S. Mahunka szerk.: Folia Entomologica Hungarica 55. (Budapest, 1994)

- Metapleuron dull, entirely or almost entirely punctuate or longitudinally costate (Figs 6,43) (species-group savignyi) , 9 2 Ocello-ocular line 2.2 times transverse diameter of lateral ocellus; dorsal disc of propodeum longer than scutellum (Nigeria, ?Cameroon) D. villiersi (Invrea, 1953) - Ocello-ocular line 0.9 or 1.2 times transverse diameter of lateral ocellus; dorsal disc of propodeum less than half length of scutellum 3 3 Ocello-ocular line 1.2 times transverse diameter of lateral ocellus 4 Ocello-ocular line 0.9 times transverse diameter of lateral ocellus 5 4 Second tergum long oval, 1.2 times as wide as long (Fig. 44) (Algeria, Egypt, Libya, Mauritania, Tunisia) (Figs 17-18 D. nitida (Bischoff, 1920) Second tergum short oval, 1.4 times as wide as long (Tunisia) (Fig. 45) D. dumonti (Invrea, 1953) 5 Scutellar furrow rather long, reaching laterally to the level of parapsidal furrows; axillae narrow, 1/5 as wide as length of scutellar furrow (Fig. 46) (Algeria, Libya, Niger) D. algerica (Bischoff, 1920) Scutellar furrow short, reaching laterally to the level of notaulices; axillae wide, half as wide as length of scutellar furrow 6 6 Malar space as long as basal width of first flagellar segment (Algeria, Chad, Libya, Mauritania, Niger, Tunisia) D. patrizii (Invrea, 1932) - Malar space half as long as basal width of first flagellar segment 7 7 ' Disc of second tergum covered with deep, individual punctures, interspaces smooth (Algeria, Libya, Mauritania, Tunisia) D. geyri (Bischoff, 1920) Disc of second tergum covered with shallow, foveolar punctures, interspaces with sharp longitudinal ridges 8 8 Disc of third sternum covered with large punctures, interspace less in breadth than width of punctures (Libya) D. confalonierii (Invrea, 1932) Disc of third sternum covered with minute punctures, interspace 4-6 times broader than punctures (Somalia) D. migiurtinica (Invrea, 1956) 9 Metapleuron with parallel longitudinal costae (Fig. 6); sixth sternum with copulatory brushes narrowly separated mesally (Fig. 9) (Egypt, Saudi Arabia, Tunisia) D. mahunkai sp. n. - Metapleuron with minute punctures, interspace narrower than width of punctures (Fig. 43); copulatory brushes widely separated (Fig. 16) 10 10 Scutellar furrow unusually short, axillae fully as wide as length of scutellar furrow (Fig. 47) (Yemen) | D. yemenita (Invrea, 1950) Scutellar furrow longer, axillae as wide as half length of scutellar furrow 11