Finally, seven new species have been described in the genus since Wilson's (1982a) treatment, 

 as listed below: 



Tantilla impetTsa CsLmphell, 1998 



Tantilla johnsoni Wilson et al., 1999 



Tantilla miyatai Wilson and Knight, in Wilson, 1987a 



Tantilla slavensi Perez-Higareda et al., 1985 



Tantilla tayrae Wilson, 1983 



Tantilla tecta Campbell and Smith, 1997 



Tantilla vulcani CzmphtW, 1998 



In summary, of the forty-six species listed by Wilson (1982a), forty-two are currently regarded 

 as valid members of the genus Tantilla, three taxa were resurrected subsequently, one 

 subspecific taxon was elevated to specific level, and seven new taxa were described later, 

 constituting the fifty-three species in the genus. 



Although our understanding of the evolutionary history to Tantilla is still in its infancy, some 

 efforts have been made to place species in species groups. Those assignments follow: 



Tantilla calamarina group (Wilson and Meyer, 1981, Wilson et al., 1999) 

 T calmarina T. deppei 



T. cascadae T. veriformis 



T coronadoi 



Tantilla coronata group (Telford, 1966) 



T. coronata T. relicta 



T. oolitica 



Tantilla melanocephala group (Wilson and Mena, 1980; Wilson, 1987a) 

 T andinista T. lempira 



T capistrata T. melanocephala 



T. equatoriana T miyatai 



T. insulamontana 



Tantilla planiceps group (Cole and Hardy, 1981) 

 T. atriceps T. planiceps 



T. hobartsmithi T. yaquia 



