Tweet this page Like this page Email this page Share this page Home» Resources » Identification » Animals » Key to Ants of NZ » Key 3 Ant key 3 Tip of gaster with a circular or semicircular opening (acidopore) that is fringed with short hairs (Fig. a). 37 Tip of gaster slit-like without fringe of short hairs (Fig. b). 41 Fig. a: tip of gaster of Prolasius advena Fig. b: tip of gaster of Technomyrmex albipes