Ctenoplusia limbirena
In 3 days ~20% in a week ~30%
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 |
With luck
About 10% of wildlife watchers report a Scar Bank Gem sighting in Porto on a given day, based on 20 verified sightings from GBIF citizen-science data. It is the 223rd most-seen of the 498 insects we can rate there. Over three days the chance rises to about 20%, and over a week to about 30%, if each day is a fresh chance.
April, July–September and November–February
In those months about 10% of wildlife watchers report a Scar Bank Gem in Porto on a given day, against under 5% in March, May–June and October, 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.
2nd of 4
Of the 4 cities where we can rate Scar Bank Gem sightings, Porto ranks 2nd at about 10%. The best odds are in Auckland (New Zealand, about 20%).
GBIF citizen-science records
It is estimated from how often the Scar Bank Gem is recorded against all the insects logged in Porto (20 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.
