Caterpillar of Tetrio Sphinx Moth / Pseudosphinx t…
Tetrio Sphinx Moth caterpillar / Pseudosphinx tetr…
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On our way to Little Tobago island, Day 3
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Little Tobago trip, Day 3
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Gilpin Trace trail, Tobago, Day 2
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Tetrio Sphinx Moth caterpillar / Pseudosphinx tetrio, Tobago


"Pseudosphinx tetrio is a species of moth in the family Sphingidae. Its common names include tetrio sphinx, giant gray sphinx, frangipani hornworm, and plumeria caterpillar. It is native to the tropical and subtropical Americas from the southern and southwestern United States to Brazil. The occasional individual has been recorded as far north as the northeastern United States.
The larva is a caterpillar which may exceed 15 centimeters in length. It is black with aposematic yellow bands and a red-orange head. Toward the posterior end is an orange bump with a black horn roughly 2 centimeters long. The legs are orange with black spots. The pupa is about 7 centimeters long. It is yellow when new, turning brown and darkening to a reddish brown as it hardens.
The moth specializes on plants of the dogbane family, Apocynaceae. Host taxa include Plumeria species such as red frangipani (P. rubra) and white frangipani (P. alba), and golden trumpet (Allamanda cathartica). P. alba in particular is so often infested with this caterpillar that it has been nicknamed "the wormy tree".
The caterpillar has several antipredator adaptations. Its consumption of toxic plants makes it distasteful to most predators. An exception is the Smooth-billed Ani (Crotophaga ani), which tears the caterpillar apart to eat it, avoiding the gut containing the plant material. The caterpillar is also coated in barbed urticating hairs, which stick deeply in skin and cause irritation. If caught, the caterpillar bites." From Wikipedia.
en.wikipedia.org/wiki/Pseudosphinx_tetrio
The larva is a caterpillar which may exceed 15 centimeters in length. It is black with aposematic yellow bands and a red-orange head. Toward the posterior end is an orange bump with a black horn roughly 2 centimeters long. The legs are orange with black spots. The pupa is about 7 centimeters long. It is yellow when new, turning brown and darkening to a reddish brown as it hardens.
The moth specializes on plants of the dogbane family, Apocynaceae. Host taxa include Plumeria species such as red frangipani (P. rubra) and white frangipani (P. alba), and golden trumpet (Allamanda cathartica). P. alba in particular is so often infested with this caterpillar that it has been nicknamed "the wormy tree".
The caterpillar has several antipredator adaptations. Its consumption of toxic plants makes it distasteful to most predators. An exception is the Smooth-billed Ani (Crotophaga ani), which tears the caterpillar apart to eat it, avoiding the gut containing the plant material. The caterpillar is also coated in barbed urticating hairs, which stick deeply in skin and cause irritation. If caught, the caterpillar bites." From Wikipedia.
en.wikipedia.org/wiki/Pseudosphinx_tetrio
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