Figure 4. - Nest defending postures of Xylocopanasalis; Defending posture tactics performed by females Xylocopanasalis to repel other conspecifics in the aggregated nesting site. The bee blocking the entrance via protruding her head out from the nest entrance (4a). Guarding the entrance by using the dorsal side of her metasoma to block the invaders (4b).

Figure 4. - Nest defending postures of Xylocopanasalis; Defending posture tactics performed by females Xylocopanasalis to repel other conspecifics in the aggregated nesting site. The bee blocking the entrance via protruding her head out from the nest entrance (4a). Guarding the entrance by using the dorsal side of her metasoma to block the invaders (4b).