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New agelenid genus Eratigena

The following taxonomic changes affect North America:

Tegenaria agrestis is now called Eratigena agrestis
Tegenaria duellica/gigantea, T. saeva, and T. atrica are all synonymized under Eratigena atrica
Malthonica pagana moved back to Tegenaria

These changes are already in effect, but the World Spider Catalog has not listed them yet (since it's only updated every 6 months). They'll be shown in version 14.5 at the end of this year. I doubled-checked with Dr. Platnick to make sure they would be reflected there (they will). So, like with Tigrosa a while back, I guess we just move things now since the paper is already out (someone commented in re: to Tigrosa that since the paper is published, that means it is in effect immediately).

Note that Tegenaria domestica and Tegenaria chiricahuae have not moved (still in genus Tegenaria).

The recent research responsible for this change was published in this paper:

Bolzern, Burckhardt, & Hänggi, 2013. "Phylogeny and taxonomy of European funnel-web spiders of the Tegenaria-Malthonica complex (Araneae: Agelenidae) based upon morphological and molecular data." Zoological Journal of the Linnean Society 168: 723–848.

Both morphological (physical traits) and molecular (DNA/genes) analyses were used to determine that those species belonged in a separate genus.

There were many other (overseas) species that were affected in the findings, but I've only listed the species we can find in North America, since that is what we deal with here.

Looks like a few of us misread this paper (not you guys, but the folks I've been talking with)! It's about 126 pages and though I still briefly looked through it, I took someone else's word on the new changes (won't make that mistake again!).
The changes are actually way bigger! Tegenaria duellica (=T. gigantea) AND T. saeva are both synonymized with Eratigena atrica! So actually now the only species of huge, long-legged funnel weavers is Eratigena atrica! No more calling anything duellica/gigantea/saeva anymore - they're all E. atrica (unless the additional studies they're doing can falsify the findings of the paper, that is). I've confirmed all this personally with the paper's author (Angelo Bolzern), so no mistakes this time.
Sorry everyone! I'm currently fixing this grave error in the Guide....
This will definitely take a while to commit to memory!
(I edited the original forum post to add the correct info.)

Holy Cow again
We lost a species! Well I guess it will make it easier to ID those huge ones. =] Thanks much for doing all the research & work!

Holy cow is right, haha! But I agree, it will also make it easier to ID the big ones. Sorry for the big mistake the first time around! I think I have it all worked out on BugGuide now. I kept the original T. gigantea page since it had all the info, but then just renamed it to Eratigena atrica and then edited the text as needed. Then deleted the actual atrica page we already had (only had a few pics there, which I moved beforehand). Also edited the Agelenidae, Tegenaria, and Eratigena pages. Hopefully I got everything. (And hopefully we won't have to move them back in a year or something! ha Angelo Bolzern said they are still currently doing more work to see if they can falsify the results, but from what I've heard from most arachnologists, including Dr. Platnick, the change seems valid.)

Holy Cow
Interesting changes! Thanks Mandy.

Well, it's done =)
Thank you for your input, everyone! I went ahead and moved everything, which included changing all the species info pages to reflect the new genus names, so hopefully I didn't miss anything. If anyone has time and would like to double check things, that would be great.

I also did end up moving Tegenaria gigantea to Eratigena duellica.

This is sure a surprise. Tegenaria was easier to pronounce! :)

Following the WSC sounds good to me. Especially as the number of editors contributing to the spider section goes up, I think it's important to be consistent.

How are you pronouncing it? I would say era-TIG-ena, which is not sooo difficult.

That's more or less how I originally wanted to pronounce it too. Mandy explained it a while ago, it's supposed to be air-uh-TIH-jen-uh.

Okay, that works for me, too.
Okay, that works for me, too. Thanks.


air-uh-TIH-jen-uh is how Dr. H. D. Cameron said it should be pronounced (I've been consulting him for our species guides at, to make sure I'm writing the pronunciations correctly).

I also agree with following the WSC.

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