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- ›Helobdella stagnalis

Golden Gate Leech
Helobdella californica
Helobdella californica is a leech of the family Glossiphoniidae. It is endemic to Golden Gate Park in San Francisco. While originally discovered on the shore of Blue Heron Lake (formerly Stow Lake), in 2026 the species was also observed in nearby Mallard Lake.
== References ==
Where it lives
Recorded sightings
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geo-referenced records in GBIF, from museums, herbaria and field observers.
Drag the globe to turn it. Dots are where records exist, not a range map; darker means more records.
In the stacks
Searching the stacks…
Every page naming Helobdella californica in the Biodiversity Heritage Library →
This page is assembled live from iNaturalist, GBIF, Wikipedia, the Source Library and the Internet Archive. It is not yet part of the hand-edited codex. iNaturalist taxon 1623657.