Stenogephyra minuta Lyneborg

Webb, Donald W. & Hauser, Martin, 2011, Revision of the genus Stenogephyra Lyneborg (Diptera: Therevidae: Phycinae), Zootaxa 2837, pp. 67-85 : 77

Stenogephyra minuta Lyneborg

( Figs. 6–7 , 45)

minuta Lyneborg (1987:474 desc., Fig. 22 male ant.) (Stenogephyra) .

Lyneborg (1987:474) adequately described Stenogephyra minuta so the description is not reproduced here. The following diagnosis relates S. minuta to the other species in the genus.

Diagnosis. Stenogephyra minuta is similar to S. dianeae spec. nov. and S. parkeri spec. nov. in possessing two pairs of notopleural macrosetae, in lacking dorsocentral macrosetae, in having the katepisternum completely covered with silver pubescence, and in having vein M2 reaching the hind margin of the wing, and having silver pubescence on gena (lateral view) reaching from lower eye margin to ventral margin of head ( Figs. 2, 6, 10 ). It differs from S. dianeae spec. nov. in having silver pubescence along the eye margin not greatly expanded at level of antennal base and not reaching height of frontal ocellus ( Fig. 6 ); the halters dark brown to black, and the male sternite 8 having setae continuous across the posterior margin (as in Fig. 32 ); and the male gonocoxite in lateral view lacking a posteroventral projection (as in Fig. 24). It differs from S. parkeri spec. nov. in having the head glossy with expanded area of silver pubescence at height of antenna ( Figs. 6–7 ) becoming a narrow band along margin of eyes before broadening slightly below level of eyes. This species is recorded from Western Cape Province, South Africa (Fig. 45).

Habitats and Phenology. Stenogephyra minuta has been handnetted or collected in a Malaise trap in a large canyon from September through November.

Specimens examined (n = 308). Type specimen. The holotype male of Stenogephrya minuta Lyneborg (MEI 166060) was collected in South Africa, Western Cape Province, Karoo at junction of Calvinia-Sutherland Road near Inverdoorn Ceres [-33.2, 19.7333], 2–3.X.1959, Stuckenberg, P. & G. and is deposited in NMSA. Other specimens. SOUTH AFRICA. WESTERN CAPE PROVINCE. Uniondale district, 1Ψ paratype (NMSA); Karoo at junction of Calvinia-Sutherland Road near Inverdoorn Ceres [-33.2, 19.7333], 2–3.X.1959, Stuckenberg, P. & G., 2ɗ, 1Ψ paratypes (NMSA); 6 km E Montegu [-33.825, 20.175], 400m, 7–13.X.2002, Irwin, M.E., Parker, F.D., 64ɗ MEI 148363 (CSCA) 148364 (SAMC), 148365–401, 148403–12, 148414–38 (MEIC), 154Ψ 148105 (CSCA), 148413 (SAMC), 148458, 148513–7, 148519–600, 148602–7, 148633–9, 148641–9, 148651–92 (MEIC), Malaise trap in large canyon; 30.IX–22.X.2004, Irwin, M.E., Parker, F.D., Hauser, M., 10Ψ MEI 168691–5, 168697–701 (MEIC), Malaise trap in large canyon; 30.IX.2004, Hauser, M, 7ɗ MEI 167907–8, 167910, 167912–4, 167916, 1Ψ 161380 (INHS); Cederburg Mountains, 19 km NE Clanwilliam, Elisabethfontein [-32.079, 19.058] 400–500m, 15.XI.1996, Irwin, M.E., 1ɗ MEI 124829 (MEIC); Karroo, Ceres, at junction of [roads headed towards] Calvinia and Sutherland [-33.179, 19.759], 2–3.X.1959, Stuckenberg, B, Stuckenberg, P., 1ɗ MEI116039, 1Ψ 116040 (NMSA).

Figures

FIGURES 2 – 15. Stenogephyra sp. nov. 2 – 3. S. dianeae spec. nov.. 2. Head frontal view. 3. Head lateral view. 4 – 5. S. janiceae spec. nov.. 4. Head frontal view. 5. Head lateral view. 6 – 7. S. minuta. 6. Head frontal view. 7. Head lateral view. 8 – 9. S. namibiensis spec. nov.. 8. Head frontal view. 9. Head lateral view. 10 – 11. S. parkeri spec. nov. 10. Head frontal view. 11. Head lateral view. 12 – 13. S. schlingeri spec. nov. 12. Head frontal view. 13. Head lateral view. 14 – 15. S. torrida. 14. Head frontal view. 15. Head lateral view.

FIGURES 32 – 35. Stenogephyra parkeri spec. nov.. 32. Male sternite 8, gonocoxite ventral view. 33. Aedeagus, lateral view. 34. Female sternite 8. 35. Female furca. FIGURES 36 – 39. S. schlingeri spec. nov.. 36 Male sternite 8, gonocoxite ventral view. 37. Aedeagus, lateral view. 38. Female sternite 8. 39. Female furca. FIGURES 40. Stenogephyra sp., female terminalia. FIGURES 41 – 43 S. torrida, pupa ventral view. 41. Female. 42. Close-up of antennal sheath, lateral view. 43. Male terminal segments. Scale = 0.1 mm.