Posted by Carnifex on 01-08-2026 08:00
#1
with the british key (Drake), I nicely land at
Notiphila guttiventris.
However, according to GBIF that is a synonym of
riparia.
The key, however, distinguishes the two species - so now I am in doubt
Garden pond in Lower Austria, early July
Posted by Tony Irwin on 01-08-2026 09:00
#2
GBIF's placement of
guttiventris as a synonym of
riparia is based on a paper by Dahl (1959). Later papers (including Mathis and Zatwarnicki's Check List) restored
guttiventris to full specific status.
Posted by Carnifex on 01-08-2026 11:18
#3
Thanks Tony, that this could be resolved. Currently there aren't active identifiers of Ephydridae in this forum, it seems.
Posted by Tony Irwin on 01-08-2026 14:49
#4
I try to ID ephydrids when I'm confident, but
Notiphila can be tricky at times.