Originally described as feminine (or at least treated that way with the species listed under it) but one later author seems to have decided/figured out it's actually masculine. Agricola, rupicola, etc. are all masculine so this should be too? MolluscaBase treats it as feminine.
https://commons.wikimedia.org/wiki/File:Land_Mollusca_of_North_America_(north_of_Mexico)Vol._I_Part_2(2nd_half).pdf
https://www.biodiversitylibrary.org/page/42465744#page/150/mode/1up

I vote we go with Molluscabase
is this closeable?

OK, FWIW we now have a taxon framework linked to MollucaBase for all of the phyla
https://www.inaturalist.org/taxa/47115-Mollusca/taxonomy_details
But there's still 1818 relationship unknown taxa (that we should swap or make deviations for)
and 70 flags

According to the code this would indeed be feminine because Pilsbry treated it as feminine in his combinations. I'll do the swaps at some point. See discussion here:
https://www.inaturalist.org/observations/86789471

Ah I actually emailed Barry Roth about this and haven't gotten around to implementing the change here. This is what he said:

Vespericola was validly proposed on an introductory page (XVII) of volume 1, part 1 of Pilsbry's Land Mollusca of North America (1939). There the new genus-name was not printed attached to any associated species-name. Thus its gender was unspecified. Per the Code, in such cases the gender is to be treated as masculine. The fact that Pilsbry treated it as feminine in his full (1940) writeup is irrelevant.

So these should have masculine endings where applicable, as is found in Roth & Sadeghian
https://www.researchgate.net/publication/260106779_Checklist_of_the_Land_Snails_and_Slugs_of_California_Second_Edition

I emailed them and they didn't update. But I think we have better success emailing individual editors than the general help.

the March monthly WoRMs archive is still consistent with whats on iNat https://www.inaturalist.org/taxa/233542/taxonomy_details so my preference is to wait until April to change these to avoid confusing iNat when it references that archive

yes - they're on to the June Archive everything is pretty up to date and they seem back on their monthly schedule. I don't know why they were so delayed on that March archive

eitherway - if backend, can you list them out here like:
Input, Output
Blahblah blahblaha, Blahblah blahblahus
...

I'll manually do V. columbianus to have a record of the change happening. V. armiger is just undoing a previous swap I had done.

Thanks!