Thelidomus aspera is a species of air-breathing land snail, a terrestrial pulmonate gastropod mollusc in the family Pleurodontidae.

It is endemic to Jamaica.

[1] This species has not yet become established in the US, but it is considered to represent a potentially serious threat as a pest, an invasive species which could negatively affect agriculture, natural ecosystems, human health or commerce.

Therefore, it has been suggested that this species be given top national quarantine significance in the USA.

[2] Thelidomus aspera is a host for larvae of the parasites Angiostrongylus cantonensis[3] and Aelurostrongylus abstrusus.