These are the webs of Tube Web Spiders. The largest of which is Segestria florentina. If you are not of a nervous disposition you can sometimes get them to come out by tickling the radiating 'trip wires' that come from the tube. Just a brief warning, picking up Segestria can be a little fraught as they are a bit of a biter. Lewis
Hi, we prepare an atlas of Czech spiders, the introduction will contain several chapters about spider natural history. Therefore we look for some illustrations. I found your nice photo of Segestria tube. Could we use it in the atlas? Of course, you would be stated as the author of the photo. Thanks in advance for consideration! Please, answer to my email email@example.com, I am not a regular visitor of this portal. Cheers, Milan Rezac
Lewis - nice!
Milan - I am contributing photos of Cyprus moths and other wildlife to a new book, so I have some spider photos.
I hope you don't mind: I have emailed some of them to you, in case they are of interest, for instance for non-location-specific behavioural shots.