Sternochetus mangiferae
In 3 days ~10% in a week ~30%
Sternochetus mangiferae is a weevil commonly known as the mango seed weevil, mango stone weevil, or mango weevil. It is a compact weevil typical of the Cryptorhynchinae. It was first described in 1775 in the genus Curculio. The adults are 7.5-9.5 mm long and 4 mm in width.
Their colour varies and they may be covered with black, greyish, reddish, or yellowish scales. In Australia, adult weevils are dark brown to black with grey markings. When disturbed, an adult presses its legs to its body, and fits its beak into a ventral groove. Females have an elevated ridge at the pygidial apex, while it is rounded in the male. The adults are not strong fliers and are not found far from fallen fruit. New areas are infested by human transport of infested fruit. Eggs are elongated, creamy white, and covered by a protective brown coating with two tiny tails at one end. It is widespread and occurs in most countries, especially where mangoes are grown. The adult female lays eggs on the surface of the mango fruit. Larvae and pupae develop inside the fruit and adults emerge, cutting their way out of the seed and pericarp after the fruit falls and decays. Adults enter a diapause until the next fruiting season. The mango seed weevil is considered a pest on mangoes. Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|
More parks will be added in future updates.
| # | City | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Chennai | 🇮🇳 India |
With luck
About 10% of wildlife watchers report a Mango Seed Weevil sighting in Chennai on a given day, based on 8 verified sightings from GBIF citizen-science data. It is the 259th most-seen of the 376 insects we can rate there. Over three days the chance rises to about 10%, and over a week to about 30%, if each day is a fresh chance.
April to August
In those months about 10% of wildlife watchers report a Mango Seed Weevil in Chennai on a given day, against under 5% in September to March, the lowest months.
Between 8 and 11 pm
Across all the parks we cover, that three-hour window holds the most Mango Seed Weevil sightings with a recorded time, and about 6 in 10 of them come between 6 am and 6 pm: it is seen both by day and at night.
Only Chennai, in our data
Chennai is the only city on Wallace's Line with enough records to rate Mango Seed Weevil sightings: about 10% of wildlife watchers there report one on a given day.
Same order: Coleoptera
The closest relatives of the Mango Seed Weevil that you can see in Chennai (order Coleoptera, Beetles) are Small Transverse Ladybird Beetle (about 20%), Anegleis cardoni (about 20%) and Six-Spotted Zigzag Ladybird (about 10%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the Mango Seed Weevil is recorded against all the insects logged in Chennai (8 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.
