Stegobium paniceum
In 3 days ~20% in a week ~30%
The drugstore beetle (Stegobium paniceum), also known as the bread beetle, biscuit beetle, and misnamed as the biscuit weevil (despite not being a weevil), is a small brown beetle that infests a wide variety of dried plant products, where it is among the most common non-weevils. It is the only living member of the genus Stegobium. It belongs to the family Ptinidae, which also includes the deathwatch beetle, furniture beetle and cigarette beetle. A notable characteristic of this species is the symbiotic relationship the beetles have with a yeast-like fungus which is transmitted from female to larvae through the oviduct.
The drugstore beetle is distributed worldwide with higher prevalence in warmer climates. It is commonly confused with the cigarette beetle, as they have a similar size and coloring. Adults possess antennae ending in 3-segmented clubs, while cigarette beetles have serrated (saw-like) antennae. Their bodies are lined with grooves running longitudinally along the elytra, whereas the cigarette beetle is smooth.
Adult drugstore beetles are between 2.5 and 3.5 millimetres (3⁄32 and 1⁄8 in) long and have a reddish-brown colour with a cylindrical body. Larvae... Wikipedia →
| # | Park | Country | Daily sighting probability |
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More parks will be added in future updates.
With luck
About 10% of wildlife watchers report a Drugstore Beetle sighting in Belgrade on a given day, based on 5 verified sightings from GBIF citizen-science data. It is the 107th most-seen of the 127 insects we can rate there. Over three days the chance rises to about 20%, and over a week to about 30%, if each day is a fresh chance.
March–April and August–September
In those months about 10% of wildlife watchers report a Drugstore Beetle in Belgrade on a given day, against under 5% in May–July and October–February, the lowest months.
Among the best
Of the 9 cities where we can rate Drugstore Beetle sightings, Belgrade ranks 2nd at about 10%, level with the leaders once rounded. The best odds are in Tel Aviv (Israel, about 10%).
Same order: Coleoptera
The closest relatives of the Drugstore Beetle that you can see in Belgrade (order Coleoptera, Beetles) are Asian Lady Beetle (about 20%), Seven-Spotted Lady Beetle (about 20%) and Holochelus aequinoctialis (about 20%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the Drugstore Beetle is recorded against all the insects logged in Belgrade (5 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.
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