Microcaecilia supernumeraria

Physical characteristics

Like other caecilians, M. supernumeraria has a cylindrical, limbless body with ring-like skin folds (annuli), a pointed head, small or covered eyes, and a pair of sensory tentacles located between the nostrils and the eyes. External appearance is generally smooth and adapted for burrowing.

• Body: elongated, limbless, with annular grooves.
• Senses: reduced eyesight, tactile and chemical sensing via tentacles.
• Skin: smooth and muscular for moving through soil.

Habitat and distribution

Reports associate this species with lowland forest environments and human-modified rural areas. Typical habitats include moist, subtropical or tropical lowland forests and adjacent disturbed sites where soil moisture allows burrowing and foraging (habitats overview, tropical forests).

Behavior and life history

Details of the natural history of M. supernumeraria are sparse. Caecilians in general feed on soil invertebrates such as earthworms and insects; many are fossorial (burrowing) and spend much of their lives underground. Reproductive modes vary across caecilians — from aquatic larvae to direct-developing young — but the specific reproductive biology of this species requires further study.

Conservation and significance

Because it is seldom encountered, the conservation status of this species is not well understood. Like many forest-floor amphibians, it is potentially vulnerable to habitat loss, soil degradation, and changes in land use. Continued field surveys and taxonomic work (see family accounts: Caeciliidae overview) are important to clarify its range, population trends, and ecological needs.

Notes and research needs

Microcaecilia supernumeraria is representative of a group that illustrates how much remains unknown about subterranean amphibians. Improved records, standardized surveys, and ecological studies would help determine its role in soil ecosystems and inform conservation priorities. For general background on caecilian biology and identification, consult summaries on caecilians and regional species lists such as the species entry and family pages (Caeciliidae, family overview).