Oryzaephilus surinamensis
In 3 days ~20% in a week ~40%
Oryzaephilus surinamensis, the sawtoothed grain beetle, is a beetle in the superfamily Cucujoidea. It is a common, worldwide pest of grain and grain products as well as chocolate, drugs, and tobacco. The species' binomial name, meaning "rice-lover from Suriname," was coined by Carl Linnaeus, who received specimens of the beetle from Surinam. It is also known as the malt beetle and may be referenced in the poem This Is The House That Jack Built in the line "....the rat that ate the malt that lay in the house that Jack built" the malt referenced may not be actual malted grain but a sawtoothed grain beetle.
O. surinamensis is a slender, dark brown beetle 2.4–3 mm in size, with characteristic "teeth" running down the side of the prothorax. It is nearly identical to Oryzaephilus mercator, or the Merchant Grain Beetle, however, O. surinamensis has smaller eyes and a broader, more triangular head; O. surinamensis unlike O. mercator are unable to fly.
O. surinamensis can be found worldwide. The beetle is one of the most commonly encountered stored product pests and is widespread within the food industry and can be found in food manufacturing... Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|
More parks will be added in future updates.
| # | City | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Zhuhai [Macau] | 🇨🇳 China | |
| 2 | Kyiv | 🇺🇦 Ukraine | |
| 3 | Prague | 🇨🇿 Czechia | |
| 4 | Moscow | 🇷🇺 Russia |
With luck
About 10% of wildlife watchers report a Sawtoothed Grain Beetle sighting in Zhuhai [Macau] on a given day, based on 5 verified sightings from GBIF citizen-science data. It is the 119th most-seen of the 152 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.
July–August and November
In those months about 20% of wildlife watchers report a Sawtoothed Grain Beetle in Zhuhai [Macau] on a given day, against under 5% in April–June, September–October and December–February, the lowest months.
Yes
Of the 4 cities where we can rate Sawtoothed Grain Beetle sightings, Zhuhai [Macau] has the highest daily chance: about 10%. Next come Kyiv (Ukraine, under 5%) and Prague (Czechia, under 5%).
Same order: Coleoptera
The closest relatives of the Sawtoothed Grain Beetle that you can see in Zhuhai [Macau] (order Coleoptera, Beetles) are Anomala rubripes (about 20%), Six-Spotted Zigzag Ladybird (about 20%) and Tobacco Beetle (about 10%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the Sawtoothed Grain Beetle is recorded against all the insects logged in Zhuhai [Macau] (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.
