Suastus gremius
In 3 days ~70% in a week ~90%
Suastus gremius, the Indian palm bob or palm bob, is a species of butterfly in the family Hesperiidae. It is found in the Indomalayan realm. Male. Upperside olive-brown. Forewing with ochreous-white spots, a small one in the middle of the discocellulars, sometimes a minute one above it, three sub-apical small spots, the upper one usually minute, three discal larger spots in an oblique line, the upper one before the middle of the first median interspace, the second (somewhat oval) before the middle of the first median interspace, the third (a long oval) a little beyond the middle of the interno-median interspace; these discal spots varying much in size. Hindwing paler than the forewing, with a broad dark costal margin, lint without any markings. Cilia of both wings brownish-ochreous. Underside grey tinged with pinkish. Forewing with the inner portion below the subcostal vein suffused with black, leaving the apex broadly pinkish-grey, the spots as on the upperside. Hindwing clear pinkish-grey without any suffusion, but sparsely covered with whitish scales, a black spot near the upper end of the cell, and three in an oblique row in the median and interno-median interspaces... Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Sundarbans National Park | 🇮🇳 India | |
| 2 | Taroko National Park | 🇹🇼 Taiwan |
Possible
About 30% of wildlife watchers report an Indian Palm Bob sighting in Sundarbans National Park on a given day, based on 6 verified sightings from GBIF citizen-science data from 2019 to 2026. It is the 8th most-seen of the 15 insects we can rate there. Over three days the chance rises to about 70%, and over a week to about 90%, if each day is a fresh chance.
April
In that month about 70% of wildlife watchers report an Indian Palm Bob in Sundarbans National Park on a given day, against about 10% in January–March, May, July–August and October–November, the lowest months. That is one of Sundarbans National Park's driest months, with about 55 mm of rain against 480 mm in July. June has too few records to rate.
Between noon and 3 pm
Across all the parks we cover, that three-hour window holds the most Indian Palm Bob sightings with a recorded time, and about 9 in 10 of them come between 6 am and 6 pm: it is a daytime animal.
Yes
Of the 2 parks where we can rate Indian Palm Bob sightings, Sundarbans National Park has the highest daily chance: about 30%. Next come Taroko National Park (Taiwan, about 10%).
Same order: Lepidoptera
The closest relatives of the Indian Palm Bob that you can see in Sundarbans National Park (order Lepidoptera, Butterflies and Moths) are Leopard Lacewing Butterfly (about 50%), Blue Tiger (about 40%) and Sandalwood Defoliator (about 40%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the Indian Palm Bob is recorded against all the insects logged in Sundarbans National Park (6 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.
