On taxon pages like this one:
https://www.inaturalist.org/taxa/61903-Xysticus
There are several strings that are not localized in the mouse-over legend for the charts “Life stage” and “Sex”:
The unlocalized strings are: Male, Female, Cannot Be Determined, Egg, Juvenile, Adult and possibly other life stages.
It should be easy to localize them because the strings are already present at crowdin (for the corresponding annotations) but they are not used here:
https://crowdin.com/translate/inaturalistweb/all/en-bg?filter=basic&value=0#q=controlled_term_labels