From Identifying Land Snails and Slugs in Canada.
Does anyone know if there is a checklist of species for Ontario? Sometimes it is unclear from the book whether or not a species is in Ontario, but when it is I've marked them with an asterisk (*). Probably/Possibly in Ontario are marked with (~). Unknown/Unclear are hopefully marked with (?). There are quite a few species only in BC. Please let me know if you have any questons.
Genus Milax
Genus Lehmannia
Genus Limacus
Genus Limax
Genus Deroceras
Genus Boettgerilla
Genus Arion
Arion intermedius *
Subgenus Arion (ater group)
Arion rufus
Subgenus Carinarion (fasciatus group)
Arion silvaticus *
Subgenus Kobelita (hortensis group)
Arion hortensis ?
Subgenus Mesarion (subfuscus group)
Genus Prophysaon
Genus Kootenaia
Genus Ariolimax
Genus Magnipelta
Genus Hemphillia
Genus Megapallifera
Genus Pallifera
Genus Philomycus
評論
As I find information I'll post it here. I am very interested in this region especially around the great lakes as it seems to be an area where at least two species meet. According to this link below, Philomycus batchi is synonymous with Philomycus togatus so P. batchi can probably be taken out as an option.
https://www.carnegiemnh.org/science/mollusks/va_philomycus_togatus.html
In the research document below I think it's important to note that in the survey done, Philomycus carolinianus was not documented as being found in Pennsylvania, only being important to the topic at hand in that I suspect any observation in New York of P. carolinianus is less likely to be correct, though there may still be a presence that hasn't been documented. If that is the case, I have another source I'll mention later that shows Philomycus being documented in one of the U.S. counties at the southern tip of Lake Erie. I suspect that Philomycus carolinianus extends into southern Ontario from that point. How far is probably a case of preferred habitat but I'm just speculating.
http://research.dcnr.pa.gov/GetPDF.ashx?1133+R
I don't have time to review this source at the moment but it appears to have some information on Philomycus carolinianus in Ontario.
https://www.canada.ca/en/environment-climate-change/services/species-risk-public-registry/cosewic-assessments-status-reports/carolina-mantleslug-2019.html
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