Valanga nigricornis
In 3 days ~80% in a week >90%
Valanga nigricornis, the Javanese grasshopper (also known as the Javanese bird grasshopper), is a species of grasshopper in the subfamily Cyrtacanthacridinae of the family Acrididae. It is found in southeastern Asia, the type location being Singapore. It was first described by the German zoologist Hermann Burmeister in 1838. There are more than twenty subspecies, most of which are endemic to different island groups; the subspecies V. nigricornis nigricornis is the type for the genus Valanga.
There is considerable sexual dimorphism in this species with the males measuring 45 to 55 millimetres (1+3⁄4 to 2+1⁄8 in) in length and the females 15 to 75 mm (5⁄8 to 3 in). The adults are yellowish-brown, yellowish or green with bluish-black markings. The hind wings, which are visible in flight, are rose red. The nymphs are pale green with dark markings.
The Javanese grasshopper is native to Brunei, Cambodia, Indonesia, Malaysia, Papua New Guinea, the Philippines, Singapore, the Solomon Islands, Thailand, and Vietnam. It is mainly a woodland species and is found in forest clearings, on trees and shrubs. It can be a serious pest in oil palm and rubber plantations... Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Raja Ampat | 🇮🇩 Indonesia | |
| 2 | Kinabalu Park | 🇲🇾 Malaysia |
| # | City | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Yogyakarta | 🇮🇩 Indonesia | |
| 2 | Tasikmalaya | 🇮🇩 Indonesia | |
| 3 | Johor Bahru | 🇲🇾 Malaysia | |
| 4 | Kuala Lumpur | 🇲🇾 Malaysia | |
| 5 | Jakarta | 🇮🇩 Indonesia | |
| 6 | Singapore | 🇸🇬 Singapore | |
| 7 | Semarang | 🇮🇩 Indonesia | |
| 8 | Surakarta | 🇮🇩 Indonesia | |
| 9 | Denpasar | 🇮🇩 Indonesia | |
| 10 | Kuching | 🇲🇾 Malaysia |
Likely
About 40% of wildlife watchers report a Javanese Grasshopper sighting in Yogyakarta on a given day, based on 51 verified sightings from GBIF citizen-science data. It is the 7th most-seen of the 141 insects we can rate there. Over three days the chance rises to about 80%, and over a week to over 90%, if each day is a fresh chance.
February and September–November
In those months about 50% of wildlife watchers report a Javanese Grasshopper in Yogyakarta on a given day, against about 20% in August and December, the lowest months.
Between 10 am and 1 pm
Across all the parks we cover, that three-hour window holds the most Javanese Grasshopper 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 12 cities where we can rate Javanese Grasshopper sightings, Yogyakarta has the highest daily chance: about 40%. Next come Tasikmalaya (Indonesia, about 40%) and Johor Bahru (Malaysia, about 30%).
Same family: Acrididae
The closest relatives of the Javanese Grasshopper that you can see in Yogyakarta (family Acrididae, Short-horned Grasshoppers) are Stenocatantops cornelii (about 30%), Caryanda spuria (about 20%) and Carinate Locust (about 10%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the Javanese Grasshopper is recorded against all the insects logged in Yogyakarta (51 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.
