Armillae manus membranosae, commonly known as "webbed armillae of the hand," is a phrase used in biology to describe the anatomical structure found in certain species of animals, specifically referring to the presence of skin flaps or membranes connecting the fingers or toes. This feature is predominantly observed in avian species, such as birds or bats, and occasionally in aquatic creatures like frogs or otters.
The term "armillae" refers to the thin, elongated structure, often resembling a thread or web, created by the interconnection of the skin between adjacent fingers or toes. These membranes are typically flexible, allowing for a wide range of movement, such as stretching or contraction, and contribute to the overall agility and maneuverability of the appendages.
The term "manus" refers to the hand or forelimb, indicating that this characteristic is focused on the extremities of animals. "Membranosae" comes from the Latin word "membrana," meaning membrane or thin layer, emphasizing the thin, delicate nature of the armillae.
The armillae manus membranosae have evolved in various species to serve different functions. In birds, these membranes enable enhanced flight capabilities, as they aid in holding and manipulating air currents, supporting efficient soaring, gliding, or maneuvering during flight. In aquatic organisms, the webbed armillae help facilitate swimming or diving, improving movement and propelling force in water.
Overall, armillae manus membranosae denote the remarkable adaptation and specialization of animals to their environments, enabling them to thrive and exhibit unique locomotor abilities.
