Myrmica fragilis Smith, 1858a: 124 (w.) SINGAPORE. Indomalaya.

Primary type information: Primary type material: lectotype worker (by designation of Heterick, 2006: 101). Primary type locality: lectotype Singapore: (no further data) (A.R. Wallace). Primary type depository: BMNH. Primary type specimen: CASENT0102330. Secondary type information: Secondary type material: 3 paralectotype workers. Secondary type locality: same as for lectotype. Secondary type depository: BMNH. Type notes: Syntypes of both Monomorium vastator and Monomorium fragilis bear the same label by A.R. Wallace, “House ants Singapore, very destructive”. Both probably had their origin in a single series, one part of which (Monomorium vastator) went direct to Smith, the other (Monomorium fragilis) which came to him later, via the W.W. Saunders collection.