Valanga nigricornis
In 3 days ~70% 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 |
Possible
About 30% of wildlife watchers report a Javanese Grasshopper sighting in Johor Bahru on a given day, based on 21 verified sightings from GBIF citizen-science data. It is the 5th most-seen of the 53 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.
June and November
In those months about 60% of wildlife watchers report a Javanese Grasshopper in Johor Bahru on a given day, against under 5% in July and October, 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.
3rd of 12
Of the 12 cities where we can rate Javanese Grasshopper sightings, Johor Bahru ranks 3rd at about 30%. The best odds are in Yogyakarta (Indonesia, about 40%) and Tasikmalaya (Indonesia, about 40%).
GBIF citizen-science records
It is estimated from how often the Javanese Grasshopper is recorded against all the insects logged in Johor Bahru (21 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.
