Crocothemis servilia
Crocothemis servilia is a large red dragonfly. It is normally spotted at open exposed habitat. This species likes sun and frequently perches under sun. The female individual of C. servilia has dull yellow colour. The male and female of C. servilia are depicted on the stamps.
Orthetrum testaceum
Orthetrum testaceum is quite similar to Crocothemis servilia from many aspects - the colour and the size. From far it is quite difficult to tell which is which. The main characters distingiushing these two species are the eyes and wing venation. The two eyes of O. testaceum are touching each other, but they are barely touching each other in C. servilia. O. testaceum has complete distal antenodal (forewing) whereas C. servilia has incomplet distal antenodal. O. testaceum is commonly seen perching under shade with sun spots.