Tabanus fraternus Macquart, 1846 - Identification

Gray-brown, thorax with white lines. Abdomen brown-rufous with brown central longitudinal band, marked with three whitish triangles on the second, third and fourth segments. Abdominal segments 5-7 darker than segments 1-4. Wings greyish-hyaline, with brown-shaded transverse veins.
It is easily confused with Tabanus taeniola but has only three distinct median abdominal triangles.

Description by Macquart:
https://www.biodiversitylibrary.org/item/53417#page/35/mode/1up

Description by Loew (Tabanus trisignatus):
https://www.biodiversitylibrary.org/item/35325#page/57/mode/1up
with illustration of abdomen (fig 20): https://www.biodiversitylibrary.org/item/35325#page/351/mode/1up

Description by Walker (Tabanus bipartitus):
https://www.biodiversitylibrary.org/item/132891#page/455/mode/1up

Illustration in Austen:
https://www.biodiversitylibrary.org/item/75729#page/259/mode/1up

Illustration of wing in:
Lamerton, J. F. 1962. Key to the Tabanidae of Tanganyika. E. Afr. agric. J. 28 ( 1 ) : 40-54

Distributed from South Africa (several records from KZN) to Ethiopia.

iNat observations:
https://www.inaturalist.org/observations/18716714
https://www.inaturalist.org/observations/42246616

Posted on 04 de agosto de 2023, 04:05 PM by traianbertau