Longleaf Wattle Gall Wasp

Longleaf Wattle Gall Wasp

Trichilogaster acaciaelongifoliae

Daily sighting probability ~30% · Possible
at Grampians National Park

In 3 days ~60% in a week ~90%

46 Verified sightings at Grampians National Park From 2019 to 2026
280 In all 6 parks
October Best month
☀️ Diurnal When it's spotted

About the Longleaf Wattle Gall Wasp

Trichilogaster acaciaelongifoliae is an Australian bud-galling wasp from the family Melanosomellidae that parasitises, among others, Acacia longifolia (long-leaved wattle, or Sydney golden wattle), which has become an invasive pest in several countries. T. acaciaelongifoliae has been introduced into South Africa in 1985 and into Portugal in 2015 as a successful biological control agent of A. longifolia. Wikipedia →

Global Distribution

Parks Where Found

# Park Country Daily sighting probability
1 Grampians National Park 🇦🇺 Australia
~30%
2 Freycinet National Park 🇦🇺 Australia
~20%
3 Table Mountain National Park 🇿🇦 South Africa
~10%
4 Garden Route National Park 🇿🇦 South Africa
~10%
5 Royal National Park 🇦🇺 Australia
~10%
6 Great Otway National Park 🇦🇺 Australia
~10%

Cities Where Found

# City Country Daily sighting probability
1 Hobart 🇦🇺 Australia
~10%
2 Porto 🇵🇹 Portugal
~10%
3 Melbourne 🇦🇺 Australia
<5%
4 Sydney 🇦🇺 Australia
<5%
5 Lisbon 🇵🇹 Portugal
<5%
6 Cape Town 🇿🇦 South Africa
<5%

Before you go

What are the chances of seeing a Longleaf Wattle Gall Wasp in Grampians National Park?

Possible

About 30% of wildlife watchers report a Longleaf Wattle Gall Wasp sighting in Grampians National Park on a given day, based on 46 verified sightings from GBIF citizen-science data from 2019 to 2026. It is the 14th most-seen of the 148 insects we can rate there. Over three days the chance rises to about 60%, and over a week to about 90%, if each day is a fresh chance.

When is the best time to see a Longleaf Wattle Gall Wasp in Grampians National Park?

September and October

In those months about 40% of wildlife watchers report a Longleaf Wattle Gall Wasp in Grampians National Park on a given day, against under 5% in March and May, the lowest months.

What time of day is best to see a Longleaf Wattle Gall Wasp?

Between 10 am and 1 pm

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

Is Grampians National Park the best place to see a Longleaf Wattle Gall Wasp?

Yes

Of the 6 parks where we can rate Longleaf Wattle Gall Wasp sightings, Grampians National Park has the highest daily chance: about 30%. Next come Freycinet National Park (Australia, about 20%) and Table Mountain National Park (South Africa, about 10%).

Where does the Longleaf Wattle Gall Wasp sighting chance come from?

GBIF citizen-science records

It is estimated from how often the Longleaf Wattle Gall Wasp is recorded against all the insects logged in Grampians National Park (46 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.

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