Calanus finmarchicus?

Not finmarchicus but definitetly a Calanoid

Calanus finmarchicus is a North Atlantic species. In your area there are C. marshallae, C. pacificus, Neocalanus plumchrus, and N. flemingeri, although the urosome on this gal seems more like a Mesocalanus tenuicornis unless it was squished at some point. The total length would be very helpful in identifying her.

… Caitlin McKinstry, 21 September, 2016 - 1:08pm

Nannocalanus minor

I know this is super old, but commenting for future image searches.

This is Nannocalanus minor. Recognizable by the flanges that hang down on either side of the relatively short urosome, and to a lesser extent by the bands of orange pigment at the edges of the metasome segments.

… Moara, 28 November, 2022 - 12:52pm

Thanks!

I assume you are an expert in copepod identification. Would you mind adding to your user page a short bio with relevant credentials and any institutional associations? It doesn't have to be longer than a couple sentences; Caitlin's is a good example. Such information helps users judge the credibility of new users with expertise, especially when (as in this case) it's on a group basically no one else on BugGuide knows.

By the way, there's no need to comment on all images of a single specimen. If you'd like to stick around here and contribute more identifications on BugGuide, I recommend watching the series of videos about using the site so you can get up to speed right away. It would be great to have some expertise here on copepods and some other marine arthropods. That would also get me motivated to photograph more plankton in the next few years.

… Aaron Hunt, 28 November, 2022 - 1:21pm

Thanks for the info

It's certainly possible it was squished. As for length, I didn't measure it but I do recall it being relatively large.

… Aaron Hunt, 21 September, 2016 - 2:24pm