Is there a list of the spider families in which are absent cheliceral teeth and/or serrula?
I know that some families lack of chericeral teeth (e.g. Thomisidae) or serrula (e.g. Zodariidae) but a complete list would be useful. I tried by using keys, but these features many times are not cited because they are not a strictly taxonomic key (except for some cases, such as Gnaphosidae).
Thanks in advance
Dear Emanuele,
For most established, older families, you can easily find reference in Jocqué & Dippenaar-Schoeman (2007). https://www.africamuseum.be/sites/default/files/media/docs/research/publications/rmca/online/zoology-documentation/spider-families_of_the_world.pdf
For newer families not included in their work, or subfamilies which have since been elevated, you should try to consult the works that elevated/described these families. If not present in those works, you might like to try contacting the authors of those works directly. If you get stuck with any of the newer Mygalomorphae families you can email me, I'll try to help as I've examined representatives of almost all extant families of mygalomorphs. It's also very important you check circumscriptions of any families which recently underwent extensive revisionary work.
In some taxa, it's very obvious - such as Theraphosidae where cheliceral teeth counts are included in many descriptions (thereby present), and only a handful of genera have maxillary serrula (example: Plesiophrictus), this being the exceptional character state.
Best wishes,
Danni
There are some cases in Corinnidae (tribe Attacobini), Attacobius and Ecitocobius. See Bonaldo (2000) in WSC.
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