Ctenoplusia limbirena
In 3 days ~10% in a week ~20%
Ctenoplusia limbirena, the Scar Bank gem, or silver U-tail, is a moth of the family Noctuidae. It is found in south-western Europe, Africa (Lesotho, the Cape Province, KwaZulu-Natal, Transvaal, Mozambique, Zimbabwe, Zambia, Botswana, Malawi and eastern and equatorial Africa), the Canary Islands, Arabia, the southern Himalayas, India, Sri Lanka, Indochina to south-eastern China, Taiwan, Sulawesi, Bali and Timor. In New Zealand, it has been established since 2011.
The wingspan is 40–45 mm. Palpi with short third joint. Hind femur of male not tufted with long hair. Head and thorax clothed with grey and black scales. Abdomen pale with dark dorsal tufts. Forewings fuscous with a copper tinged. There are ill-defined darker medial and submarginal patches can be seen. The minutely waved double sub-basal and antemedial lines with silvery specks on them. Orbicular and reniform small, indistinct and with pink edges. There is a prominent silvery "Y-mark" can be seen below the cell. The minutely waved double postmedial line angled inwards above vein 1. There are traces of an irregularly sinuous sub-marginal line and a small pinkish patch found on center of outer margin. A marginal... Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Blue Mountains National Park | 🇦🇺 Australia | |
| 2 | Kruger National Park | 🇿🇦 South Africa |
Rare
Under 5% of wildlife watchers report a Scar Bank Gem 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.
February, April and October
In those months about 10% of wildlife watchers report a Scar Bank Gem in Blue Mountains National Park on a given day, against under 5% in March, May–September and November–January, the lowest months.
Between 7 and 10 pm
Across all the parks we cover, that three-hour window holds the most Scar Bank Gem sightings with a recorded time, and about 7 in 10 of them come between 6 pm and 6 am: it is most active around dawn and dusk.
Yes
Of the 2 parks where we can rate Scar Bank Gem sightings, Blue Mountains National Park has the highest daily chance: under 5%. Next come Kruger National Park (South Africa, under 5%).
Same family: Noctuidae
The closest relatives of the Scar Bank Gem that you can see in Blue Mountains National Park (family Noctuidae, Cutworm Moths and Allies) are Brown Cutworm (about 20%), Green-Blotched Moth (about 20%) and Bogong Moth (about 10%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the Scar Bank Gem 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.
