Nacaduba kurava
In 3 days ~20% in a week ~40%
Nacaduba kurava, the transparent six-line blue, is a species of butterfly in the family Lycaenidae found in Asia and Australia. The species was first described by Frederic Moore in 1857. Male upperside: pale dull violet with in certain lights a frosted silvery sheen; bases of wings suffused slightly with blue. Forewing: a slender anteciliary dark brown line. Hindwing: costa broadly paler; dorsum brownish; in most specimens the subterminal spots in interspaces 1 and 2 show through by transparency from the underside, in a few these spots are marked by actual scaling; an anteciliary dark brown line as in the forewing. Underside: brown. Forewing: transversely traversed by three pairs of white strigae, the innermost pair slightly curved, from subcostal vein to vein 1 across the middle of the cell; the inner striga of the medial pair complete, crosses on the inner side of the discocellulars from subcostal vein to vein 1, the outer striga beyond the discocellulars from vein 7 to vein 1, interrupted in interspace 5; the outer pair of strigae are discal and cross -from vein 7 to vein 3, the inner striga of the pair impinging at vein 3 on the outer striga of the medial pair... Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Lamington National Park | 🇦🇺 Australia | |
| 2 | Taroko National Park | 🇹🇼 Taiwan |
With luck
About 10% of wildlife watchers report a Transparent 6-Line Blue sighting in Taichung on a given day, based on 5 verified sightings from GBIF citizen-science data. It is the 172nd most-seen of the 197 insects we can rate there. Over three days the chance rises to about 20%, and over a week to about 40%, if each day is a fresh chance.
June to September
In those months about 10% of wildlife watchers report a Transparent 6-Line Blue in Taichung on a given day, against under 5% in October to May, the lowest months. Those are among Taichung's wettest months, with about 260 mm of rain a month against 40 mm in December.
Between 8 and 11 am
Across all the parks we cover, that three-hour window holds the most Transparent 6-Line Blue sightings with a recorded time, and about 9 in 10 of them come between 6 am and 6 pm: it is a daytime animal.
6th of 8
Of the 8 cities where we can rate Transparent 6-Line Blue sightings, Taichung ranks 6th at about 10%. The best odds are in Tuen Mun (China, about 20%), Hong Kong (China, about 10%) and Brisbane (Australia, about 10%).
Same family: Lycaenidae
The closest relatives of the Transparent 6-Line Blue that you can see in Taichung (family Lycaenidae, Gossamer-winged Butterflies) are Pale Grass Blue (about 40%), Zebra Blue (about 20%) and Lesser Grass Blue (about 10%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the Transparent 6-Line Blue is recorded against all the insects logged in Taichung (5 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.
