Afropeza pappi, Sinclair & Shamshev, 2012

Sinclair, Bradley J. & Shamshev, Igor V., 2012, Afropeza, a new South African genus (Diptera: Empidoidea: Brachystomatidae), with description of three new species, African Invertebrates 53 (1), pp. 239-239 : 243-244

Afropeza pappi sp. n.

Figs 1 , 4–6

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Diagnosis: This species is characterised by the length of the postpedicel being 0.8× width of eye; pleura clothed in pruinescence; male terminalia symmetrical with stout, U-shaped cerci bearing pair of spine-like apical setae, inner margin of surstyli with ribbed inner posterior surface.

Description:

Male.

Head: Antenna with postpedicel 0.8× width of eye (in lateral view); stylus comprising only spine-like apical mechanoreceptor.

Thorax: Pruinescent lateral band extending from postpronotal lobe to postalar callus; scutellum and anterior margin of scutum between postpronotal lobes clothed in pruinescence; pleura normally thinly clothed in pruinescence. Acrostichal setae on prescutellar depression biserial, erect and directed anteriorly.

Legs: Mostly pale yellow, except base of fore coxa darkened; tarsi gradually darkening towards apex.

Wing ( Fig. 4 ): Length 2–2.5 mm. Haltere knob and distal half of stem dark; proximal half of stem pale yellow.

Abdomen: Ventral setae pale, dorsal setae dark; tergite 8 narrowed medially, widely expanded towards lateral margin, symmetrical, lacking setation; sternite symmetrical. Male terminalia ( Figs 5, 6 ): Symmetrical, held erect at apex of abdomen, strongly U-shaped in posterior view. Cerci heavily sclerotised, fused together to form U-shaped process (resembling subgenus Planempis Frey, 1953 of Empididae ), bearing pair of spine-like apical setae and 2 or 3 long lateral setae. Epandrium elongate and slender, dorsally directed. Surstylus comprising single lobe, with inner posterior subapical surface ribbed; inner apex with pair of hook-like processes, anterior processes sharply pointed. Hypandrium with uniquely beak-shaped gonocoxal apodeme, expanded dorsally and sharply attenuated ventrally; hypandrium slender, arched, terminating in pair of hook-like processes. Postgonite closely approximated with phallus; apex with crown of setulae and stout setae. Phallus arched and attenuated apically to narrow posterodorsally directed tube-like opening; ejaculatory apodeme enlarged and prolonged in horizontal plane, more than half length of phallus.

Female. Similar to male, except abdominal setae paler, especially toward posterior segments.

+RORW\SH:ƃ ³6.$)5:.=1:5R\DO 1DWDO / 1DW.5HV., *XGX)RUHVW / Íϭ8 0–1730 m; MT / 28°40.90’S 28°55.78’E / 22.ix.–17.xi.2006 / M. Mostovski leg.” ( NMSA) .

Paratypes: SOUTH AFRICA: KwaZulu-Natal: ƃ 8Ƃ VDPH GDWD DV KRORW\SH (ƻƃ 7Ƃ 106$, Íƃ ÍƂ &1&); ÍƂ VDPH DV KRORW\SH,H[FHSW Í.[LL.ƻθθ 5 ±ƻ8.L.ƻθθϭ (106$); Íƃ 1 Ƃ VDPH DV KRORW\SH,H[FHSW ƻ9.L±ƻ8.Y.ƻθθϭ (106$); ƃ 7Ƃ VDPH DV KRORW\SH, H[FHSW Í8.[L.ƻθθ 6 ±ƻ7.LL.ƻθθ7 (106$); ƻƃ 1 'UDNHQVEHUJ, DORQJ L0SRIDQH 5LYHU,ƻ9°θ ‵Íƻ.7"6 ƻ9°ƻ ‵θϭ.ƻ"(, Íƽ Í P, ƻ9.L.ƻθθ7, /. 3DSS & 0.)| OGYiUL,1R. 4ƻ (+1+0); Íƃ Majuba Area, 27°28.6'S 29°49.1'E, 1700 m, 29.i.1998, S. James, indigenous forest nr Majuba ( NMSA).

Figures

Fig. 1. Habitus photograph of Afropeza pappi sp. n. Scale bar = 1.0 mm.

Figs 2–4.(2, 3) Afropeza silvatica sp.n.: (2) antenna, lateral view;(3) mouthparts, lateral view; (4) Afropeza pappi sp. n., wing. Abbreviations: hyphar – hypopharynx, lab – labium, lbr – labrum, lc – lacinia, M – medial vein, plp – palpus, R – radial vein. Scale bars: Figs 2, 3 = 0.1 mm; Fig. 4 = 0.5 mm.

Figs 5, 6. Afropeza pappi sp. n., male terminalia: (5) lateral view; (6) cerci, anterior view. Abbreviations: cerc – cercus, ej apod – ejaculatory apodeme,epand – epandrium, goncx apod – gonocoxal apodeme, hypd – hypandrium, pgt – postgonite, ph – phallus, sur – surstylus. Scale bars = 0.1 mm.