Having had a further look at Isochorista species photos on iNat and NatureMapr I am no longer sure I can tell the difference between Isochorista chaodes and Isochorista ranulana.
Based on the second image I would suggest I. ranulana because i would say it looks more like the majority of those identified as I ranulana on iNaturalist, but I agree they are diffucult to distinguish. Looking at Donald Hobern's Bold website its difficult to see the difference between set specimenens of the two species,
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