Diplonevra, Lioy, 1864

Disney, R. H. L., 2012, Five new species of scuttle fly (Diptera: Phoridae) from southern Africa, African Invertebrates 53 (1), pp. 113-113 : 118-120

Key to the Afrotropical species of Diplonevra

Note: Species recognition in this genus is based on the male sex in the first instance. The description of D. hercules and D. concava from the female sex only was unfortunate. When their males become known an improved key can be constructed.

1 At least top of thorax brown to dark brown...........................................................2

– Thorax reddish yellow..................................................................... hercules Beyer

2 Hind tibia with ventral spines as well as anterodorsals (e.g., Fig. 10 )...................3

– Hind tibia without ventral spines...........................................................................5

3 Hind femora brown to dark brown.........................................................................4

– Hind femora largely yellow (tip of hind trochanter and base of hind femur as in Fig. 11 ; hind tibia as in Fig. 10 ; postpedicels short in both sexes) .......................... ....................................................................................................... armipes (Brues)

4 Wing at most 3 mm long. Hind femora brown, but not very dark... concava Beyer

– Wing clearly more than 3 mm long. Hind femora dark brown (♂ postpedicel about 2.75× as long as basal width and tapered to a point.................... epinephele Beyer

5 Hind femora brown to dark brown.........................................................................6

– Hind femora with basal halves at least yellowish brown to yellow.......................8

6 Haltere knob brown................................................................................................7

– Haltere knob yellow or paler (♂ anal tube more than 3× as long as dorsal face of epandrium ( Fig. 9 ); ♂ postpedicel as in Fig. 8 ) ....................... stuckenbergi sp. n.

7 Mid tibia with a single greatly reduced anterodorsal bristle in its basal third. Wing length clearly more than 3 mm. Base of hind femur and trochanter as Fig. 7 (♂ postpedicel as in Fig. 6 ; hypopygium as in Fig. 4 ; palps as in Fig. 5 )................ ................................................................................................ meridafricana sp. n.

– Mid tibia with the typical dorsal and anterodorsal bristles in the basal third. Wing length clearly less than 3 mm. Base of hind femur and trochanter as in Fig. 12 ..... ........................................................................................................... brincki Beyer

8 Male anal tube exceptionally long ( Fig. 1 ). Postpedicel as in Fig. 3 (base of hind femur as in Fig. 2 )....................................................................... longifistula sp. n.

– Male anal tube less than twice as long as dorsal face of epandrium. Postpedicel shorter and rather lemon­shaped................................................ basilewskyi Beyer

Figures

Figs10–12.Diplonevra spp.,♂: (10) D.armipes (Brues), anterior face of hind tibia;(11) D. armipes (Brues), posterior face of base of hind femur and trochanter; (12) D. brincki Beyer, posterior face of base of hind femur and trochanter. Scale bars = 0.1 mm.

Figs 8, 9. Diplonevra stuckenbergi sp. n., ♂: (8) right pedicel and postpedicel of antenna (with ventral side uppermost); (9) left face of hypopygium. Scale bar = 0.1 mm.

Figs 4–7. Diplonevra meridafricana sp. n., ♂: (4) left face of hypopygium; (5) inner face of left palp; (6) left antenna; (7) posterior face of tip of hind trochanter and base of femur. Scale bars = 0.1 mm.

Figs 1–3. Diplonevra longifistula sp. n., ♂: (1) left face of hypopygium; (2) posterior face of base of hind femur and tip of trochanter; (3) pedicel and postpedicel of antenna. Scale bars = 0.1 mm.