Good evening

[Bluebottle]

Saw this Melanitis leda leda (Common Evening Brown) on the corridor after coming back from badminton just now. Not sure how it landed itself on the 16th floor! Quickly went home take out the camera an took a few record shots.

[Bluebottle]

Did some goggle and found this interesting article "Light attracted butterflies: a review from the Indian sub-region with an inventory from West Bengal, India
Soumyajit Chowdhury & Rahi Soren ".

It is interesting to note that different butterflies are attracted to different type of artificial lights and there is a table details just that.

A snippet of the conclusion of the artcile
"Crepuscular species, like Melanitis leda, are more active in the dark than the sun-loving, diurnal species, and thus are attracted more frequently to artificial lights (Donahue 1962). The phenomenon of light attraction among butterflies has been found to be inclined more in the monsoon season (June–October) in the Indian sub-region. Heavy downpours during the monsoon months may disrupt the night-time shelters of some butterfly individuals, inducing them to move from their former preferred site to a new one. In the absence of optimum light, they fail to do so using visual cues. In that case, a source of artificial light with an intensity enough to stimulate them to get attracted may serve the purpose of utilizing their visual potency to search for a safe shelter."

Read the full article here (http://threatenedtaxa.org/ZooPrintJournal/2011/June/o247626vi111868-1871.pdf)