Lemon Emigrant (Catopsilia pomona pomona) is a rather common and interesting butterfly that can be found in our urban parks as its larval host plants Senna fistula and Senna alata are common wayside trees. Female Lemon Emigrant has quite a number of forms which look differently. I have seen this fast-flying medium size butterfly visiting the college compound regularly but it was always skittish. So this indeed was a timely and lucky shot. This is a solitary Scoliid wasp with a pair of long antennae and some yellow stripes on its abdomen. This is most likely to be a species of Campsomeris according to John. It tends to bend and curve its body when feeding, making it a challenge for us to take a good shot of it.