Distoleon tetragrammicus
In 3 days ~10% in a week ~30%
Distoleon tetragrammicus is a species of antlion in the subfamily Myrmeleontinae. Distoleon tetragrammicus is widespread in the western Palearctic realm and it is present in most of Southern Europe and in North Africa. This species can be found in a wide range of habitats, from coastal dunes to mountain forests, mainly in arid and sandy areas, in oak and pine forests and in various calcareous wasteland with minimum moisture. The larvae avoid exposed sites as coastal dunes.
The adults of Distoleon tetragrammicus greatly resemble dragonflies or damselflies. They have a wingspan of about 75 millimetres (3.0 in). The front wing can reach a width of 26–40 millimetres (1.0–1.6 in). They have thick, prominent, apically clubbed antennae, a long, narrow abdomen and two pairs of long, transparent, multiveined wings, with some brown and opaque spots. This species is sometimes confused with Myrmeleon formicarius.
The larvae do not look anything like adults. The length of a fully grown larva is typically 12–22 millimetres (0.47–0.87 in). The basic body color is dark brown with darker markings. The head is dark brown. The strong dark brown mandibles... Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Cévennes National Park | 🇫🇷 France | |
| 2 | Sierra Nevada National Park | 🇪🇸 Spain | |
| 3 | Pyrénées National Park | 🇫🇷 France | |
| 4 | Sierra de Guadarrama National Park | 🇪🇸 Spain |
Rare
Under 5% of wildlife watchers report a Four-Spotted Antlion sighting in Porto on a given day, based on 11 verified sightings from GBIF citizen-science data. It is the 320th most-seen of the 498 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.
July and August
In those months about 10% of wildlife watchers report a Four-Spotted Antlion in Porto on a given day, against under 5% in September to June, the lowest months. Those are among Porto's driest months, with about 20 mm of rain a month against 140 mm in January.
Between 10 pm and 1 am
Across all the parks we cover, that three-hour window holds the most Four-Spotted Antlion sightings with a recorded time, and about 6 in 10 of them come between 6 pm and 6 am: it is seen both by day and at night.
8th of 10
Of the 10 cities where we can rate Four-Spotted Antlion sightings, Porto ranks 8th at under 5%. The best odds are in Budapest (Hungary, about 10%), Lyon (France, about 10%) and Athens (Greece, about 10%).
GBIF citizen-science records
It is estimated from how often the Four-Spotted Antlion is recorded against all the insects logged in Porto (11 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.
