Astylus atromaculatus
In 3 days ~70% in a week ~90%
Astylus atromaculatus is a species of beetle in the family Melyridae. It is variously known as the spotted maize beetle, or pollen beetle. It is indigenous to Argentina and neighbouring countries, but has been accidentally imported into the warmer regions of South Africa, where it has become invasive.
Adult Astylus atromaculatus are roughly oval in shape, slightly elongated, with parallel sides. They generally are slightly flat in shape, and like most Melyridae, tend to be soft and leathery in texture. They attain about 12 mm in bodily length by 5 mm wide. They are finely bristly with finely punctured elytra and upper surfaces. The body colour is generally black, but with pale hairs on the pronotum surrounding two large, eye-like dorsal black patches. However, the most conspicuous feature is the colour scheme of the elytra; they are yellow to orange with a black median stripe along their margins where the folded elytra meet. Two blotches on that median stripe form cross-marks, one about 2 mm from the anterior end of the line, and one about 1 mm from the posterior end. Each elytron has three much larger black blotches on its dorsolateral surface near its lateral margin... Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Golden Gate Highlands National Park | 🇿🇦 South Africa | |
| 2 | Addo Elephant National Park | 🇿🇦 South Africa |
| # | City | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Rosario | 🇦🇷 Argentina | |
| 2 | Cordoba | 🇦🇷 Argentina | |
| 3 | Mendoza | 🇦🇷 Argentina | |
| 4 | Buenos Aires | 🇦🇷 Argentina | |
| 5 | Pretoria | 🇿🇦 South Africa | |
| 6 | Johannesburg | 🇿🇦 South Africa |
Possible
About 30% of wildlife watchers report a Spotted Maize Beetle sighting in Rosario on a given day, based on 36 verified sightings from GBIF citizen-science data. It is the 7th most-seen of the 82 insects we can rate there. Over three days the chance rises to about 70%, and over a week to about 90%, if each day is a fresh chance.
February and April
In those months about 50% of wildlife watchers report a Spotted Maize Beetle in Rosario on a given day, against under 5% in July to December, the lowest months.
Between 11 am and 2 pm
Across all the parks we cover, that three-hour window holds the most Spotted Maize Beetle sightings with a recorded time, and about 9 in 10 of them come between 6 am and 6 pm: it is a daytime animal.
Yes
Of the 6 cities where we can rate Spotted Maize Beetle sightings, Rosario has the highest daily chance: about 30%. Next come Cordoba (Argentina, about 20%) and Mendoza (Argentina, about 20%).
Same order: Coleoptera
The closest relatives of the Spotted Maize Beetle that you can see in Rosario (order Coleoptera, Beetles) are Asian Lady Beetle (about 30%), Coraliomela quadrimaculata (about 20%) and Spotless Lady Beetle (about 20%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the Spotted Maize Beetle is recorded against all the insects logged in Rosario (36 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.
