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Indian Palm Bob

Suastus gremius subgrisea


The sexes are alike but have some variations. It is dark brown on the upper side with scattered golden brown scales near the forewing base. The Hyaline white spots on the forewing are usually large but they can be small or very rarely even absent. It has a yellowish patch near the lower margin of the forewing. The hindwing has no markings. The dark brown background colour of its underside is not visible due to the grey-brown scales. The hyaline spots on its forewing remain even on the underside, and the yellow spot represented as a diffused white patch. It is easily distinguished from other similar looking Hesperiids by the black spots on its hindwing. The number and prominence of these spots vary significantly.


In my backyard, feeding on lantana camara flower.


It has a fast flight that is typical to Hesperiids and is fond of the sun and readily comes to flowers in scrubs. It can even feed on flowers with long corolla tubes since its proboscis is long. It lowers its head towards the flower until it touches the petals when the length of its proboscis is not adequate. When it is disturbed, it vanishes quickly. This butterfly is common in all types of vegetation except dense forests. It is quite abundant where coconut and other palms grow.

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Nugegoda, Western Province, Sri Lanka

Spotted on Jul 28, 2021
Submitted on Sep 26, 2021

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