External morphology of a recently described scorpion species, Calchas birulai Fet et al., 2009 (Iuridae), was investigated in detail using Scanning Electron Microscopy (SEM). The samples were collected from Halfeti District, Şanlıurfa Province, Turkey. We investigate and depict, in particular, the cuticle, chelicerae, genital operculum, sternum, stigmata, wax pores, and sensory organs (trichobothria, setae, pectines, slit sensilla, constellation array).