Dacus (Leptoxyda) brunnalis, White, Ian M. & Goodger, Kim F. M., 2009

White, Ian M. & Goodger, Kim F. M., 2009, African Dacus (Diptera: Tephritidae); New Species and Data, with Particular Reference to the Tel Aviv University Collection, Zootaxa 2127, pp. 1-49 : 20

Dacus (Leptoxyda) brunnalis sp.n.

Figures 39 – 44 .

Diagnosis. As D. lounsburyii Coquillett, 1901 except: Thorax. Scutellum with a narrow basal dark margin (fig. 39). Wing. Cells bc slightly coloured (almost as dark as costal band); wing other than costal band and anal streak with a brownish tint, darkening posteriorly (fig. 44). Legs. Fore- and midfemora bicoloured (fig. 43).

Description. Size. Medium, wing length, 8.2 mm. Head (fig. 41). Pedicel+first flagellomere not longer than ptilinal suture. Face, antennal furrow with a dark spot; tear-drop shaped; occupying almost whole width and lower have of furrow. Frons, frontal setae 2, orbital setae 1. Thorax (figs 39, 42). Scutum predominantly dark red-brown, with a black mark anterior to notopleural xanthine and mesal of lateral vitta; postpronotal lobe yellow; notopleural callus yellow; notopleural xanthine wedge shaped (connected to notopleural callus); lateral (narrow) and medial postsutural vittae present. Scutellum without any dark patterning (except for narrow basal dark margin). Anepisternum with a stripe from notopleural callus to katepisternum; extended as a broad xanthine on katepisternum. Laterotergal xanthine confined to katatergite. Thoracic setae. Anterior notopleural seta present; anterior supra-alar seta absent. Wing (fig. 44). Basal cell bc without an almost complete covering of microtrichia; cell c with more than 75% covering of microtrichia; cell bm without microtrichia. Narrow subbasal raised section of cell br with extensive covering of microtrichia. Crossvein R- M beyond middle of cell dm. Costal band complete; deep, extending to vein R4+5 before wing apex; apically expanded into a large spot, reaching below vein M, and starts before end of vein R2+3. Anal streak present (colour extending beyond cell bcu). Cells bc and c slightly coloured (almost as dark as costal band). Without any crossbanding. Remainder of wing with a brownish tint, darkening posteriorly. Legs (fig. 43). Femora bicoloured (pale basally and red-brown in apical two-thirds to three quarters, dorsally; more extensively redbrown ventrally). Abdomen (fig. 40). Predominantly red-brown to fuscous, paler apically on tergite II and submedially on terga IV – V; terga I – V with a medial black stripe; shape as D. lounsburyii . Tergites I – V all fused. Male. Tergite III with pecten, dense microtrichia adjacent end A1+Cu2; hindtibia preapical pad apparently absent. Female. Unknown.

Etymology. Descriptive name for the brown (brunneus) colour over most of the wing (ala).

Material. Holotype male, CAMEROON: Mbalmayo, ix.2004, cue lure, M. Tindo ( MRAC).

Remarks. Closest to D. fuscovittatus Graham, 1910 , but differing from that species in the laterotergal xanthine being restricted to the katatergite and the longer narrower lateral vitta. Curiously, there is no indication of a raised tubercle near the apex of the male hind tibia, as normally seen in species with a pecten; however, there is flat area on which the setulae are finer than those on the rest of the tibia. The only other African species known to have a pecten but no hindtibia tubercle is D. notalaxus Munro, 1984 .

Figures

FIGURES 39 – 44. Dacus (Leptoxyda) brunnalis sp. n., holotype male. 39. Mesonotum, dorsal view. 40. Abdomen, dorsal view. 41. Head, anterior view. 42. Thorax, left lateral view. 43. Legs, left lateral view; fore, mid, hind. 44. Wing, dorsal view. Scale lines = 1 mm.