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The violet blanket octopus, Tremoctopus violaceus, is a pelagic cephalopod that lives in tropical and subtropical open oceans. It displays extreme sexual dimorphism: adult females can approach two metres in total length, whereas males remain only a few centimetres long. Females have expansive membra...
Eresus kollari is a velvet spider found across parts of Europe and Asia. The species shows pronounced sexual dimorphism: mature males have a vivid red abdomen marked with black spots, while females are larger and predominantly dark colored. It lives mainly in silk-lined burrows and feeds on insects,...
The clouded buff moth (*Diacrisia sannio*) is a European species of the Erebidae family, displaying notable sexual dimorphism where males feature bright yellow wings and females are more subdued.
The red-headed mouse spider (Missulena occatoria) is a species of mygalomorph spider native to mainland Australia. The species exhibits strong sexual dimorphism; males possess a distinctive bright red head and red chelicerae, while females are typically dark brown or black. They construct deep burro...
