Mating slugs

I know PZ has recently posted a picture and a video of slugs mating. But these pictures were taken here in North Carolina, by blog reader Kris Barstow, who says:

The year was 1999 plus or minus a year, the site was a few miles from Asheboro, NC. I don't recall the season, but it was warm, and there is definitely a chill there in the cold seasons, so I assume spring or summer. It was about half an hour after sunrise; I was walking my dog. I would occasionally carry my camera "just because ..."

I saw these two acting strangely on the surface of the wooden shed. They actually attached themselves, then went into freefall. They twined around each other, and then a moist pouch was extruded below them. White froth was present but in moderation.

I don't recall what exactly happened after that. They remained suspended for some time, and the likeliest thing is that I left them to their passion.


So, can someone identify the species?

More like this

Regular readers must be familiar by now with the ZooSchool in Asheboro, NC. Today's news from the school - their students have put up the first issue of their online newspaper, the ZSX-Press. Go check it out! In related news, and also at the Asheboro Zoo and related to education, The NC Zoo and…
If you've ever wanted to know what ScienceBloggers are like in the real world, and you're going to be in the general vicinity of Asheboro, North Carolina (that's halfway between the mountains and the ocean), drop by the NC Zoo on Saturday, Sept. 20, where most of the state's ScienceBlog contigent…
If you read my blog you must be aware how enchanted I am with the ZooSchool in Asheboro, NC. Unfortunately, at the last moment something came up, so the delegation of two teachers and six students could not make it to the Conference three weeks ago. I intend to go and visit there some time soon…
A few days ago I wrote about the Zoo School in Asheboro, NC. It is even better than I thought - I got in touch with their lead teacher and she told me that all of their students have laptops in the classroom with wireless access. Their classrooms also have Smartboards and other cool technology.…

How big are they? Limax maximus mates dangling from a mucous thread like that. Adults are about thumb sized.

I would have pegged them as Limax maximus because of that acrobatic behaviour. Haven't seen them that colour before so they may be something else. The ones I see in my garden here in southern Australia are usually more grey and black.