Dinetus (Venustidinetus) nabataeus de Beaumont, 1960

Jacobs, Hans-Joachim, 2021, A review of Dinetus Panzer, 1806 with descriptions of five new species and keys to world species (Hymenoptera, Crabronidae), Zootaxa 5061 (1), pp. 69-94 : 75

Dinetus (Venustidinetus) nabataeus de Beaumont, 1960

( Figs 15 , 39, 40 )

Dinetus nabataeus de Beaumont, 1960: 268 , ♂. Holotype: ♂, Egypt: Sinai Peninsula: Fairan oasis (CAS).

Description female. Dorsal and lateral view: figs 39, 40.

Colour. Body yellow-brown with black and ivory markings. Head yellow-brown, vertex and mandibular apex black. Scape yellow-brown with black reverse face, flagellum dark brown, basal antennomeres mostly paler. Pronotum yellow-brown with ivory front and hind margin, medially often with black spot. Scutum black with yellow-brown anterior edges, the black parts may be more or less reduced. Scutellum and postscutellum creamy. Mesopleuron and metapleuron yellow-brown. Propodeum yellow-brown, dorsal area (always) and reverse face black (sometimes lacking). Metasoma yellow-brown, tergum II with broad ivory spots or band on the hind margin (sometimes reduced). Terga III‒IV often darkened. Antennomere 3 about 2.5× as long as broad. Legs yellow-brown, coxae, trochanters and femora of all legs with black stripe dorsally.

Morphology. Integument of head and metasoma smooth and shiny, with extremely fine microsculpture. Propodeal enclosure less shiny, finely reticulated and with fine oblique striae (fig. 15). Face without tomentum. Head and metasoma without erect setae. Mesopleuron with appressed silver pubescence on the proximal upper part. Middle and hind coxae with appressed silver pubescence. Propodeum without appressed pubescence, but with scattered silver setae on the lower lateral part. Outer vein of subdiscoidal cell (cu) oblique, converging with the nervulus (cu-a) (see fig. 2). Body length 4.5 mm.

Description male.

Colour. Head yellow, vertex black or yellow-brown with black spot in the area of ocelli. Antenna light yellowbrown. Mesosoma and metasoma like in female. Dark parts of legs brown.

Morphology. Sculpture and pubescence like female. Antennomere 3 about 2.5× as long as broad, median ones about as long as broad, antennomeres 6‒13 modified, 13 apically extended into a point. Outer vein of subdiscoidal cell of fore wing oblique (sometimes difficult to see). Body length 4.5 mm.

Distribution. Egypt (type locality), Jordan ( Guichard 1991), Oman ( Guichard 1980), United Arab Emirates ( Schmid-Egger 2011, 2014, see below). Israel, Saudi Arabia (see below).

Examined material. ISRAEL: 1 ♂ Iddan N Elat , 08.05.1996, leg. Schmid-Egger ( CSE) ; 2 ♀♀ Hazewa, Arava valley , 30°46’88’’N 35°14’56’’E, 05.05.1995, Irvin leg. ( CSE) ; 1 ♀ Hazewa, Arava valley, Shizaf Nat. Res. , - 16 m, 30°45’18’’N 35°15’50’’E, 03.04.1995, Irvin leg. ( CSE) . SAUDI ARABIA: 1 ♂ 1 ♀ Jeddah , 27.10.1979, Büttiker leg. ( CSE) . UNITED ARAB EMIRATES: 4 ♂♂ Um al Qaywayn , 25.51N 55.51E, 19.03.2009 Schmid-Egger leg. ( CSE) ; 1 ♀ Wadi Shawka , 2 km N, 27,13N 56,02E, 29.04.2009, van Harten leg., GBOL 15148 ( CSE) ; 1 ♀ Dubai, Nakhalai , 25.04.1984, Sugden leg. ( CSE) .

Figures

FIGURES 13–18. Propodeal enclosure: 13 D. cereolus ♀, 14 D. schmideggeri holotype ♂, 15 D. nabataeus ♀, 16 D. pulawskii ♂, 17 D. pictus ♀, 18 D. simplicipes ♀. (phot. Jacobs)

FIGURES 35–42. View dorsal and lateral: 35–36 D. venustus ♀, 37–38 D. venustus ♂, 39–40 D. nabataeus ♀, 41–42 D. deserticus ♀ holotype. (phot. 35–38 Luhn, 39–42 Jacobs) (scale bar 1 mm)