30. tammikuuta 2023

Watercress - N. officinale or floridanum

If you want the best way to tell them apart, find some with emersed grown stems and take a picture of the joint on those (as it can be hard to see on submersed growth). If the auricle (the little flap at the crease of the joint) is there, then it’s regular N. officinale. But if it’s totally smooth, it’s N. floridanum!

Lähetetty 30. tammikuuta 2023 12:57 käyttäjältä mfeaver mfeaver | 3 kommenttia | Jätä kommentti

10. tammikuuta 2023

18. joulukuuta 2022

Fishing spider - specimen for Ray Fisher

Hi and thank you for the reply. I'll accept dead or alive, but I prefer alive. I may be able to get free overnight shipping. I'll give more instructions on shipping when/if you can get some specimens.

Waiting until January is no problem. There's no rush.

At present, we only have some DNA gathered from 23 specimens across eastern US and Canada. Although they are closely related to six-spotted fishing spiders (D. triton), they might be a new, undescribed species of Dolomedes! How have they gone undetected? Perhaps because they resemble juveniles Dolomedes. All we have are these two photos to aid the search:

https://www.boldsystems.org/pics/MGOCF/150821_22175-85%2B1461629936.jpg
https://www.boldsystems.org/pics/MGOCF/150821_22061_and_63-64%2B1461629932.jpg

To my eye, some of your iNat observations resemble these photos. Here are some examples:
https://www.inaturalist.org/observations/114488472
https://www.inaturalist.org/observations/87066708
https://www.inaturalist.org/observations/94399548
https://www.inaturalist.org/observations/96319324
https://www.inaturalist.org/observations/143609438
https://www.inaturalist.org/observations/98066866
https://www.inaturalist.org/observations/98154256

Most probably, most of these are in fact juveniles. But with a little luck and a lot of specimens, maybe we can get specimens of the new species!

Happy hunting!

Ray

Dece

Lähetetty 18. joulukuuta 2022 13:43 käyttäjältä mfeaver mfeaver | 0 kommenttia | Jätä kommentti

7. joulukuuta 2022

Bumbee Bee ID'

Lähetetty 7. joulukuuta 2022 17:33 käyttäjältä mfeaver mfeaver | 0 kommenttia | Jätä kommentti

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