Vinny's picture

Raft Spider female

Observed: 31st May 2013 By: VinnyVinny’s reputation in InvertebratesVinny’s reputation in InvertebratesVinny’s reputation in InvertebratesVinny’s reputation in Invertebrates
Species interactions

No interactions present.


Alan Thornhill's picture

That seems to be a new site

That seems to be a new site for Dolomedes, but how are you sure it's fimbriatus?

Vinny's picture

I've been reporting sightings

I've been reporting sightings of D.fimbriatus from this location for quite a few years (my first actual record is from around 2005 - please see following link which shows the images I have captured at this site: ). You are of course correct to challenge if you thik it is another species. But what else do you think it could be apart from D.plantarius?

Alan Thornhill's picture


Hi Vinny, I'm somewhat puzzled. I looked at the map that appeared when I clicked on your location and it didn't appear to correspond to a square on this map -

That was the only reason for my comment.

Vinny's picture

I've just looked at my map

I've just looked at my map and the Dolomedes distribution map, and I think my location ties in fine - the square immediately to the left and above the Isle of Wight has two grey dots in the top. To me this indicates the Town Common site (the right-hand dot) and Sopley Common/Ramsdown. Bother areas are low lying heathland, full of Odonata and other insects - and with plenty of marshy pools with tall grasses such as Molinia cerulea which Raft Spiders love to nest in.
Just wondering, when you click on my map are you seeing the same location? Might be a glitch.
BTW found 3 Raft Spider nests in the New Forest on Saturday 13/07/13! WIll be adding this as an observation soon :)

Alan Thornhill's picture

My mistake

Sorry, when I zoomed out on the iSpot map I thought that the blob of land that appeared in the sea on the left (West) was the IoW and I was taking my bearings from there. But if I zoom out further it's a peninsula and the IoW is the blob to the right. How embarrassing.

Alan Thornhill's picture


that aside, I've only ever seen plantarius, not fimbriatus, and I was just curious if there's a way of telling them apart by sight, which was partly the reason for my original question.