Laxta granicollis
In 3 days ~10% in a week ~20%
Laxta granicollis, the bark cockroach, is a species of Blaberidae that occurs in Australia. The female of this species lacks wings while the male is winged. Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Grampians National Park | 🇦🇺 Australia | |
| 2 | Great Otway National Park | 🇦🇺 Australia | |
| 3 | Royal National Park | 🇦🇺 Australia | |
| 4 | Blue Mountains National Park | 🇦🇺 Australia |
Rare
Under 5% of wildlife watchers report a Bark Cockroach sighting in Blue Mountains National Park on a given day, based on 5 verified sightings from GBIF citizen-science data from 2019 to 2026. It is the 681st most-seen of the 789 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.
June–July and September–October
In those months about 10% of wildlife watchers report a Bark Cockroach in Blue Mountains National Park on a given day, against under 5% in August and November–May, the lowest months.
Between noon and 3 pm
Across all the parks we cover, that three-hour window holds the most Bark Cockroach sightings with a recorded time, and about 7 in 10 of them come between 6 am and 6 pm: it is seen both by day and at night.
4th of 4
Of the 4 parks where we can rate Bark Cockroach sightings, Blue Mountains National Park ranks 4th at under 5%. The best odds are in Grampians National Park (Australia, about 10%), Great Otway National Park (Australia, about 10%) and Royal National Park (Australia, about 10%).
GBIF citizen-science records
It is estimated from how often the Bark Cockroach is recorded against all the insects logged in Blue Mountains National Park (5 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.
