Georges Rousseau-Decelle (2 January 1878, in Roche-sur-Yon – 1965) was a French entomologist.
Rousseau-Decelle amassed a large collection of worldwide butterflies containing many rare species, notably in the genera Morpho and Ornithoptera.
Georges Rousseau-Decelle was a chevalier de la Légion d’Honneur and a member of the Société entomologique de France.
Partial list Note the extreme "splitting" (dividing a taxon into multiple taxa) on the basis of minute morphological differences)
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