Many taxonomic complexes still remain biological enigma.in some cases electron microscopy has been helpful to some extent,while chemotaxonmy proved to be of little help.At this juncture came the  molecular taxonomy which ignited much hope in classical taxonomists but due to extremely high cost of equipments involved in it,it is out of reach to a large group of classical taxonomists.Further, it seems that no significant contribution could be achieved so far,with the use of this technique.

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