Sun moths in the genus Epicroesa (Lepidoptera, Heliodinidae) associated with Ceodes umbellifera, with description of a new species from Taiwan.

The association of two heliodinid moths with Ceodes umbellifera is documented for the first time: Epicroesa thiasarcha Meyrick, 1907 from Australia and E. bellatula sp. nov. from Taiwan. The two share similar wing patterns and genitalia, but they can be separated by diagnostic features of adults and immatures. The p-distance of COI barcodes was over 9% between samples of the two taxa, lending support to their recognition as distinct species. The considerable geographical separation between these morphologically similar yet genetically diverged species suggests that either both may have broader distributions than currently recognized, or additional undescribed species may occur in the large gap between Australia and Taiwan.