Tumor Stem Gall Midge

Tumor Stem Gall Midge

Asphondylia atriplicis

Daily sighting probability <5% · Rare
at San Diego

In 3 days ~10% in a week ~20%

18 Verified sightings at San Diego
10 In 1 park From 2019 to 2026
August Best month
☀️ Diurnal When it's spotted

Global Distribution

Parks Where Found

# Park Country Daily sighting probability
1 Joshua Tree National Park 🇺🇸 United States
~10%

More parks will be added in future updates.

Cities Where Found

# City Country Daily sighting probability
1 San Diego 🇺🇸 United States
<5%
2 Los Angeles 🇺🇸 United States
<5%

Before you go

What are the chances of seeing a Tumor Stem Gall Midge in San Diego?

Rare

Under 5% of wildlife watchers report a Tumor Stem Gall Midge sighting in San Diego on a given day, based on 18 verified sightings from GBIF citizen-science data. It is the 345th most-seen of the 693 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.

When is the best time to see a Tumor Stem Gall Midge in San Diego?

Any time of year

In every month with enough records, under 5% of wildlife watchers report a Tumor Stem Gall Midge in San Diego on a given day, so our monthly data shows no clear season.

What time of day is best to see a Tumor Stem Gall Midge?

Between 9 am and noon

Across all the parks we cover, that three-hour window holds the most Tumor Stem Gall Midge sightings with a recorded time, and nearly all of them come between 6 am and 6 pm: it is a daytime animal.

Is San Diego the best place to see a Tumor Stem Gall Midge?

Yes

Of the 2 cities where we can rate Tumor Stem Gall Midge sightings, San Diego has the highest daily chance: under 5%. Next come Los Angeles (United States, under 5%).

Where does the Tumor Stem Gall Midge sighting chance come from?

GBIF citizen-science records

It is estimated from how often the Tumor Stem Gall Midge is recorded against all the insects logged in San Diego (18 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.

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