Siphonopidae

The Siphonopidae are a family of caecilians, which are limbless, wormlike amphibians belonging to the order Gymnophiona. These amphibians are primarily found in humid tropical regions worldwide, with five families in the Americas and three each in Africa and mainland Asia.1

Caecilians are adapted for a subterranean existence, possessing compact, bony heads ideal for tunneling. Their eyes are degenerate and covered by skin or bone, as vision is not crucial in their environment. Instead, they rely on well-developed nasal organs and a unique chemosensory tentacle located between the eye and nostril for enhanced perception.2

The Siphonopidae family, specifically, is characterized by an imperforate stapes and the absence of inner mandibular teeth. They are oviparous, meaning they lay eggs, and are found in South America. This family comprises 7 genera and 19 species.1