Posted by Juergen Peters on 30-05-2018 10:13
#4
Hello John,
hmm... I had excluded
Hydrotaea diabolus because of its dark, shiny black colour and the "spur" on its mid leg.
Below pics of confirmed (if I remember correctly, by Stéphane Lebrun)
Hydrotaea dentipes (upper) and
diabolus (lower).