Hellula hydralis
In 3 days ~10% in a week ~20%
Hellula hydralis, the cabbage centre grub, is a moth of the family Crambidae. It was described by Achille Guenée in 1854 and is found throughout Australia. The wingspan is about 20 mm. The larvae feed on Brassica oleracea and Brassica napus. Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Hattah-Kulkyne National Park | 🇦🇺 Australia | |
| 2 | Great Otway National Park | 🇦🇺 Australia | |
| 3 | Blue Mountains National Park | 🇦🇺 Australia |
Rare
Under 5% of wildlife watchers report a Cabbage Centre Grub sighting in Brisbane on a given day, based on 6 verified sightings from GBIF citizen-science data. It is the 981st most-seen of the 1083 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.
Any time of year
In every month with enough records, under 5% of wildlife watchers report a Cabbage Centre Grub in Brisbane on a given day, so our monthly data shows no clear season.
Between 8 and 11 pm
Across all the parks we cover, that three-hour window holds the most Cabbage Centre Grub sightings with a recorded time, and about 6 in 10 of them come between 6 pm and 6 am: it is seen both by day and at night.
3rd of 3
Of the 3 cities where we can rate Cabbage Centre Grub sightings, Brisbane ranks 3rd at under 5%. The best odds are in Perth (Australia, about 10%) and Melbourne (Australia, about 10%).
GBIF citizen-science records
It is estimated from how often the Cabbage Centre Grub is recorded against all the insects logged in Brisbane (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.
