foveae. Clypeus CL:CW 1.43, sculpture Fig. 37 .

Mesosoma. Coloration entirely black. Pronotum little expanded forward, edged in front, dorsolateral angles blunt. Mesonotum and scutellum slightly shining; mesopleurae only shallowly punctate, matt; propodeal terminal area with surrounding margin, ridge between lateral and terminal area not always very clear, otherwise as in male.

Metasoma slender spindle-shaped, black. T1 with narrow white bands on depressions broadly interrupted; sculpture otherwise as in male.

Distribution

South Africa, Zimbabwe ( Eardley & Urban 2010); Democratic Republic of the Congo, Nigeria, Kenya, Mozambique.

Specimens examined: 149 ♂, 3 ♀ coll. AMG, MNHU, AMNH, OLBL, SANC, TMSA.

DEMOCRATIC REPUBLIC OF THE CONGO. S of Bukavu.

KENYA. Malindi 15 km S, 03.18S 40.00E; Sagala env.; Voi env., Tsavo.

MOZAMBIQUE. Manicata, Chimoio 70 km SE.

SOUTH AFRICA. Eastern Cape: Addo 20 km NE, 33.24S 25.56E, 400 m. — KwaZulu-Natal: Maputaland, eManguzi SW; Tembe Elephant Park, env. Jozini.

ZIMBABWE. Bulawayo; Masvingo 80 km E, Nyika.

Remarks

The male is rather abundant, however only a few females are hitherto known.

Figures

FIGURES 12–15. Male terminalia in species of curvicarinatus-group, subgroup (2).—12 H. promontorii Meade-Waldo.—13 H. tenuis (Alfken) (lectotypus).—14 H. venustus sp. n. (typus).—15 H. xanthostoma (Alfken).

FIGURES 36–37. Surface structure of female clypeus.—36 H. tenuis (Alfken).—37 H. promontorii Meade-Waldo. Scale 0.2 mm.

FIGURES 124–127. H. (Deranchylaeus) promontorii Meade-Waldo: head in frontal view and surface structure of basal terga.—124, 125 Male.—126, 127 Female. Scale 0.5 mm.