Species boundaries to the limit: Integrating species delimitation methods is critical to avoid taxonomic inflation in the case of the Hajar banded ground gecko (Trachydactylus hajarensis)

•Hidden introgression is detected through a large geographical cline spanning through approximately 150 km.•Sample choice, small population sizes, and linking population sizes in SNAPP can influence species tree reconstructions.•Species delimitation methods yield contrasting results within Trachydactylus hajarensis.•Dataset down sampling and species delimitation methods need to be cautiously implemented and validated to avoid contributing to taxonomic inflation.