Chrysotoxum festivum
In 3 days ~10% in a week ~30%
Chrysotoxum festivum is a species of hoverfly. External images For terms see Morphology of Diptera Wing length 8·25–12 mm. Wing with a small, square, dark spot. Thorax with two grey longitudinal stripes. Katepisternum normally with yellow spot. Apical antennomere shorter than antennomeres 1 and 2 together.
Keys and accounts Coe R.L. (1953) Syrphidae Van Veen, M. (2004) Hoverflies of Northwest Europe Van der Goot, V.S. (1981) De zweefvliegen van Noordwest - Europa en Europees Rusland, in het bijzonder van de Benelux Bei-Bienko, G.Y. & Steyskal, G.C. (1988) Keys to USSR insects. Diptera
Palaearctic Fennoscandia South to Iberia and the Mediterranean basin. Ireland eastwards through Europe into Greece, Turkey and European Russia then through Siberia to the Pacific coast. Japan. North India. Habitat :Deciduous woodland clearings and open areas in scrub woodland. Grassland with scrub. Flowers visited include white umbellifers, Calluna, Chaerophyllum, Cirsium arvense, Euphorbia, Galium, Hieracium, Hypochoeris, Narthecium, Origanum, Potentilla erecta, Ranunculus, Rosa rugosa, Rubus idaeus, Sambucus nigra, Senecio, Solidago canadensis... Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Pyrénées National Park | 🇫🇷 France |
More parks will be added in future updates.
| # | City | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Manchester | 🇬🇧 United Kingdom | |
| 2 | Liverpool | 🇬🇧 United Kingdom | |
| 3 | Birmingham | 🇬🇧 United Kingdom | |
| 4 | London | 🇬🇧 United Kingdom | |
| 5 | Leeds | 🇬🇧 United Kingdom | |
| 6 | Stockholm | 🇸🇪 Sweden | |
| 7 | Warsaw | 🇵🇱 Poland | |
| 8 | Helsinki | 🇫🇮 Finland | |
| 9 | Copenhagen | 🇩🇰 Denmark | |
| 10 | Saint Petersburg | 🇷🇺 Russia |
Rare
Under 5% of wildlife watchers report a Hook-Barred Spearhorn sighting in Stockholm on a given day, based on 6 verified sightings from GBIF citizen-science data. It is the 144th most-seen of the 202 insects we can rate there. Over three days the chance rises to about 10%, and over a week to about 30%, if each day is a fresh chance.
June to August
In those months about 10% of wildlife watchers report a Hook-Barred Spearhorn in Stockholm on a given day, against under 5% in September to May, the lowest months.
Between 9 am and noon
Across all the parks we cover, that three-hour window holds the most Hook-Barred Spearhorn sightings with a recorded time, and nearly all of them come between 6 am and 6 pm: it is a daytime animal.
6th of 11
Of the 11 cities where we can rate Hook-Barred Spearhorn sightings, Stockholm ranks 6th at under 5%. The best odds are in Manchester (United Kingdom, about 10%), Liverpool (United Kingdom, about 10%) and Birmingham (United Kingdom, about 10%).
Same family: Syrphidae
The closest relatives of the Hook-Barred Spearhorn that you can see in Stockholm (family Syrphidae, Hover Flies) are Marmalade Hover Fly (about 10%), Sun Fly (about 10%) and Common Drone Fly (about 10%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the Hook-Barred Spearhorn is recorded against all the insects logged in Stockholm (6 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.
