Best Dimorphic
Updated Daily
The Promethea moth (*Callosamia promethea*) is a North American silkmoth belonging to the Saturniidae family. The species exhibits extreme sexual dimorphism, with dark, reddish-brown females and black males that strongly resemble the poisonous pipevine swallowtail butterfly to deter predators. Femal...
The Diana Fritillary is a butterfly species native to the eastern and central United States, belonging to the Nymphalidae family. It is strongly noted for its extreme sexual dimorphism, a trait where males and females display significantly different physical appearances. The females exhibit a striki...
The paradise shelduck, Tadorna variegata, is a large waterfowl species endemic to New Zealand. It displays pronounced sexual dimorphism: adult males have dark heads and bodies, while females have conspicuous white heads with chestnut bodies. The birds usually occur in pairs or family groups around g...
The Kelp Goose is a species of coastal waterfowl native to the rugged shorelines of Patagonia in southern Chile and Argentina. It exhibits strong sexual dimorphism, with males appearing predominantly white and females displaying dark brown plumage. The bird relies almost exclusively on green algae,...
The Dimorphic Jumping Spider (Maevia inclemens) is a small North American spider recognized for its unique sexual dimorphism. The species is notable for having two distinct male morphs—a dark, tufted form and a lighter, gray form—that exhibit different courtship dances and physical appearances. Both...
The Kentish glory, Endromis versicolora, is a large woodland moth in the family Endromidae and the only European representative of that family. Males are smaller, more strongly patterned, and fly rapidly by day while searching for the larger, paler females, which are mainly active after dark. In Bri...
Syrbula montezuma is Montezuma's grasshopper, a slant-faced acridid described by Saussure in 1861 and found from North America into Central America.
The muslin moth (Diaphora mendica) is a European erebid moth exhibiting strong sexual dimorphism: males are grey-spotted while females are white, both flying in spring across grasslands and woodland edges.
