Medium
Photo © ablevins, all rights reserved
Lakeridge Park (Google, OSM) Details Hide details
Logo eee 15px

Comments & Identifications

Thumb
Black Slug - Photo (c) langleyo, some rights reserved (CC BY-NC-ND)
ablevins's ID: Black Slug (Arion ater)
Posted by ablevins almost 5 years ago (Flag)
Thumb
Black Slug - Photo (c) langleyo, some rights reserved (CC BY-NC-ND)
rcollin's ID: Black Slug (Arion ater)
Posted by rcollin almost 5 years ago (Flag)
Thumb
Black Slug - Photo (c) langleyo, some rights reserved (CC BY-NC-ND)
brewbooks's ID: Black Slug (Arion ater)
Posted by brewbooks over 4 years ago (Flag)
Thumb

The mantle on this one looks humped. Maybe a native? You guys have a lot of cool natives out that way that this might be.

Posted by berkshirenaturalist over 1 year ago (Flag)
Thumb

Do you recall the encounter with this slug. What are the chances it's Hemphillia dromedaries as mentioned in this link. http://academic.evergreen.edu/projects/ants/TESCBiota/mollusc/key/webkey.htm I just think the mantle appears to have a distinguishing looking hump.

Posted by berkshirenaturalist over 1 year ago (Flag)
Thumb

According to the experts (Burke 2013, Forsyth 2004), Arion ater and Arion rufus can only be separated by dissection and comparing genitalia. The black morph of Arion rufus is not uncommon.

Burke, T. E. (2013). Land snails and slugs of the Pacific Northwest. Oregon State University Press.

Forsyth, R. G. (2004). Land Snails of British Columbia. Royal BC Museum.

Posted by pileated about 2 months ago (Flag)
Thumb

Hemphillia dromedarius has a much thinner tail

Posted by pileated about 2 months ago (Flag)
Thumb

You see what I mean by the monster hump though right? I still have a hunch this isn't an Arion but maybe a dark variation of Prophysaon or something else. I would say more photos are needed to be sure. The fact that it's on rotted wood with moss also kind of suggests a possible native, rather than an introduced species. I might be wrong. I have been before but an Arion Id just doesn't sit right with me.

Posted by berkshirenaturalist about 2 months ago (Flag)
Thumb

I believe the hump may suggest an internal shell.

Posted by berkshirenaturalist about 2 months ago (Flag)
Thumb

Yeah @berkshirenaturalist, I am unsure what this is. It could be a very dark Prophysaon.

Posted by pileated about 2 months ago (Flag)
Thumb
Posted by pileated about 2 months ago (Flag)
Sign in or Sign up to add comments
Sign in or Sign up to add identifications
Black Slug - Photo (c) langleyo, some rights reserved (CC BY-NC-ND)
ablevins's ID: Black Slug (Arion ater)
I
Black Slug - Photo (c) langleyo, some rights reserved (CC BY-NC-ND)
Community ID: Black Slug (Arion ater)
I
About
rcollin brewbooks 2 people agree
Logo eee 15px
Logo eee 15px

Data Quality Assessment

Research
Details Hide details
Logo eee 15px
Observation © ablevins
Cc by small some rights reserved
Pin it button
Member of the iNaturalist Network   |   Powered by iNaturalist open source software