i didn’t know that mixed case names were allowed in iNaturalist. Phycus (capitalized) is a very early user. so maybe his id was created before mixed casing was disallowed, but then his id was never fixed to conform with the new rules, allowing this conflict. i assume iNat staff will have to resolve this conflict somehow, or else phycus (lowercase) will need to change his id, since Phycus (capitalized) appears to be inactive.