Fungal?

This is something new, not sure if anyone can help. A couple of my plants are developing this. Ive noticed the little purple spots ages ago, but you never know what mottleing hoya leaves are going to have. However, it now seems to open up and has a parchment like semi transparent centre...quite dry. Ive treated it with all purpose fungicide..wondered if I should be looking for a specifical fungal component. I really dont think its sunburn, as they dont get any full sun.......but...I may be wrong. If it wasnt for the purple surround, I might have thought otherwise

and the other plant

Dom...I have been told that when we grow our plants outdoors they are bitten on, poked and chewed by all sorts of insects...and then the spot where they are poked becomes necrotic. Not to worry. Sometimes a fungus will develope and I think a broad spectrum fungicide is called for periodically. I have a regime of spraying with wettable copper on intervals in the Greenhouse. Outside, nothing seems to develope. Fungi often thrive where there is little or no air movement!

Carol

Thanks Carol......I dont normally worry too much about the condition of the leaves..as you say, what with the elements and the insects, they can get a little battle scarred. Just wanted to check it was nothing that might rampage thru the collection. I often look at cuttings I get from indoor growers and the leaves are perfect and so shiny....hmm, me thinks, not gonna look so perfect when I get it growing..:))
We have a red beetle here that, when you see it, it runs behind the plant, then when you go round and look again, it runs round the other side immediately..same when its on the ground....you step one way...goes the other, go back, and it retreats......little critter gives me the creeps ( probably incase it turns out to be more intelligent than myself....Ha .)

Dom