Dacus (Lophodacus) senegalensis, 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 : 26

Dacus (Lophodacus) senegalensis sp.n.

Figures 52 – 57 .

Diagnosis. Differs from D. apoxanthus Bezzi, 1924 b in having a narrow anterior margin of microtrichia within the narrow subbasal section of cell br, a complete narrow costal band (fig. 57), and distinct xanthines (postpronotal lobe, notopleural wedge, scutellum, katatergite and katepisternum; figs, 52, 55). It is very similar to D. chamun Munro, 1984 , from Yemen, from which it differs in having enlarged setae on the basal costal section (they are only slightly enlarged in D. chamun ), no expansion of the basal reddish scutellar margin into a shallow triangle, and a katepisternal xanthine.

Description. Size. Small, wing length, 4.8 mm. Head (fig. 54). Pedicel+first flagellomere not longer than ptilinal suture. Face, antennal furrow with a dark spot, round, about as high as broad. Frons, frontal setae 2, orbital setae 1. Thorax (figs 52, 55). Scutum predominantly red-brown; postpronotal lobe yellow; notopleural callus yellow; notopleural xanthine wedge shaped (connected to notopleural callus); lateral and medial postsutural vitta absent. Scutellum without any dark patterning (except for basal red-brown margin). Anepisternum with a yellow stripe from notopleural callus to katepisternum; extended onto katepisternum and expanded posteriorly. Laterotergal xanthine confined to katatergite. Thoracic setae. Anterior notopleural seta absent; anterior supra-alar seta absent. Wing (fig. 57). Basal cells bc and c without an almost complete covering of microtrichia; cell bm without microtrichia. Narrow subbasal raised section of cell br with microtrichia confined to anteriorly half. Crossvein R-M beyond middle of cell dm. Costal band complete; shallow, not or only slightly extending below vein R2+3 before wing apex; expanded at apex into a small but distinct spot. Anal streak absent. Cells bc and c hyaline. Without any crossbanding. Legs (fig. 56). Femora pale to barely discernably bicolored (yellow, pale brown apically); forefemur sometimes only slightly darkened preapically. Abdomen (fig. 53). Predominantly fulvous; tergite II yellow in most of apical half; terga I – IV with a trace of a narrow red-brown medial strip, continuing onto tergite V as a narrow black stripe. Tergites I – V all fused. Male. Tergite III without pecten; no dense microtrichia adjacent end A1+Cu2; no hindtibia preapical pad. Basal costal section (costagium) with thickened setae. Female. Unknown.

Etymology. Geographic name meaning from Senegal.

Material. Holotype male, SENEGAL: Richard Toll, 25 – 35km S., 18.viii.1989, H.C.G. v.d. Valk (authors borrowed from TAU; specimen from collection of late R. van Aartsen whose collection now belongs to ZMAN; final depository will rest with the collection manager of TAU).

Remarks. This species only differs from D. xanthinus sp.n. in having the narrow margin of microtrichia in the narrow subbasal section of cell br, and the distinct costal band.

Figures

FIGURES 52 – 57. Dacus (Lophodacus) senegalensis sp. n., holotype male. 52. Mesonotum, dorsal view. 53. Abdomen, dorsal view. 54. Head, anterior view. 55. Thorax, left lateral view. 56. Legs, left lateral view; fore, mid, hind. 57. Wing, dorsal view. Scale lines = 1 mm.