Identificaciones de invertebratist

as you can probably tell the habitat is very sloped hence some of the blurry photos :) hopefully thats enough to id? i do have a few more and another expedition could be arranged. length ranged from 4ml to 6ml and was around 3ml across when conglobated interesting "ribbed" pattern? this population seems very isolated and habitat specific whatever it may be given i didn't locate any others further down the mountain let alone in the other habitat types.

Tentative ID.
Observed with and photographed by @invertebratist.
Collected live, now in a terrarium with other individuals (likely of the same species). If you have any questions or advice about their setup let me know.

as you can probably tell the habitat is very sloped hence some of the blurry photos :) hopefully thats enough to id? i do have a few more and another expedition could be arranged. length ranged from 4ml to 6ml and was around 3ml across when conglobated interesting "ribbed" pattern? this population seems very isolated and habitat specific whatever it may be given i didn't locate any others further down the mountain let alone in the other habitat types.