Species	Intestinal loop	Anterior melanophore	ventral Posterior melanophore	ventral
N. mucronatus	Sharp	Absent	Present	
N. torrei	Sharp	Present	Present	
N. anaelisae	Flat	Present	Present	
N. species	Sharp	Absent	Absent	
N. vermiformis	Sharp	Present	Present	
N. tuberculatus	Sharp	Absent	Present