Tabanus thoracinus Palisot de Beauvois, 1806

Mugasa, Claire M., Villinger, Jandouwe, Gitau, Joseph, Ndungu, Nelly, Marc Ciosi, & Masiga, Daniel, 2018, Morphological re-description and molecular identification of Tabanidae (Diptera) in East Africa, ZooKeys 769, pp. 117-144 : 117

Tabanus thoracinus Palisot de Beauvois, 1806 Fig. 3B

Location.

Shores of Lake Victoria, Uganda

Two genetic variants, that could not be distinguished on the basis of the morphological keys identified in the present study.

Descriprion.

Head. Head wider than the thorax (Suppl. material 2: Figure S2A) with yellowish white parafacial hair (pf). Eyes dark green (when freshly collected, before drying) without a band, separated by brown narrow frons with black and white hair. Antennae golden-brown (typical of Tabanus ). Scape with white hair at base and black hair anteriorly, thus appearing to have a black tip (Suppl. material 2: Figure S2B). Small pedicel with short white hair all over and black hair only at anterior border. Callus (cs) brown; basal callus round-oval and projects upward tapering to form a thick black line (Suppl. material 2: Figure S2C). Palps yellowish white with white and black hair; labellum brown (Suppl. material 2: Figure S2B).

Thorax. Thorax blackish brown with white and black hair and invisible median stripe, sub-lateral stripes indistinct light brown only to middle of thorax. Wing clear and R4 does not have appendix (Suppl. material 2: Figure S2A). Fore tibia and fore femur yellowish brown; fore tibia covered with white and black hair, fore femur with white hair (Suppl. material 2: Figure S2D). Fore tarsus light brown with black and white hair. Hind and middle legs similar to forelegs. Halteres yellowish brown. Indistinct tufts of white hair near postalar callus.

Abdomen. Dorsal and ventral surfaces of abdomen orange-brown without patterns, have black and white recumbent hair. Ventral surface may have black hair concentrated on second last segment that appears as dark patch (Suppl. material 2: Figure S2A).

Figures

Figure 3. Whole tabanid flies. A Ancala fasciata, discal cell (dc) B Tabanus thoracinus, discal cell (dc), haltare (ht) C Tabanus donaldsoni, distinct R 4 appendix (px) D Tabanus taeniola, median stripe (ms), parafacial hair (pf), antennae (at), labellum (lbl), palpus (lp) E Tabanus taeniola variatus, medial triangles (mt), peri-median bands (pm) F Tabanus gratus, haltares (ht), comma shaped shades (cm) G Tabanus guineensis H Atylotus nigromaculatus, eyes with thin black horizontal line (hl) I Atylotus diurnus, haltares (ht), wing with indistinct appendix (px) J Haematopota duttoni K Haematopota fenestralis, double white streak (ds) L Chrysops distinctipennis, hair tufts (hf), bifurcating band (bf).