I quite often see small pale-coloured spiders abseiling over ivy leaves against tree trunks. Immature male theridiid was suggested as a possible ID from an image that I submitted to iSpot about a year ago*
Here is a second spider (female?) that I saw on Dec. 30th; it looks somewhat different i.e. the cephalothorax region appears translucent. Is it possible to say more about ID? I haven’t seen a larger version of these spiders on ivy.
* “Small spider under ivy leaf” (Added to iSpot 9th Dec. 2011)
From the pale legs I'd say this is a very young spider. The pattern on the abdomen is similar to some theridiids but it's hard to be sure. Frankly I'd forget about having it ID'd. It's hard enough to ID adult spiders from photos and juveniles are even harder.
Thanks for the reply. If these are simply very young spiders, an interesting question is where are the larger adults? One year on from the iSpot post, I have yet to see an example. So, while these spiders may have features of immaturity, perhaps they consist of one or more actively reproductive species that are adapted to this particular environment. I shall keep looking for larger ones.