Dinetus (s. str.) schmideggeri, 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 : 85-86

Dinetus (s. str.) schmideggeri sp. nov.

( Figs 9 , 14 , 33, 34 , 56 )

Diagnosis. A member of the D. pictus species group. D. schmideggeri is characterized by absence of long erect setae on head and thorax; the dull scutum with distinct microsculpture, shallow indistinct puncture and longitudinal striae in the posterior area; by dense appressed setae on posterior parts of propodeum; the presence of conspicuous wrinkles on lateral parts of propodeum, the absence of teeth on fore trochanter and fore femur, the flattened fore femur with sharp edge and the oblique outer margin of subdiscoidal cell (cu) converging with the nervulus (cu-a). It differs from D. pictus and D. simplicipes by its differently-shaped scutum, the shorter antennomere 3 and different structure of propodeal enclosure. From all other species without long erect setae on head and thorax it differs by the structure of scutum (smooth and shiny in remaining species).

Description male. Dorsal and lateral view: figs 33, 34.

Colour. Head yellow, vertex black. Scape and first antennomeres 2‒9 yellow with dark spots on the underside, the remaining brown. Underside of antennomeres 9‒13 concave. Antennomere 3 about 3.7× as long as apically broad. Pronotum yellow with big black median spot. Pronotal lobe yellow. Scutum black with narrow yellow lateral parts. Scutellum and postscutellum yellow. Proximal and ventral part of mesopleuron yellow, distal part black with big red spot and appressed silver pubescence. Metapleuron yellow with black spot distally. Lateral anterior part of propodeum yellow, posterior part black, dorsal area black. The black part of propodeum except dorsal area covered with silver pubescence. Metasoma yellow-brown, tergum I with two very small ivory spots on the hind margin, II with big ivory spots distally, III with yellow posterior margin, IV brown, V brown with median yellow spot, VI yellow and VII reddish. Fore leg completely yellow. Mid and hind legs: Coxae yellow, black dorsally; trochanters and femora yellow with brown dorsal stripe, tibiae and tarsi yellow.

Morphology. Frons finely reticulated, dull. Vertex with distinct puncture and distinct microsculpture. Anterior margin of clypeus rounded. Scutum dull, with indistinct shallow puncture, distinct striae in the median part and dense microsculpture; in the anterior part with scattered silver pubescence (fig. 9). Mesopleuron smooth and glabrous on the anterior yellow part, with distinct microsculpture and appressed silver pubescence in the posterior black area. Propodeum: Lateral part with distinct microsculpture and some conspicuous longitudinal wrinkles, posterior area smooth and shiny, propodeal enclosure with irregular short longitudinal striae on the apical part and transverse ones on the distal part, distinctly reticulated, dull (fig. 14). The posterior part and the border around the propodeal enclosure with dense appressed silver pubescence. Fore femur flattened and with sharp edge on the underside. Metasomal terga with more or less silver pubescence on posterolateral part. Hind coxa with silver pubescence. Head, mesosoma and fore leg without long erect setae. Outer vein of subdiscoidal cell (cu) oblique, distinctly converging with the nervulus (cu-a) (see fig. 2). Body length 5 mm.

Female unknown.

Holotype ♂. Iran, 17‒5‒78, 1800 m, 15km SE Sarvestan / Fars, leg. Warncke ( ZSM, temporary in coll. CSE). (Labels see fig. 56).

Remark. The head of the holotype was broken off during photography and mounted on a piece of card pinned to the specimen. The right flagellum, and tibia and tarsus of the right foreleg are missing.

Etymology. The species is named in honour of my friend and colleague Christian Schmid-Egger, a well-known specialist for Hymenoptera Aculeata.

Distribution. Iran (type locality).

Figures

FIGURES 1–9. 1–2 fore wing: 1. D. pictus, 2. D. pulawskii. 3–4 antenna: 3 D. pictus ♂, 4 D. simplicipes ♂. 5–6 fore basitarsus: 5 D. pictus ♀, 6 D. simplicipes ♀. 7 clypeus front margin D. pictus ♀, 8 fore trochanter D. dentipes, 9–11 scutum: 9 D. schmideggeri sp. nov. holotype ♂, 10 D. simplicipes ♀, 11 D. venustus ♀, 12 propodeal enclosure D. deserticus sp. nov. ♀ (1–8 after de Beaumont 1960, 9–12 phot. Jacobs)

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 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)