Can anyone advise me on the best way to differentiate the Common Water Strider (Aquarius remigis) from other water strider species without capturing one? I see that there are many ‘research grade’ photos on iNaturalist and I’d like to know how they are being identified. From the reading I’ve done it would seem that the key features are nearly impossible to see in photographs. Am I overlooking something? And is there something apart from size that would be useful in making a field ID when a photograph isn’t possible?
I’d very much appreciate if anyone can shed some light or point me to a good species-specific reference. Thanks!