Giovanni Battista Grassi (1854-1925) was an Italian zoologist, known for work demonstrating that mosquitos carry the malaria plasmodium in their digestive tract, on the embryological development of honey bees, on parasites, particularly the vine parasite phylloxera, migrations and metamorphosis in eels, and on termites.

He won the Royal Society's Darwin Medal in 1896.

A stamp commemorating Grassi and with his portrait was issued by the Italian post office in 1955 ^*.

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• Biography of Grassi

Italian zoologists | 1854 births | 1925 deaths | Malaria

Giovanni Battista Grassi