Coridius ianus
In 3 days ~20% in a week ~50%
Coridius ianus, sometimes known as the red pumpkin bug, is a species of bug in the family Dinidoridae. It feeds by sucking on the sap on soft parts of plants, especially in the cucurbit family, and causes damage to crops.
This species was originally described in the genus Cimex by Fabricius, who later transferred the genus to Edessa in 1803. It was later placed in the genus Pentatoma by Lepeletier and Serville in 1825 and then the genus Aspongopusby Laporte in 1833. The species was finally transferred to Coridius by Schumacher in 1924.
Subsequent authors, beginning with Fuessly in 1778, subsequently spelled the epithet as "janus." Such subsequent spellings that differ from the original publication, however, are unavailable names under ICZN Article 33.3. Thus, ianus is retained as the accepted spelling.
The antenna is five segmented with the third segment longer than the first which is shorter than all other segments, the body outline is oval. The scutellum is short and has a rounded apex. The proboscis tip extends past the coxae of the first pair of legs. They are yellowish to orange red in colour with a black stripe on the anterior... 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 Coridius ianus sighting in Kolkata on a given day, based on 14 verified sightings from GBIF citizen-science data. It is the 108th most-seen of the 213 insects we can rate there. Over three days the chance rises to about 20%, and over a week to about 50%, if each day is a fresh chance.
June and July
In those months about 20% of wildlife watchers report a Coridius ianus in Kolkata on a given day, against under 5% in March, August–September and November–January, the lowest months. Those are among Kolkata's wettest months, with about 280 mm of rain a month against 10 mm in December.
Among the best
Of the 3 cities where we can rate Coridius ianus sightings, Kolkata ranks 2nd at about 10%, level with the leaders once rounded. The best odds are in Thrissur (India, about 10%).
Same order: Hemiptera
The closest relatives of the Coridius ianus that you can see in Kolkata (order Hemiptera, True Bugs, Hoppers, Aphids, and allies) are Darth Maul Bug (about 20%), Oncopeltus nigriceps (about 10%) and Aquarius adelaidis (about 10%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the Coridius ianus is recorded against all the insects logged in Kolkata (14 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.
