Calloselasma rhodostoma

Calloselasma rhodostoma (Calloselasma rhodostoma) is a snake recorded for Vietnam in the project inventory. Its supporting occurrence note is “Expert range list”. The accepted scientific name is retained because regional snake taxonomy and species boundaries can change, while similar-looking species may require scale counts, anatomy or genetic evidence for reliable separation. This profile therefore distinguishes the recorded identity and occurrence from broader biological context instead of inventing unsupported locality, size, diet or breeding details (project species data; Reptile Database taxonomy).

Calloselasma is a terrestrial pit-viper lineage of tropical Southeast Asia. Its members rely on camouflage and a sit-and-wait hunting strategy, detecting warm-bodied prey with facial heat-sensing pits and striking from ground cover. They possess medically significant venom and should never be approached or handled. This is general genus-level context rather than a Vietnam-specific field account, so exact prey, habitat, size and reproductive figures are deliberately omitted where the inventory evidence alone cannot support them (general Calloselasma account; Reptile Database).