I am not sure what is going on here. Are the beetles being attacked by a fungus? Are those beetle-shaped white mounds really beetles encased by the fungus? Are the larvae instars of the beetles or are the beetles there to harvest sugars? (A good image of the cheek-by-jowel spider had previously been uploaded.)
Con your third picture is I think of the Acacia Mealybug. I think the adult lady beetle species is eating the Mealybug but not sure what species it is. The nymph is also a mealy bug eater and looks to be Cryotolaemus montrouzieri - but may be the nymph of the Adult Ladybird in the picture that I can't ID.