1508 species that have occurred in India, Bangladesh, Pakistan, Nepal, Bhutan, Maldives, the Chagos archipelago and Afghanistan are covered, including 85 hypothetical and 67 'possible' species, which are given only short accounts.
Verket omfattar 1508 arter som har observerats i Indien, Bangladesh, Pakistan, Nepal, Bhutan, Maldiverna, Chagosöarna och Afghanistan, inklusive 85 hypotetiska och 67 "möjliga" arter, vilka enbart beskrivs kortfattat.