A new species of Systropha from Thailand (Hymenoptera: Halictidae: Rophitinae)

Systropha sirikitae de Silva & Packer, new species, from Thailand is described and illustrated.  It is known only from the male.  Patiny & Michez’s (2006) key to males of Systropha is modified to permit its identification.  It would seem to be the second known species of the subgenus Systrophidia Cockerell