Dinetus (Venustidinetus) jordanicus, Jacobs, 2021

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 : 74

Dinetus (Venustidinetus) jordanicus sp. nov.

( Figs 27‒30 , 56 )

Diagnosis. Dinetus jordanicus is characterized by the shiny scutum with reduced puncture; by the absence of long erect setae on head and thorax; by the oblique outer vein of the subdiscoidal cell (cu) converging with the nervulus; the predominantly black head and mesosoma and the absence of dense appressed silver pubescence on propodeum. Both sexes differ from D. venustus and D. tunisiensis by absence of dense appressed pubescence on propodeum and completely oblique wrinkled propodeal enclosure. The male differs from D. porcellaneus by the absence of a tooth on the fore trochanter, the yellow ventral side of mesosoma, the narrow silver pubescence on inner margin of eyes and completely oblique wrinkled propodeal enclosure. The female differs from D. porcellaneus by the more developed yellow on head and pro-thorax and completely striated propodeal enclosure.

Description male. Dorsal and lateral view: figs 29, 30.

Colour. Head yellow, vertex and mandibular apex black. Antenna reddish-yellow; dark brown are the back side of scape and antennomeres 2‒4 on the underside. Pronotum yellow with large black spot dorsally. Scutum black. Scutellum and metanotum yellow. Mesopleuron yellow with large black area distally. Metapleuron and propodeum black. Metasomal terga black; tergum II with large ivory band apically and with big brown spot medially. Last two segments red. Sterna brown. Legs yellow, coxae of all legs with black spot, femora with black stripe dorsally.

Morphology. Anterior margin of clypeus rounded. Antennomeres 4‒13 underside concave, the last truncated and extended into a point. Frons with fine micro punctures. Vertex with very scattered puncture and very fine microsculpture. Scutum shiny, with fine microsculpture and few scattered puncture on the distal part. Mesopleuron very finely reticulated, shiny. Propodeal enclosure more or less shiny, with distinct oblique striae anterior and transverse striae in the posterior area. Lateral parts of propodeum smooth, shining, with fine microsculpture. Lower half of face with short white tomentum. Upper part of mesopleuron with appressed silver pubescence. Distal part of propodeum and coxa of hind leg with sparse silver pubescence. Head and thorax without long erect setae. Legs without specific features. Outer vein of subdiscoidal cell (cu) oblique, converging with the nervulus (cu-a) (see fig. 2). Body length 4 mm.

Description female. Dorsal and lateral view: figs 27, 28.

Colour. Head black with narrow yellow stripes on the inner orbit, a small longitudinal spot in the middle of the face, a large yellow spot on the gena and yellow basal part of mandible. Scape yellow-brown, dorsally black. Antennomeres 2–6 yellow with dark underside. The remaining antennomeres black. Pronotum yellow-brown with ivory bands apically and distally and big black spot in the middle. Scutum black with small yellow spots beneath the tegula. Tegula yellow-brown. Mesopleuron black with small spot in the upper proximal part. Scutellum and postscutellum ivory. Metasoma dark brown; segment I mostly brown, segment II with broad ivory band apically and red spot medially, segments II‒IV sometimes with yellow spots apically, V and VI proximal yellow, pygidial plate brown. Metasomal sterna brown, III with large black spot proximal. Tibiae and tarsi of all legs yellow; hind tibia with ivory stripe outside. Femora of all legs black, yellow ventrally. Coxae and trochanters of all legs black.

Morphology. Antenna slender, antennomere 3 about 5× as long as broad. Mandible with conspicuous tooth outside. Frons, vertex and scutum with fine microsculpture and very scattered puncture. Upper part of mesopleuron and hind coxa with patch of appressed silver pubescence. Hind edges of propodeum with scattered erect silver setae. Face without tomentum. Frons, vertex and thorax without erect setae. Gena and fore legs with long setae. Fore tarsal rake with five long spines, about twice as long as the basitarsus broad. Outer vein of subdiscoidal cell (cu) oblique, converging with the nervulus (cu-a) (see fig. 2). Body length 5.0– 5.5 mm.

Holotype ♂. Jordan mer., Vadi Rum env., 4.‒5.V.1996, leg. Mi. Halada ing. ( OLML). (Labels see fig. 56).

Paratypes. 2 ♀♀ Jordan S, Vadi Rum env., 4.‒ 5.5.1996 leg. Marek Halada ( OLML) .

Etymology. The species is named after its country of origin Jordan.

Distribution. Only the types from Jordan are known.

Figures

FIGURES 27–34. View dorsal and lateral: 27–28 D. jordanicus sp. nov. ♀ paratype, 29–30 D. jordanicus sp. nov. ♂ holotype, 31–32 D. arabicus sp. nov. ♂ holotype, 33–34 D. schmideggeri sp. nov. ♂ holotype. (phot. Luhn) (scale bar 1 mm)

FIGURES 51–56. View dorsal and lateral: 51–52 D. porcellaneus ♂, 53–54 D. vanharteni ♀ holotype, 55 D. pulawskii ♂., 56 holotype labels (phot. Jacobs) (scale bar 1 mm)