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Greta oto
Greta oto is a species of brush-footed butterfly and member of the subfamily Danainae, tribe Ithomiini, and subtribe Godyridina. It is known by the common name glasswing butterfly for its transparent wings, which allow it to camouflage without extensive coloration. In Spanish-speaking regions, it may also be referred to as espejitos, meaning "little mirrors" because of its transparent wings. The butterfly is mainly found in Central America and northern regions of South America, with sightings as far north as Texas and as far south as Chile. While its wings appear delicate, the butterfly is able to carry up to 40 times its own weight. In addition to its wing physiology, the butterfly is known for behaviors such as long migrations and lekking. Greta oto closely resembles Greta andromica.
The glasswing butterfly is most commonly found from Central to South America as far south as Chile, with appearances as north as Mexico and Texas. This butterfly thrives in the tropical conditions of the rainforests in the Central and South American countries.
Eggs are typically laid on plants of the genus Cestrum, a member of the nightshade family, which serves as a food source for their later life stages.
The caterpillars of the glasswing butterfly have green bodies, with yellow stripes in later stages. They are found on the host plants of the genus Cestrum. The larvae are cylindrical in shape with dorsal projections that are smooth with filaments. These properties make the larvae extremely reflective, which essentially causes them to be invisible to predators.
The pupae are initially green with black specks, later becoming silver in colour. During the fifth instar stage, the pupa produces a silk pad on the lower surface of leaves through four spinning movements, onto which it attaches. The silk fibers are important in providing greater flexibility to the pupal attachment. The cremaster, a hooked bristle-like structure on the pupa, attaches to this silk pad by a series of lateral movements of the pupa's posterior abdomen. Pupal attachment failure occurs when the silk pad breaks. Additionally, the pupal attachment has high tensile strength and toughness, which prevent the pupa from being pulled by predators or breaking off in the wind, allowing it to swing safely.
The adult glasswing butterfly can be identified by its transparent wings with opaque, dark-brown borders tinted with red or orange. Its body is a dark brown color. The butterfly is 2.8 to 3.0 cm (1.1 to 1.2 in) long and has a wingspan of 5.6 to 6.1 cm (2.2 to 2.4 in).
Poisonous plants of the genus Cestrum provide the best source of nutrition for the caterpillar; when larvae use other host plants, they often die in the first instar stage or develop more slowly. The caterpillars feed on these toxic plants and are perhaps toxic to predators through secondary chemicals stored in their tissues. For example, the caterpillar's chemical extracts are unpalatable to Paraponera clavata ants.
The adult butterfly feeds mainly on the nectar of the flowers of the genus Lantana, which includes 150 species of perennial flowering plants. They also eat flowers in the Asteraceae and Boraginaceae families and the droppings of insectivorous birds, absorbing amino acids that are later converted to proteins. Adult butterflies are also toxic due to the males consuming Asteraceae flowers whose nectar contains pyrrolizidine alkaloids.
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Greta oto
Greta oto is a species of brush-footed butterfly and member of the subfamily Danainae, tribe Ithomiini, and subtribe Godyridina. It is known by the common name glasswing butterfly for its transparent wings, which allow it to camouflage without extensive coloration. In Spanish-speaking regions, it may also be referred to as espejitos, meaning "little mirrors" because of its transparent wings. The butterfly is mainly found in Central America and northern regions of South America, with sightings as far north as Texas and as far south as Chile. While its wings appear delicate, the butterfly is able to carry up to 40 times its own weight. In addition to its wing physiology, the butterfly is known for behaviors such as long migrations and lekking. Greta oto closely resembles Greta andromica.
The glasswing butterfly is most commonly found from Central to South America as far south as Chile, with appearances as north as Mexico and Texas. This butterfly thrives in the tropical conditions of the rainforests in the Central and South American countries.
Eggs are typically laid on plants of the genus Cestrum, a member of the nightshade family, which serves as a food source for their later life stages.
The caterpillars of the glasswing butterfly have green bodies, with yellow stripes in later stages. They are found on the host plants of the genus Cestrum. The larvae are cylindrical in shape with dorsal projections that are smooth with filaments. These properties make the larvae extremely reflective, which essentially causes them to be invisible to predators.
The pupae are initially green with black specks, later becoming silver in colour. During the fifth instar stage, the pupa produces a silk pad on the lower surface of leaves through four spinning movements, onto which it attaches. The silk fibers are important in providing greater flexibility to the pupal attachment. The cremaster, a hooked bristle-like structure on the pupa, attaches to this silk pad by a series of lateral movements of the pupa's posterior abdomen. Pupal attachment failure occurs when the silk pad breaks. Additionally, the pupal attachment has high tensile strength and toughness, which prevent the pupa from being pulled by predators or breaking off in the wind, allowing it to swing safely.
The adult glasswing butterfly can be identified by its transparent wings with opaque, dark-brown borders tinted with red or orange. Its body is a dark brown color. The butterfly is 2.8 to 3.0 cm (1.1 to 1.2 in) long and has a wingspan of 5.6 to 6.1 cm (2.2 to 2.4 in).
Poisonous plants of the genus Cestrum provide the best source of nutrition for the caterpillar; when larvae use other host plants, they often die in the first instar stage or develop more slowly. The caterpillars feed on these toxic plants and are perhaps toxic to predators through secondary chemicals stored in their tissues. For example, the caterpillar's chemical extracts are unpalatable to Paraponera clavata ants.
The adult butterfly feeds mainly on the nectar of the flowers of the genus Lantana, which includes 150 species of perennial flowering plants. They also eat flowers in the Asteraceae and Boraginaceae families and the droppings of insectivorous birds, absorbing amino acids that are later converted to proteins. Adult butterflies are also toxic due to the males consuming Asteraceae flowers whose nectar contains pyrrolizidine alkaloids.