Sternocera aequisignata
In 3 days ~10% in a week ~20%
Sternocera aequisignata is a species of jewel beetles belonging to the subfamily Julodinae. Its bright metallic green elytra are frequently used in jewellery making. Sternocera aequisignata can reach a length of about 30–50 millimetres (1.2–2.0 in). Elytra and pronotum have a beautiful metallic emerald iridescence that shows no to very weak reflectance in the near-infrared. The Pronotum is densely punctured.
This species occurs across southern Asia, including India, Myanmar, Thailand to southern Vietnam. The female lays eggs singly in soil at the base of the host plants. Each female is capable of laying 5–12 eggs, which take 2 months to hatch. The hatched larva has five instar stages. Stages 1 to 4 remain in the soil for 3–4 months where they feed upon the roots of the adult host plants. The 5th instar can be found above ground, until it returns underground again to pupate. Adult beetles have a short lifespan of 1–3 weeks, though the complete life cycle takes up to two years.
S. aequisignata and the similar S. ruficornis are both consumed by humans as a source of food in northern Thailand... Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|
More parks will be added in future updates.
| # | City | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Bangkok | 🇹🇭 Thailand |
Rare
Under 5% of wildlife watchers report a Sternocera aequisignata sighting in Bangkok on a given day, based on 7 verified sightings from GBIF citizen-science data. It is the 186th most-seen of the 245 insects we can rate there. Over three days the chance rises to about 10%, and over a week to about 20%, if each day is a fresh chance.
September
In that month about 10% of wildlife watchers report a Sternocera aequisignata in Bangkok on a given day, against under 5% in October to August, the lowest months. That is one of Bangkok's wettest months, with about 280 mm of rain against 10 mm in December.
Only Bangkok, in our data
Bangkok is the only city on Wallace's Line with enough records to rate Sternocera aequisignata sightings: under 5% of wildlife watchers there report one on a given day.
Same order: Coleoptera
The closest relatives of the Sternocera aequisignata that you can see in Bangkok (order Coleoptera, Beetles) are Coconut Rhinoceros Beetle (about 10%), Yellow-Spotted Flower Chafer (about 10%) 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 Sternocera aequisignata is recorded against all the insects logged in Bangkok (7 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.
