Haematopota duttoni Newstead, Dutton & Todd, 1907

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

Haematopota duttoni Newstead, Dutton & Todd, 1907 Fig. 3J

Location.

Shimba Hills, Kenya.

Descriprion.

Head. Head wider than thorax with vertex at the posterior distinctly concave (Suppl. material 2: Figure S10A). Black eyes with brightly coloured zig-zag bands that fade on preservation. Eyes separated by wide frons; anterior third (1/3) of frons brown with brown and black hair, posteriorly blackish grey with whitish grey hair. Frontal callus shiny brown, wider than long, spanning entire width of frons. Pair of round dark brown purplish velvety spots above frontal callus at either side towards lateral margins of frons. Below frontal callus velvety dark brownish black sub callus. Below vertex of frons medially small black round velvety spot (Suppl. material 2: Figure S10B). Antennae typical of genus Haematopota ; three segments dark brown with black and few short white hairs. Scape long and slightly wide, pedicel globular with anterior spike-like projection. Flagellum long and slender with three black annulations that have fine black hair. Second palpal segment elongate, light brown with white and black hair. Labellum dark brown (Suppl. material 2: Figure S10C).

Thorax. Thorax greyish brown with black and white hair. Median and sub lateral stripes whitish and run down to the posterior end of thorax. Fore tibia laterally flattened and dark brown with black and (few) white hair. Fore femur dark brown with black hair. Hind tibia dark brown with black and white hair; hind femur dark brown with black hair. Middle legs resemble hind legs. Tarsi of all legs dark brown with black hair. Wing is brown and mottled characteristic of genus, with typical basicosta with sharp projection and costa covered with short black hair without longitudinal groove. Wing with brown patterns (descriptive of species H. duttoni ) and right-angled thick white line (shaped as “7”) running from vein A1 towards wing margin. Wing vein R4 with long appendix (Fig. 4E , Suppl. material 2: Figure S10D). Halteres yellowish white centrally and progressively darken to light brown and then to darker brown at margin. Stalk of halteres yellowish white.

Abdomen. Abdomen dark brownish black without patterns and with black and white hair and lateral margins almost parallel to each other. Ventrally, abdomen ashy grey with black hair. Median part dark brown with fine white hair (Suppl. material 2: Figure S10A).

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).