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hellgrammite!!! (eastern dobsonfly nymph)
I love these so much, their patterns are so beautiful. They can bite pretty hard, but i’ve never had one bite me at all. otherwise they’re harmless!
you can see its abdominal gills as well, which are really fucking cool !!
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In my efforts to better appreciate all species, including the ones that scare me, I present Lethocerus! These can be found in slower moving bodies of water and have a very high pollution tolerance, ranging around 9/10 on the NCBI scale. They are carnivorous and catch prey with their "raptorial" arms (similar to mantises) and use their modified mouth pieces to dissolve and suck up their food. Their bites are extremely painful and have been known to bite humans out of defense if threatened, earning their nickname as "toe biters". They are also flying insects, and are very attracted to artificial lights!
copepod autocoprophagia
aka nasty dude caught in 720p
Why you SHOULD flip over rocks in streams and rivers
If you've ever nudged over a big rock and seen a cricket-looking alien with seemingly too many legs, you've encountered a stonefly! For scientist Anna Eichert, standing waist-deep in a river looking for these critters is the best part of her job, and something she feels should be important to everyone. "We kind of joke around here in my lab that ‘insects don't have rights’" she explains, "because like when you study other groups of animals and biology, it's much harder to be able to obtain samples and specimens and et cetera. And so I think it's just super important to just have them on your mind and educate other people of their ecological importance and educate your children so that they can love and not fear insects. You know, even that makes a difference."
Stoneflies, or Plecoptera, are an order of insects with around 4,000 species. But that’s about to change. In her paper “Stonefly systematics: past, present, and future,” Anna and her colleagues from around the world map out the way stoneflies have changed as a group over time, some of the factors that shape our current understanding of stoneflies, and what can change in the future to make sure our knowledge of stonefly diversity continues to grow. Learn from Anna’s account of her experiences and her passion for stoneflies in this episode, and next time you encounter a stream, flip over a rock or two.
Anna Eichert’s paper “Stonefly systematics: past, present, and future” is in volume 9, issue 4 of Insect Systematics and Diversity. It can be found here: https://doi.org/10.1093/isd/ixaf026
Listen to the episode here, or wherever you get your podcasts
Photo credit: Anna Eichert
How to Test Water Quality in Lakes and Ponds: What Macroinvertebrates Can Tell Us
Clean water is essential for healthy ecosystems, recreation, and safe communities. While professional laboratories use advanced chemical testing methods, there are also low-cost, hands-on ways that anyone can assess water quality in nearby lakes and ponds. One of the most effective approaches, as Presence News reader Ben points out, is by examining the macroinvertebrates living in the…
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girl hellppp. I’m in the detritus,, girl!
Flatworms are the best
