Madiza africana, Brake & Papp & Bd, 2009

Brake, I., Papp, L. & Bd, Uk., 2009, A Peculiar New Species Of Madiza (Diptera: Milichiidae) From Tanzania, Acta Zoologica Academiae Scientiarum Hungaricae 55 (3), pp. 227-234 : 228-231

Madiza africana sp. n.

( Figs 1–13 )

Holotype male ( HNHM): Tanzánia, Lake Natron , 1988. II. 6., leg. VOJNITS . Paratypes: 1 male

4 female ( HNHM, 1 female in NHM): with the same label data .

Measurements in mm: body length 2.20 (holotype), 2.48 (paratype male), 2.91–3.52 (paratype females), wing length 2.20 (holotype), 2.59 (paratype male), 3.03–3.52 (paratype females), wing width 0.95 (holotype), 1.03 (paratype male), 1.29–1.37 (paratype females).

A comparatively large-bodied fly of Madizinae . Body and legs dark grey microtomentose.

Head. Cheek, prefrons and pregena greyish yellow. Palpus mainly dirty yellow, with apical and ventral margins grey, on outer surface this colour occupies 0.06–0.07 mm.

Two pairs of mesoclinate frontal setae anteriorly, 2 lateroreclinate anterior orbital setae and a slightly mesoclinate very long posterior orbital seta (0.24 mm long). A very large (0.20 mm long) parallel postocellar pair present. Ocellar, outer and inner vertical pairs rather long. Some small additional setulae lateral to frontal setae down to cheeks. Frons without interfrontal stripes, i.e. without an M shaped area. 4 pairs of medium-long interfrontals, and an additional similarly long seta present between anterior interfrontal and frontal seta. Lunule not extended ventrally as a flat plate between antennae, with 1 pair of distinct setae. Prefrons concave, below antennae not much more deepened; no carina. Clypeus very small, but Π- shaped rather than U-shaped anteriorly, slightly protruding before the protruded prefrons. Vibrissa inserted at level of lower eye margin, 2 large upcurved peristomals, other 2 large ventrally directed peristomals and some shorter peristomals. Gena below eye 0.08 mm broad. Genal setae on postgenal border (or on postgena) only. Postocular setae short.

Antenna short, pedicel with a long dorsal apical seta. First flagellomere globular, arista c. 0.4 mm long, basal aristomeres thickened. Aristal cilia somewhat longer than 0.01 mm. Palpus short, broad with several medium-long but thick setae. Proboscis without labella 0.33 mm, labella 0.275 mm long.

Thorax. Basisternum broadly trapezoid, more similar to that of Madiza ( BRAKE 2000: Pl. 8B) than to basisternum of Desmometopa ( BRAKE 2000: Pl. 8A). A pair of small lateral secondary sclerites (0.05 to 0.07 mm broad) also present.

Thoracic chaetotaxy: 1 large postpronotal, 2 notopleural, 1 presutural, 1 short prealar, 1 supra-alar (or, 2 supra-alar pairs), 1 extremely long postalar (0.60 mm), 1 less long medial postalar, 0+3 dorsocentral pairs, anterior pair shorter and aligned with posterior notopleural, 1 prescutellar acrostichal pair. Anepisternum and anepimeron bare. 1 minute supracoxal, 2 long katepisternals plus some short katepisternals anteriorly; no other seta on pleura. Anepisternum anteriorly and ventrally with an obliquely quadratic shiny black spot: 0.20 mm long and 0.07 to 0.09 mm broad (holotype), on a female paratype 0.33 × 0.13 mm. Both ampullae below wing base comparatively large, dorsal one longish, oblique, proclinate, ventral (“greater”) one bulbous.

Wing. Wing membrane light brown, veins slightly darker but still light brown. Fringe of calypter dark grey. R 1 emargination narrow. Veins R 2 +3, R 4 +5 and M 1 parallel, stronger costal fringe of 4–5 thornlets occupying only 1/5 of third costal section. Inter-crossvein section of M 1 0.31 mm, dm-cu 0.185 mm, terminal section of CuA 1 0.31 mm. Costagial setae: dorsal 0.22 mm, ventral 0.14 mm (holotype) up to 0.285 mm and 0.23 mm (paratype female). A large costal seta over vein h 0.10 mm (holotype). Anal lobe liguliform, 0.15 mm broad at base. No anal vein distal to anal cell: a rather thick fold running close to wing margin discernible. Haltere brownish grey .

lateral view; 8 = ejaculatory apodeme, broadest (ventral) view. Scale: 0.1 mm for all

Legs. Mid tibia with a strong ventroapical seta, no other characteristic setae on legs. Hind tibia without tibial organ. Male hind tibia not enlarged. First tarsomere of hind leg without a posterior comb of ventral setae.

Abdomen. Abdominal tergites of male with dark grey microtomentum. Tergites 1 and 2 with narrow membranous area between them laterally, wholly fused on lateral parts of dorsal surface and with a 0.31 mm broad membranous area medially. Male tergites 4 and 5 with socketed warts anteriorly ( Fig. 3 ). Length of normally setose caudal part of tergite 5 0.42 mm, section with warts medially 0.10 mm, laterally 0.065 –0.075 mm long. Tergite 4 with similarly broad warts zone and with 0.35 mm long normal surface. Male sternite 1 in 2 parts, microtrichose only ( Fig. 1 ), sternite 2 quadrate with medium-long setae laterally and with 2 pairs of longer setae caudally. Sternite 3 longer than broad. Sternite 4 and 5 much longer than broad with scattered setae ( Fig. 2 ).

Postabdomen and genitalia. Male syn(tergo)sternite 7–8 not completely symmetrical ( Fig. 7 ). Epandrium ( Fig. 4 ) saddle-shaped dorsally, antero-laterally with a pair of large, well-sclerotised lobes ( Figs 4–5 ) and with robust but not particularly long setae, rather far from medio-caudal margin. Surstylus very large, completely fused to epandrium, with fine setae only ( Figs 4–5 ), medial edge with fine indentations ( Fig. 5 ). Cercus large but weakly sclerotised. Subepandrial sclerite short sagittally ( Fig. 5 ). Hypandrial complex ( Figs 9–10 ) not much longer than broad, hypandrial arms robust, pregonites rather flat (in the horizontal plane). Basiphallus better sclerotised ( Fig. 6 ), distiphallus bulbous membranous. Ejaculatory apodeme ( Fig. 8 ) positioned in the main axis of abdomen, long slightly asymmetrical, in ventral view broadened sub-medially; that extended part with fine holes.

Female sternite 5 much longer than broad, with a pair of particularly strong caudal appendages. Female tergites 4 and 5 without socketed warts anteriorly. Female ovipositor rather long ( Fig. 11 ), sternites 5 and 6 with long introsuscepted caudal apodemes (serving insertion points for muscles when postabdomen inverted). Tergite 8 not divided, sternite 8 in 3 parts ( Figs 11–13 ). Cerci not elongated, with medium-long setae. Spermathecal ducts tightly coiled together, similar to Madiza glabra (see BRAKE 2000: Pl. 24E).

Figures

Figs 1–3. Madiza africana sp. n., paratype male, abdomen. 1 = sternites 1 to 3, ventral view, 2 = sternites 4 and 5,ventral view, 3 =mid anterior part oftergite 5. Scale:0.2 mm forFigs 1–2, 0.1 mm forFig.3

Figs 4–8. Madiza africana sp. n., paratype male: 4 = genital complex with epandrium and cercus, lateral view; 5 = epandrium, surstyli and subepandrial sclerite, ventral view; 6 = phallus, basiphallus in ventral view, knob of distiphallus in lateral view; 7 = syntergosternite 7–8 with spiracular openings,

Figs 9–10. Madiza africana sp. n., paratype male.9–10 = hypandrial complex: 9 = ventral view, 10 = lateral view. Scale 0.1 mm

Figs 11–13. Madiza africana sp. n., paratype female:11 = postabdomen with sternite 5 and margin of tergite 5, ventral view, segment 8 twisted, hypoproct, epiproct and cerci in lateral view; 12 = postabdominal sclerites in higher magnification, dorsal view, 13 = terminalia, ventral view, cf. Fig. 12. Scales: 0.4 mm for Figs 11 & 13, 0.2 mm for Fig. 12