Asphondylia floccosa
In 3 days ~20% in a week ~40%
Asphondylia floccosa, the woolly stem gall midge, is a species of gall midges in the family Cecidomyiidae. The larvae induce galls on Atriplex polycarpa. They don't feed on the gall itself, but rather fungus that grows within the gall. Each gall can contain anywhere from one to fifteen chambers. This species is known from Arizona and California, and was first described by American entomologist Raymond Gagne in 1968. Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Death Valley National Park | 🇺🇸 United States | |
| 2 | Joshua Tree National Park | 🇺🇸 United States | |
| 3 | Saguaro National Park | 🇺🇸 United States |
| # | City | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Mesa | 🇺🇸 United States |
With luck
About 10% of wildlife watchers report a Saltbush Woolly Stem Gall Midge sighting in Mesa on a given day, based on 25 verified sightings from GBIF citizen-science data. It is the 83rd most-seen of the 232 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.
July and September–April
In those months about 10% of wildlife watchers report a Saltbush Woolly Stem Gall Midge in Mesa on a given day, against under 5% in May–June and August, the lowest months.
Between 4 and 7 pm
Across all the parks we cover, that three-hour window holds the most Saltbush Woolly Stem 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 Mesa, in our data
Mesa is the only city on Wallace's Line with enough records to rate Saltbush Woolly Stem Gall Midge sightings: about 10% of wildlife watchers there report one on a given day.
GBIF citizen-science records
It is estimated from how often the Saltbush Woolly Stem Gall Midge is recorded against all the insects logged in Mesa (25 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.
