Chrysops distinctipennis Austen, 1906

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

Chrysops distinctipennis Austen, 1906 Fig. 3L

Location.

Wakiso, Uganda

Descriprion.

Head. Head as wide as thorax with black eyes separated by greyish black frons. Frons widens slightly towards antennae with black and long white standing hair (Suppl. material 2: Figure S13A). Callus black and glossy. Basal callus wider than long and rectangular shaped; upper callus with three black ocelli arranged in triangular pattern (two lateral and one median ocellus). Antennae black, long and slender with black hair. Scape and pedicel equal in length and longer than in C. brucei (Suppl. material 2: Figure S13B); flagellum has 4 annulations. Second segment of palpus brownish black, slender with black hair; black labellum.

Thorax. Thorax black with black and white hair, no evident stripes. Tufts of golden yellow hair at postalar callus and at notopleural and humeral lobes (Suppl. material 2: Figure S3B). Halteres black with black stalk. Legs brown with black hair; fore tibia darker brown shade and black distally; tarsus of fore leg black with black hair; tarsi of middle and hind legs brown with black hair. Femurs of all legs black proximally and distally. Clear wing with longitudinal dark brown band that bifurcates into two smaller bands that reach posterior wing margin (Suppl. material 2: Figure S13C).

Abdomen. Abdomen black with black hair and parallel lateral sides; posterior border of each segment distinctly grey. Seventh segment rather rounded (Suppl. material 2: Figure S13C). Ventral surface black with long fine whitish hair.

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).