Rabdophaga rosaria
In 3 days ~20% in a week ~30%
Rabdophaga rosaria is a gall midge which forms Camellia galls or terminal rosette gall on willow species. It was first described by Hermann Loew in 1850. Willows are extremely susceptible to gall induction and growth manipulation and Salix is one of the plant genera with the highest known numbers of associated galler species.
Rabdophaga rosaria is probably a group of closely related, unnamed species, possibly each restricted to one species of willow. Galls should be recorded as R rosaria and the host plant should also be recorded. The gall consists of from thirty to sixty leaves, shortened and crowded together in rosettes on white willow (S. alba), crack willow (S. fragilis), goat willow (S. caprea) and purple willow (S. purpurea) willows as well as the eared sallow (S. aurita) and grey sallow (S. cinerea). The oviposition of this species results in a chemical interaction that halts the lengthwise growth of infected willow shoots, the leaves however continue to develop and thus the characteristic "rose" forms at the tip of the affected shoot.
Rabdophaga rosaria is found on willow branches and the gall diameter depends upon the species, being... Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Bavarian Forest National Park | 🇩🇪 Germany |
More parks will be added in future updates.
| # | City | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Kharkiv | 🇺🇦 Ukraine | |
| 2 | Yekaterinburg | 🇷🇺 Russia | |
| 3 | Kazan | 🇷🇺 Russia | |
| 4 | Kyiv | 🇺🇦 Ukraine | |
| 5 | Moscow | 🇷🇺 Russia |
With luck
About 10% of wildlife watchers report a Willow Rose Gall Midge sighting in Bavarian Forest National Park on a given day, based on 10 verified sightings from GBIF citizen-science data from 2019 to 2026. It is the 585th most-seen of the 1115 insects we can rate there. Over three days the chance rises to about 20%, and over a week to about 30%, if each day is a fresh chance.
March–April and July–September
In those months about 10% of wildlife watchers report a Willow Rose Gall Midge in Bavarian Forest National Park on a given day, against under 5% in May–June and October–February, the lowest months.
Between 2 and 5 pm
Across all the parks we cover, that three-hour window holds the most Willow Rose Gall Midge sightings with a recorded time, and about 9 in 10 of them come between 6 am and 6 pm: it is a daytime animal.
Only Bavarian Forest National Park, in our data
Bavarian Forest National Park is the only park on Wallace's Line with enough records to rate Willow Rose Gall Midge sightings: about 10% of wildlife watchers there report one on a given day.
Same family: Cecidomyiidae
The closest relatives of the Willow Rose Gall Midge that you can see in Bavarian Forest National Park (family Cecidomyiidae, Gall and Forest Midges) are Beech Gall Midge (about 10%) and Hairy Beech Gall (about 10%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the Willow Rose Gall Midge is recorded against all the insects logged in Bavarian Forest National Park (10 verified sightings from 2019 to 2026), 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.
