Stomorhina lunata
In 3 days ~20% in a week ~50%
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 Barcelona on a given day, based on 52 verified sightings from GBIF citizen-science data. It is the 90th most-seen of the 381 insects we can rate there. Over three days the chance rises to about 20%, and over a week to about 50%, if each day is a fresh chance.
October and November
In those months about 20% of wildlife watchers report a Locust Blowfly in Barcelona on a given day, against under 5% in February, April and June–July, the lowest months. Those are among Barcelona's wettest months, with about 80 mm of rain a month against 35 mm in December.
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.
Yes
Of the 13 cities where we can rate Locust Blowfly sightings, Barcelona has the highest daily chance: about 10%. Next come Lyon (France, about 10%) and Cologne (Germany, about 10%).
GBIF citizen-science records
It is estimated from how often the Locust Blowfly is recorded against all the insects logged in Barcelona (52 verified sightings), 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.
