Kallima horsfieldii
In 3 days ~50% in a week ~80%
Kallima horsfieldii, the blue oakleaf, southern blue oakleaf or Sahyadri blue oakleaf, is a nymphalid butterfly found in India. The underside appears like a leaf complete with midrib while the upperside is brilliantly coloured.
Males and females indigo blue. Forewing; with a broad, oblique, slightly curved, sinuous-edged, pale blue band, turning to white on the anterior half; the distance measured on the costa of the outer edge of thin band greater than half the length of the wing from the base; its inner margin bordered by short, obliquely-placed, detached linear black markings; apical area beyond the band jet black, with a preapical whites spot; medial hyaline (glass-like) spots, the lower varying in size, in interspaces 2 and 3. Hindwing uniform, the costa and apex broadly and the abdominal fold brown; vein 1 with long soft greyish-brown hairs along its length, extending also over the abdominal fold. Forewings and hindwings as in Kallima inachus, with a dark brown subterminal zigzag line, commencing below vein 3 on the forewing.
Underside as in Kallima inachus simulating a dry leaf, but the resemblance on the whole is perhaps less perfect... Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Sinharaja Forest Reserve | 🇱🇰 Sri Lanka |
More parks will be added in future updates.
Possible
About 20% of wildlife watchers report a Sahyadri Blue Oakleaf sighting in Sinharaja Forest Reserve on a given day, based on 14 verified sightings from GBIF citizen-science data from 2019 to 2026. It is the 29th most-seen of the 117 insects we can rate there. Over three days the chance rises to about 50%, and over a week to about 80%, if each day is a fresh chance.
March, May and August–October
In those months about 30% of wildlife watchers report a Sahyadri Blue Oakleaf in Sinharaja Forest Reserve on a given day, against under 5% in June–July and December, the lowest months.
Between 10 am and 1 pm
Across all the parks we cover, that three-hour window holds the most Sahyadri Blue Oakleaf sightings with a recorded time, and about 8 in 10 of them come between 6 am and 6 pm: it is a daytime animal.
Only Sinharaja Forest Reserve, in our data
Sinharaja Forest Reserve is the only park on Wallace's Line with enough records to rate Sahyadri Blue Oakleaf sightings: about 20% of wildlife watchers there report one on a given day.
GBIF citizen-science records
It is estimated from how often the Sahyadri Blue Oakleaf is recorded against all the insects logged in Sinharaja Forest Reserve (14 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.
