Ischnura gemina

[2] This species is similar to Ischnura denticollis, and can be distinguished by the shape of the male genital appendages.

[3] The natural habitat of the species is the various wetland ecosystems of the San Francisco Bay Area, including seepages and ponds.

[2] Populations of this damselfly have been extirpated due to the destruction and degradation of habitat in the heavily urbanized area where it occurs.

It lived in wetland habitat in Glen Canyon Park in the city of San Francisco until these moist spots were fragmented too extensively to support populations.

It has been downgraded to vulnerable status because it has been located at a few more sites, it has good dispersal ability, and it is relatively resistant to some of the forms of habitat degradation that it faces, such as pollution.