Small spider - Walckenaeria cornuella

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Home » Guide » Arthropods (Arthropoda) » Chelicerates (Chelicerata) » Arachnids (Arachnida) » Spiders (Araneae) » True Spiders (Araneomorphae) » Entelegynae » Sheetweb and Dwarf Spiders (Linyphiidae) » Dwarf Spiders (Erigoninae) » Walckenaeria » Walckenaeria cornuella

Photo#703552

Copyright © 2012 Kyron Basu

Small spider - Walckenaeria cornuella -

Cowichan Valley, British Columbia, Canada
September 13, 2012
Size: 2.2mm body length

Found this attractive spider under a piece of wood near our woodpile. Smallest I've yet photographed! She rarely stopped moving though, which made her a difficult subject.

I'm thinking Linyphiid, but I'm not sure what. I'll give her some moist wood to hang out on and keep her for a bit, so if necessary I can try getting a better epigynum shot. It's enlarged to about 150% as is though, and I'm approaching the limits of magnification I can get with my current setup.

Images of this individual: tag all

Small spider - Walckenaeria cornuella - female

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Contributed by Kyron Basu on 14 September, 2012 - 12:24am
Last updated 14 September, 2012 - 3:33pm

From Rod Crawford

Very nice, it's Walckenaeria cornuella (Chamberlin & Ivie). In case he should find a male, they are very distinctive by the wee little carapace horn, smaller than in any other species. Oddly enough I wasn't able to find any online photo of the horn, but it's illustrated in the Millidge revision of the genus which can be downloaded from the Journal of Arachnology.

Moved from Spiders. A new species for the guide. Nice!

… Lynette Elliott, 14 September, 2012 - 3:33pm

Walckenaeria cornuella

Great, thanks!

… Kyron Basu, 14 September, 2012 - 7:01pm

Images added

Uploaded a new epigynum photo, and a shot of the face I forgot I had.

… Kyron Basu, 14 September, 2012 - 1:47am

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