Leaf is Abutilon theophrasti, 2nd pic is underside backlit.
74* F sunny. Affecting multiple leaves of small Asclepias (Common milkweed). Edge habitat.
Leaf is Symphyotrichum sp., probably S. urophyllum, 2nd pic is backlit. Plant observation: https://www.inaturalist.org/observations/183534852
Host plant -> https://www.inaturalist.org/observations/179910836
Leaf is Ambrosia trifida, 2nd pic is underside backlit.
Some kind of leaf miner? I believe the host tree is a valley oak.
Lantana
on Passiflora tenuiloba
on Chaetopappa bellidifolia
on Liriodendron tulipifera
on Quercus--I am not sure at all about this ID