Tabanus donaldsoni Carter, 1912

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 donaldsoni Carter, 1912 Fig. 3C

Location.

Muhaka, Kenya.

Descriprion.

Head. Head wider than thorax. Eyes dark green in freshly collected insects (Fig. 4C , Suppl. material 2: Figure S3A), but turn black after storage and separated by brown narrow frons with black and white hair. Callus brown; lower callus round-oval and projects upward in form of thick line (Suppl. material 2: Figure S3B). Antennae golden brown (typical of the genus Tabanus ). Scape with white hair at base with black hair anteriorly. Small pedicel with short white hair all over and black hair only at anterior border. Palpus (lp) yellowish white with white and black hair; labellum golden brown (Suppl. material 2: Figure S3C).

Thorax. Thorax blackish brown with white and black hair. Median stripe not seen, sub-lateral stripes light brown and indistinct (only seen up to middle of thorax). Halteres yellowish brown. Wing clear and R4 on the wing has prominent appendix (px). Tufts of white hair (hf) near postalar callus indistinct (Fig. 4C , Suppl. material 2: Figure S3D). Fore tibia and fore femure yellowish brown, fore tibia covered with white and black hair, fore femur with only white hair. Fore tarsus light brown with black and white hair. Hind and middle legs similar to forelegs (Suppl. material 2: Figure S3E).

Abdomen. Golden-brown dorsal and ventral surfaces of abdomen without patterns but have black and white recumbent hair (Suppl. material 2: Figure S3A).

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).

Figure 4. Key morphological features of sampled tabanid species. A Ancala fasciata B Tabanus donaldsoni green eyes (in fresh sample) C Tabanus donaldsoni, wing with distinct R 4 appendix (px), indistict hair tuft (hf) D Atylotus nigromaculatus, wing with short, clear appendix on R 4 E Haematopota duttoni, mottled wing with a right angled white thick line (in black circle) between vein A 1 and the wing margin, the R 4 has a long appendix F Haematopota fenestralis, shiny black callus on frons, eyes have bright coloured bands G Chrysops brucei, lateral view of head showing the antenna, black mouth parts and brown legs (partial).