Top butterfly : Delias nigrina, the black Jezebel or common Jezebel (also used for Delias eucharis), is a butterfly in the family Pieridae. It is found along the eastern seaboard of Australia, from Queensland, through New South Wales to Victoria.   

The wingspan of both the male and the female is 56 mm  

Lower butterfly : The striped tiger of the subfamily Danainae, which includes the Monarchs & Tigers. They are large butterflies, characterised by having orange wings with black veins, a white subapical band, and a double row of white spots around the margins of the hindwings.  

All butterflies in this subfamily are thought to be toxic or distasteful to avian predators, their bodies containing toxins derived from the larval foodplants, and often supplemented by further toxins derived from adult food sources.   

The bright colour and pattern of Danaus butterflies ‘advertises’ their distasteful qualities to potential predators in much the same way that the bands of yellow and black of wasps advertise the fact that they can sting. Consequently any bird that suffers the unpleasant experience of tasting a Danaus is unlikely to attack any similarly coloured butterfly. Effectively, a few individuals are sacrificed for the good of the species as a whole.    

Measurements :
Diameter: 14 cm
Height: 21 cm