Stomorhina lunata
In 3 days ~20% in a week ~40%
Stomorhina lunata is a species of fly in the family Rhiniidae first described by Johan Christian Fabricius in 1805. This species is present in most of Europe, the Afrotropical realm, the eastern Palearctic realm, the Near East and North Africa, the Indomalayan realm, and the Nearctic realm. These flies usually inhabit meadows.
Stomorhina lunata can reach a length of 5–9 millimetres (0.20–0.35 in) and a wingspan of 13–16 millimetres (0.51–0.63 in). These distinctive, medium-sized blowflies are rather similar to the house flies, but they have a characteristic prominent proboscis, a longitudinally striped thorax and an abdomen with yellow and black bands. Males have large orange patches on the sides of tergites 3 and 4, while females only show grey dust patches.
This distinctively marked species is often misidentified because of the unusual band pattern in the abdomen, typical of hoverflies. Stomorhina lunata is an important egg predator of some major African agricultural pests, the South African brown locust (Locustana pardalina), the more widespread desert locust (Schistocerca gregaria), and the migratory locust (Locustana... Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Sierra Nevada National Park | 🇪🇸 Spain | |
| 2 | Cévennes National Park | 🇫🇷 France | |
| 3 | Pyrénées National Park | 🇫🇷 France | |
| 4 | Sierra de Guadarrama National Park | 🇪🇸 Spain | |
| 5 | Wadden Sea National Park | 🇩🇪 Germany | |
| 6 | Table Mountain National Park | 🇿🇦 South Africa |
With luck
About 10% of wildlife watchers report a Locust Blowfly sighting in Cévennes National Park on a given day, based on 15 verified sightings from GBIF citizen-science data from 2019 to 2026. It is the 437th most-seen of the 996 insects we can rate there. Over three days the chance rises to about 20%, and over a week to about 40%, if each day is a fresh chance.
December
In that month about 20% of wildlife watchers report a Locust Blowfly in Cévennes National Park on a given day, against under 5% in January–May and October–November, the lowest months.
Between 10 am and 1 pm
Across all the parks we cover, that three-hour window holds the most Locust Blowfly sightings with a recorded time, and about 9 in 10 of them come between 6 am and 6 pm: it is a daytime animal.
Among the best
Of the 6 parks where we can rate Locust Blowfly sightings, Cévennes National Park ranks 2nd at about 10%, level with the leaders once rounded. The best odds are in Sierra Nevada National Park (Spain, about 10%).
Same order: Diptera
The closest relatives of the Locust Blowfly that you can see in Cévennes National Park (order Diptera, Flies) are Common Drone Fly (about 20%), Milesia crabroniformis (about 10%) and Beech Gall Midge (about 10%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the Locust Blowfly is recorded against all the insects logged in Cévennes National Park (15 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.
