Permixtolimosina sexsetosa, Papp, László, 2014

Papp, László, 2014, New genera of Afrotropical limosinine sphaerocerids (Diptera: Sphaeroceridae), Zootaxa 3764 (2), pp. 101-130 : 122

Permixtolimosina sexsetosa sp. nov.

( Figs 75–87 )

Type material. Holotype male ( BMSA): Malaise traps, broad-leaved deciduous woodland—RSA: KZN, Ndumu Game R., main camp area at: 26° 54.652’ S, 32° 19.719’E, 27–30. xi. 2009, A.H. Kirk-Spriggs—Entomology Dept., National Museum, P.O. Box 266, Bloemfontein 9300 South Africa. BMSA (D) 14218.

Paratypes: 3 males 4 females ( BMSA, 1 male 1 female ( HNHM): data same as for holotype.

Description. Measurements in mm: body length 1.47 (holotype), 1.15–1.55 (paratypes); wing length 1.25 (holotype), 1.12–1.60 (paratypes); wing width 0.51 (holotype), 0.48–0.58 (paratypes).

Head dark brown, anterior 1/3 of frons reddish. Facial plate short, ventral part strongly protruding. Lunule rather large and continued in a flat facial ridge. First flagellomere rounded, as long as high, not longer than pedicel. Head setae comparatively short. 4–5 pairs of short interfrontal setae. Postocellar seta rather strong proclinate. Anterior fronto-orbital seta 2/3 as long as posterior pair but much thinner. A row of ventrally directed subocular setae present. Genal seta distinct but not long but other 3(4) genal setae behind it. Eye comparatively small, eye height in profile 0.20 mm, genal width below eye 0.10 mm.

Thorax. Mesonotum shiny dark brown. 1 posterior 0.15 mm long dorsocentral seta only. Prescutellar acrostichal seta 0.10 mm long. Also a second anterior postpronotal seta discernible. Acrostichal microchaetae sparse, 4–6 rows between dorsocentral lines. Basal (3rd) pair of scutellar setae of 0.08 mm present. 2 subequal katepisternals of 0.10 mm and 0.11 (0.12) mm.

Wing membrane grey with some yellowish reflection. Humeral vein dorsally with a strong seta of 0.06 mm, paired with a similar seta on costa and a long perpendicular setae on humeral crossvein and 3–4 perpendicular long (up to 0.10 mm) setae on first costal section. Fringe on first section of costal vein twice longer than that on its second section. First and second sections thickened. Second section longer than third (0.39 mm vs. 0.30 mm). Vein R4+5 strongly upcurved, costa distinctly overruns apex of R4+5. Intra-crossvein section of M1+2 0.175 mm, M-M crossvein 0.075 mm. Lower edge of discal cell slightly more than 90°, with a short vein appendage. Alula small (0.10 mm) rather broad, apex broadly rounded.

Legs. Mid femur without enlarged seta ventrally. Mid tibia without a ventral row of setae in apical 1/3. Mid tibia with a long ventroapical seta (0.075–0.08 mm), also a distinct mid ventral seta present. Mid basitarsus short (0.21 mm), 1 stronger and thicker seta developed in the posteroventral row at basal 2/7. Armature of mid tibia: 2 anterodorsals at 10/29 and 21/29 (in some specimens also a short one at 8/29), 1 dorsal seta at 23/29, 1 posterodorsal seta at 23/29, i.e. no seta posterodorsally other than the subapical one.

Abdomen. Abdominal tergites shiny, sternites about half as broad as tergites.

Male genitalia as described under the genus.

Female tergite 1+2 large, 0.37 mm long, sternite 2 minute with a pair of short caudal setae. Sternite 3 to sternite 5 sparsely setose, shield shaped with 2 pairs of caudal setae each. Sternite 6 broader than long, with similar setae. Female abdominal tergites weak: width/length ratios are as follow: 3rd: 45/11, 4th: 32/10, 5th: 32/12, 6th: 26/11 (i.e. less broad than sternite 6).

Etymology. The specific epithet (Latin ‘sexsetosa’ = with 6 setae) refers to the 3 pairs of marginal scutellar setae of the new species.

Figures

FIGURES 75 – 82. Permixtolimosina sexsetosa sp. n., male postabdomen and genitalia. 75 = sternite 5, in a view perpendicular to the plane of process, i. e. body of the sternite seems to be shortened, 76 = medio-caudal part of sternite 5 in higher magnification, 77 = synsternite, ventral view, 78 = hypandrium, ventral view (processes to postgonites are black), 79 = subepandrial sclerite with contours of epandrium, inner (anterior) view, 80 = surstylus, ventral view, 81 = surstylus, lateral (= broadest) view, 82 = phallus, postgonite and phallapodeme, left lateral view. (BPh: basiphallus, bD: basal part of distiphallus, dD: distal part of distiphallus). Scale bars: Figs 75, 77 – 78 = 0.2 mm, Figs 76, 79 – 82 = 0.1 mm.

FIGURES 83 – 87. Permixtolimosina sexsetosa sp. n., female postabdomen and genitalia. 83 = tergite 8, epiproct and cerci with contours of hypoproct, subdorsal view, epiproct is slightly oblique in this view, 84 = sternite 8 and hypoproct, ventral view, 85 = female terminalia, lateral view, 86 = spectacles-shaped sclerite, ventral view, 87 = spermathecae. (ep: epiproct, hy: hypoproct, sps: spectacles-shaped sclerite, S 8: sternite 8, T 8: tergite). Scale bars: Fig. 85 = 0.2 mm, Figs 83 – 84, 86 – 87 = 0.1 mm.