Leptocybe invasa
In 3 days ~20% in a week ~40%
Leptocybe invasa, the blue gum chalcid wasp or eucalyptus gall wasp, is a chalcid wasp which is the only species in the monotypic genus Leptocybe in the subfamily Tetrastichinae, of the family Eulophidae. It is a gall wasp which causes the formation of galls on a number of species of Eucalyptus, it was described in 2004 after galls were found in river red gums (Eucalyptus camaldulensis) in the Mediterranean and Middle East and has since been found to be a widespread species where its host trees are planted. It is indigenous to Australia.
This tiny wasp is just over one millimeter in length. Its body is brown with a slight blue to green iridescence. Parts of the legs are yellowish in color. Leptocybe invasa is native to Queensland, Australia where its exact distribution has yet to be determined. It has now been found as an invasive species in eucalypts in northern, eastern and southern Africa, Asia, the Pacific Region, Europe as far north as the United Kingdom, southern Asia, southern South America, the Middle East, Mexico and the United States. It appears to be spreading.
L. invasa was discovered in 2000 when river red gums in the... Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Table Mountain National Park | 🇿🇦 South Africa |
More parks will be added in future updates.
| # | City | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Athens | 🇬🇷 Greece | |
| 2 | Sacramento | 🇺🇸 United States | |
| 3 | Los Angeles | 🇺🇸 United States | |
| 4 | San Francisco | 🇺🇸 United States |
With luck
About 10% of wildlife watchers report a Eucalyptus Stem Gall Wasp sighting in Athens on a given day, based on 6 verified sightings from GBIF citizen-science data. It is the 162nd most-seen of the 242 insects we can rate there. Over three days the chance rises to about 20%, and over a week to about 40%, if each day is a fresh chance.
January
In that month about 20% of wildlife watchers report a Eucalyptus Stem Gall Wasp in Athens on a given day, against under 5% in March, June and August–December, the lowest months. That is one of Athens's wettest months, with about 65 mm of rain against 10 mm in August.
Between 10 am and 1 pm
Across all the parks we cover, that three-hour window holds the most Eucalyptus Stem Gall Wasp sightings with a recorded time, and nearly all of them come between 6 am and 6 pm: it is a daytime animal.
Yes
Of the 4 cities where we can rate Eucalyptus Stem Gall Wasp sightings, Athens has the highest daily chance: about 10%. Next come Sacramento (United States, under 5%) and Los Angeles (United States, under 5%).
GBIF citizen-science records
It is estimated from how often the Eucalyptus Stem Gall Wasp is recorded against all the insects logged in Athens (6 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.
