Tabanus gratus
In 3 days ~10% in a week ~20%
Tabanus gratus is a species of horse fly in the family Tabanidae. Originally described as Tabanus gratus in 1858 by Hermann Loew from a female specimen collected in South Africa as Caffraria. Afrotropical and Palearctic species. Widespread in Africa, penetrating the Palearctic realm through the East Mediterranean from Egypt and Cyprus, through Western Saudi Arabia and the Levant to Iran and Afghanistan.
Known hosts in Europe and the Levant are horses and camels, in Africa—horses and cattle. In Africa this species is an important vector for Trypanosoma parasites causing the disease surra. Surra is a major disease in camels, equines, cattle and dogs, in which it can often be fatal. Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Kruger National Park | 🇿🇦 South Africa |
More parks will be added in future updates.
Rare
Under 5% of wildlife watchers report a Tabanus gratus sighting in Kruger National Park on a given day, based on 5 verified sightings from GBIF citizen-science data from 2019 to 2026. It is the 656th most-seen of the 748 insects we can rate there. Over three days the chance rises to about 10%, and over a week to about 20%, if each day is a fresh chance.
October
In that month about 10% of wildlife watchers report a Tabanus gratus in Kruger National Park on a given day, against under 5% in November to September, the lowest months.
Between 10 am and 1 pm
Across all the parks we cover, that three-hour window holds the most Tabanus gratus sightings with a recorded time, and about 6 in 10 of them come between 6 am and 6 pm: it is seen both by day and at night.
Only Kruger National Park, in our data
Kruger National Park is the only park on Wallace's Line with enough records to rate Tabanus gratus sightings: under 5% of wildlife watchers there report one on a given day.
Same genus: Tabanus
The closest relatives of the Tabanus gratus that you can see in Kruger National Park (genus Tabanus, True Horse Flies) are Hippo Fly (about 10%) and Tabanus taeniola (about 10%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the Tabanus gratus is recorded against all the insects logged in Kruger National Park (5 verified sightings from 2019 to 2026), calibrated against known sighting rates. Figures are rounded to the nearest 10% because citizen-science data supports honest approximations, not decimals, and months with records from fewer than five people show "—". How it works.
