Explain Bioluminescence - Ethological Approach in Taxonomy

In those animals which exhibit bioluminescence. The pattern produced by the bioluminescence is used in taxonomy. It has been used, for example, in the identification of sibling species of the fire fly (Photuris).

The study of the frequency, intensity, colour and shape of individual flashes, flash sequences which may be of short or long duration, of constant intensity or may increase or decrease in intensity has made it possible to identify 18 sibling species of Phoiuris instead of just the 3 known before. Since the separation of the species on basis of bioluminescence, other differences have also come to light, in terms or differences in preferred habitat, in the breeding seasons and in body colour.