Description: Minute filaments, branched, creeping between the cells of the host and with erect external filaments. Appearing as spots.

Habitat: endophytic in various algae.

Distribution: Recorded from a few scattered sites around the British Isles. Europe: France and Norway. Atlantic coast of North America: Canada, Maine and Massachusetts.

Distribution Map from NBN: Streblonema parasiticum at National Biodiversity Network mapping facility, data for UK.

iNaturalist: Streblonema parasiticum at iNaturalist World Species Observations database.

WoRMS: Streblonema parasiticum at World Register of Marine Species.