Tenebrio molitor
In 3 days ~20% in a week ~40%
Mealworms are the larval form of the yellow mealworm beetle, Tenebrio molitor, a species of darkling beetle. The yellow mealworm beetle prefers a warmer climate and higher humidity. Male mealworm beetles release a sex pheromone to attract females to mate.
Tenebrio molitor has been used in biomedical research. Mealworms can be a dietary source for animals and humans. They are also considered pests, especially to food storage. Like all holometabolic insects, T. molitor goes through four life stages: egg, larva, pupa, and adult. Larvae typically measure about 2.5 centimetres (0.98 in) or more. Adults are generally 1.25 to 1.8 centimetres (0.49 to 0.71 in) in length.
T. molitor is dark brown or black as an adult, with larvae up to 1.25 inches (3.2 cm) long and adults up to 0.75 inches (1.9 cm) long. The yellow mealworm beetle can be differentiated from other beetles, due to the linear grooves that are evenly divided and run along the abdomen. The beetle has only four tarsal segments on its hind legs. Most ground beetles, which are similar in size to Tenebrio molitor, have five tarsal segments.
Commonly mistaken with the black mealworm beetle (T. obscurus), key variations... Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|
More parks will be added in future updates.
| # | City | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Helsinki | 🇫🇮 Finland | |
| 2 | Kyiv | 🇺🇦 Ukraine | |
| 3 | Kazan | 🇷🇺 Russia | |
| 4 | Edmonton | 🇨🇦 Canada | |
| 5 | Yekaterinburg | 🇷🇺 Russia | |
| 6 | Saint Petersburg | 🇷🇺 Russia | |
| 7 | Moscow | 🇷🇺 Russia | |
| 8 | Minneapolis [Saint Paul] | 🇺🇸 United States |
With luck
About 10% of wildlife watchers report a Yellow Mealworm Beetle sighting in Helsinki on a given day, based on 27 verified sightings from GBIF citizen-science data. It is the 202nd most-seen of the 838 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.
February and June–September
In those months about 10% of wildlife watchers report a Yellow Mealworm Beetle in Helsinki on a given day, against under 5% in March–May and October–January, the lowest months.
Yes
Of the 8 cities where we can rate Yellow Mealworm Beetle sightings, Helsinki has the highest daily chance: about 10%. Next come Kyiv (Ukraine, about 10%) and Kazan (Russia, under 5%).
GBIF citizen-science records
It is estimated from how often the Yellow Mealworm Beetle is recorded against all the insects logged in Helsinki (27 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.
