Hill lough on Garron Plateau, Co Antrim.
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Really starting to wonder about my newly hatched statement above?
It looks a bit worn, when I first spotted it on the water with wings held up, something it repeated on my wellie boot as in photo, it was slowly drifting shorewards as a newly hatched lake caddis does. I dont know, the big abdomen may suggest a female laden with eggs and it is possible it has already mated and was ovipositing.
It looks like pics of A.varia Ive viewed online.....?
This is a very interesting photograph and a very rare one. The pale colour indicates it had just emerged and for a brief moment they hold their wings like this. I have seen very few photos of caddis at this stage. I do not think they do this behaviour after going underwater to lay.
Ian Wallace, UK Trichoptera Recording Scheme
Yeah this was a baffling encounter at first. There are no large mayfly on this small upland water but when I saw this insect drifting towards me I thought I was seenig a large mayfly species. Pretty weird. It came right in close and I tried to snap it on the water but it instantly closed its wings down into normal caddis orientation. I thought I'd missed the chance but very luckily, while it was on my boot, it once again hoisted its wings up over its back and held them there.
As I said I hadnt seen any caddis behave like this before but Ive seen it once or twice since and I do believe it was newly hatched insects doing it. On a different small upland lake Ive seen Phryganea bipunctata doing it, alnost got the photo last year but it didnt hold the wings up long enough for me to get in range-it was again drifting on the water, I think between hatching and begining to motor shorewards. They look so big when holding the wings up. I hope to get that pick this year of P. bipunctata doing this behaviour.
Thanks for comment.
I thought caddis oviposited from the surface? Do they actually go underwater?
Hi Ian, I snapped a Phryganea female doing this back in June of this year. I must post that one also.
Phryganea sp., newly hatched and doing the same thing.
Lat/Lng: 55.013, -6.009
OS grid ref: NW437760