Six New Dracula Ants From Madagascar - “Mystrium was a difficult group to identify because of the remarkable variation within each species.” Yoshimura said. - http://www.redorbit.com/news...
Mystrium species have unique features such as long, spatulate mandibles that snap together (Gronenberg et al. 1998); wingless queens that in some undetermined species are even smaller than workers (Molet et al. 2007); and large, wingless individuals intermediate between workers and queens, which behave like queens (Molet et al. 2012). - Halil
“Our team has explored Madagascar and its surrounding islands for 20 years and collected thousands of specimens to solve the mysteries of Mystrium,” said Fisher, an expert on Malagasy ants. - Halil