nightfly's picture

Potamophylax caddisfly.

Observed: 26th May 2012 By: nightflynightfly’s reputation in Invertebratesnightfly’s reputation in Invertebratesnightfly’s reputation in Invertebratesnightfly’s reputation in Invertebratesnightfly’s reputation in Invertebrates
26 May 2012 Gren (20)
26 May 2012 Gren (19)
Description:

Another pic attached of the insect without so much glare obscuring the wing markings, markings which I now think are more consistent with Potamophylax rather than Halesus. IE pale dashes against dark as opposed to dark dashes against pale.

Identifications
Species interactions

No interactions present.

Comments

Peadar na Breac's picture

You may well be right ....

Cathal,what strikes me when I look at pictures of both is the length of antennae.Halesus appear to have shorter antennae than Potamophylax, when compared to wing length.But I'm only looking at one set of photographs.
Peter

nightfly's picture

Peter, as soon as I locate

Peter,

as soon as I locate the caddisfly guide I'll get a look at those antennae, I think its inside a moth book. I think the Potamophylax are quite similar to Halesus, for a long time Ive been looking at these darker less well marked caddis thinking they were probably halesus but then when I see a true Halesus I wonder are these other ones that species at all? I see caddis like the one above on rivers and then at the back door light and there is no body of water nearby here, but the true Halesus is unmistakable when observed up at the lakes on the hill. To be continued.

Cathal.

nightfly's picture

I found the guide and then I

I found the guide and then I found a better pic, one which should have been used at tthe start. Not that I wouldnt have posted it as Halesus originally, as until you gave me that guide Peter, I was calling Potamophylax Halesus but I knew I was ignoring a pretty obvious difference at the same time. I do see the difference in the antennae lengths in the guide but the wing markings are quite different.

Cathal.