|Yellow Monday Cicada Cyclochila australasiae, Nowra, New South Wales.|
This is the yellow form of a species which can also be green - when it is called the Greengrocer - when a blue pigment is also present.
|Ladybird, probably Harmonia sp., Brindabella Mountains near Canberra.|
|Leopard Longicorn Beetle Penthea pardalis, Cooktown, tropical Queensland.|
Possibly a similar story to the ladybird, but I doubt that the details of its colouring have been studied.
|European Wasp Vespula germanica (on chicken), Canberra.|
This has become an environmental and social scourge since being introduced to Australia.
|Spider-hunting wasp, Isla de Chiloe, Chile.|
|Flower Spider, family Thomisidae, probably Diaea sp.|
National Botanic Gardens, Canberra. I have no idea of the origin of its yellow, though its purpose is clear.
|Butterflies, San Pedro area, southern Peru.|
|Moth, Limbe, western Cameroon.|
|Large Grass Yellow Eurema hecabe (Pieridae), 40 Mile Scrub Nature Reserve, north Queensland.|
|Papilionid, Manu National Park, Peruvian Amazonia;|
showing off its papiliochromes.