Japananus hyalinus
In 3 days ~10% in a week ~20%
Japananus hyalinus, the Japanese maple leafhopper, is a species of leafhopper of the subfamily Deltocephalinae and tribe Opsiini (formerly placed in tribe Scaphytopiini). Believed to be native to eastern Asia, it has been carried with the trade in cultivated maples and is now widely found in Europe, North America and Australia.
Female 5.5 mm long (even 6.5 mm), male 4.25 mm. Head comes to an acute point, head and prothorax greenish yellow. Forewings translucent with reddish veins (paler in male). In the resting position three narrow beaded bands of purplish brown run more or less straight across the wings, incorporating some portions of the veins.
The eggs are inserted into the nodes of young branches, making them very difficult to detect in dormant planting stock. There is normally one generation per year (two in Italy), with the eggs over wintering. The nymphs are sharply pointed at both head and tail and are frequently yellowish.
The species was first described (as Platymetopius hyalinus) by Herbert Osborn in 1900, from specimens taken in Washington, D.C. Since it was unlikely that a native species would have remained undetected so long... Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|
More parks will be added in future updates.
Rare
Under 5% of wildlife watchers report a Japanese Maple Leafhopper sighting in Tokyo on a given day, based on 9 verified sightings from GBIF citizen-science data. It is the 770th 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.
Any time of year
In every month with enough records, under 5% of wildlife watchers report a Japanese Maple Leafhopper in Tokyo on a given day, so our monthly data shows no clear season.
23rd of 24
Of the 24 cities where we can rate Japanese Maple Leafhopper sightings, Tokyo ranks 23rd at under 5%. The best odds are in Berlin (Germany, about 10%), Auckland (New Zealand, about 10%) and Bucharest (Romania, about 10%).
GBIF citizen-science records
It is estimated from how often the Japanese Maple Leafhopper is recorded against all the insects logged in Tokyo (9 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.
