1984] 
Holldobler & Engel-Siegel — Metapleural gland 209 
Fig. 4. a. SEM micrograph of the mesosoma of a worker of Oecophylla longi- 
noda. b. Close-up of the posterolateral corners of the alitrunk. Arrows indicate the 
area where the opening of a metapleural gland should be located. 
