Already found another one this morning. Butterflies have no nerves or blood vessels in their wings. Because of that, Janine Bendicksen has successfully performed what is likely the first ever wing transplant.
From the (British) Amateur Entomologistsā Society website definition of aedeagus:
In some species, for example some crickets, the aedeagus is also used to release a spermatophylax. The spermatophylax is a gelatinous substance that the female insect consumes and this provides sustenance to the female.
Freshwater limpets will attach themselves to any smooth surface available to them. This apparently includes the carapace of beetles, as shown in this observation I stumbled upon yesterday. Another user found a paper describing the phenomenon, and while Iām still trying to find the full text of that paper, it seems limpets may actually use beetles and other aquatic insects as a method of dispersal.
This is likely to be the best one for me this week:
According to Wikipedia https://en.wikipedia.org/wiki/Nematode , 80% of individual animals on Earth are nematodes. Canāt confirm any sources though.
I was surprised by this as I always heard and read that around 80% were arthropods, but it turns out thatās 80% of species are arthropods but nematodes are apparently 80% of individuals.
Iād be curious to track down the sources for this when I have the time, whether these figures are just pop sci thatās been repeated so often that people take it as truth or if it actually is true.
According to Animals Without Backbones, part of our recommended reading at college, nematodes are so numerous that if all other matter on earth disappeared, you would still be able to make out the shape of the planet. Under what conditions of distance and camera type may not have been specified, and fortunately no one has tried to confirm this claim.
More recently, but still at least two decades ago, zoologists studying marine nematodes suggested nematodes may also be the most species-rich group on earth, beating the arthropods. This was based on the number of new species found in sediment samples from the deep sea, and the large percentage turnover in species you got by travelling only a short distance between samples. I donāt know whether that theory has stood the test of time.
Nature is full of natural origami structures. For example, the microscopic organism Lacrymaria olor can extend itās neck 30 times the length of itās body because of complex folds and microtubule structures.
https://www.goodnewsnetwork.org/animal-origami-the-physics-of-natures-folds/
What I learned this week (from reading that article) is:
Earwigs have wings?!!
That too, although I had a less friendly name in mind. Hint: it starts with the letter A.
Now I have a new life goal.
a few months ago a greattttt youtube channel (Ant Lab, by Dr. Adrian Smith) added a video showing off earwig wings. the wings are kept folded up and tucked away, which is why you havenāt seen them!
https://www.youtube.com/watch?v=uvXxiUjw-xY
i am not sure if youtube links are allowed ā if not and this gets edited, the video title is āRove Beetles & Earwigs - Natureās Most Complex Wingsā ā¦ and then go watch all the rest of the videos on the channel!
It honestly reminds me of that funny A Mole of Moles strip, in which the idea of of gathering together a mole of moles is discussed. I donāt think it ended very well.
https://what-if.xkcd.com/4/
Anyway, it made me thinkā¦what would happen if you had a planet entirely of nematodes (Which seems to me what you suggested above)? Something similar? I doubt we will ever knowā¦unless @tiwane has a remarkable idea for getting it done. 
Yeah, itās easy to forget until they fly out of the photo sessionā¦wait, what? 
I do find etymology interesting, and many orders of organims names will give you clues.
Earwigs are Dermaptera aka skin-wing. " The scientific name for the order, Dermaptera , is Greek in origin, stemming from the words derma, "meaning āskinā, and pteron (plural ptera), meaning āwingā
When I was younger, although I would use the term earwig, I would often hear the older generations use the term earwing.
On google scholar whilst some newer journals still use earwing, you will note, a lot of the results are older https://scholar.google.com/scholar?hl=en&as_sdt=0,5&q=earwing&nfpr=1
I wanted to post in that thread, but itās timed out. Anyway, fun fact, apparently fish are noisy. I knew the obvious ones like whales and dolphins, but never really thought about the general soudscape of marine life.
Scientists are now working on ai tools to identify fish by sound around coral reefs. Theyāve been using sound to asses reef health for a while, but want to go further and identify individual species by sound.
Article I found. https://www.goodnewsnetwork.org/new-underwater-tool-can-id-fish-from-their-sounds-46-species-so-far/
Open library of recorded sounds.
Which thread are you referring to? We can re-open it and attach your post to it.
The first time I SCUBA dived on a coral reef, I was amazed at the variety of sounds. I hadnāt expected anything but waves and bubbles, but there were all kinds of grinding, popping, squeaking, etc.