Gryllotalpa orientalis
In 3 days ~10% in a week ~20%
Gryllotalpa orientalis is a species of mole cricket in the family Gryllotalpidae, commonly known as the oriental mole cricket. It is found in much of Asia and Australasia. At one time, this species was misidentified as G. africana and thought to have a widespread distribution in both Africa and Asia, but in the 1980s, G. orientalis was recognised as a separate species. It is a polyphagous pest, damaging crops by gnawing their roots.
This mole cricket is plump, yellowish-brown, and paler beneath, and about 20 mm long. It has short filiform antennae, fore legs designed for digging, and a large, oblong pronotum. The wings project slightly from beneath the fore wings. After mating underground, the female builds a nesting chamber deep in the soil and lays about 200 oval eggs that hatch after 10 days. The nymphs remain in their nest for the first 2-3 weeks, guarded by the female. A newly hatched nymph has a blueish-white prothorax and legs. Later instars are grayish-black with white markings, and the last nymphal stage is similar to the adult and exhibits short wing pads. The whole lifecycle lasts for 1-3 years depending on the climatic conditions. The adults... Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|
More parks will be added in future updates.
Rare
Under 5% of wildlife watchers report an Oriental Mole Cricket sighting in Tokyo on a given day, based on 34 verified sightings from GBIF citizen-science data. It is the 328th most-seen of the 1013 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.
June
In that month about 10% of wildlife watchers report an Oriental Mole Cricket in Tokyo on a given day, against under 5% in July to May, the lowest months.
12th of 14
Of the 14 cities where we can rate Oriental Mole Cricket sightings, Tokyo ranks 12th at under 5%. The best odds are in Daejeon (South Korea, about 20%), Sapporo (Japan, about 10%) and Nagoya (Japan, about 10%).
Same order: Orthoptera
The closest relatives of the Oriental Mole Cricket that you can see in Tokyo (order Orthoptera, Grasshoppers, Crickets, and Katydids) are Atractomorpha lata (about 20%), Oriental Longheaded Locust (about 20%) and Patanga japonica (about 10%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the Oriental Mole Cricket is recorded against all the insects logged in Tokyo (34 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.
