penanatomy-studies - Tumblr blog

[penanatomy-studies]

the paralyzed cicadas I picked up from a failed cicada killer nest are the perfect material to show off some cool features of insect anatomy! (although the wasp’s venom would keep them alive for her larvae to eat, I froze them to make sure they’re fully dead for dissection).

cicadas are powerful, fast fliers, and all of their thorax is taken up by a bulk of reddish, stringy flight muscles, which I’ll talk more about later. this cicada is a female, so her abdomen is full of white, elongated eggs that she will insert into tree bark with the bladed ovipositor at her rear.

the male cicada’s abdomen, however, is almost entirely empty, and that air-filled space is used as a resonator for his loud calls. the biggest structure visible there is a curved pair of muscles that deforms the tymbals, producing a click with every contraction.

here's a view of the complete muscle, and the tymbals themselves which look like overlapping plates on his belly. if you're curious what the white frosted appearance is, some Neotibicen have a coat of waxy powder or pruinescence; this male N. tibicen is particularly pruinose.

onto the flight muscles:

powered flight is a pretty complex mechanism in any organism, and is never so simple as just flapping wings up and down, but most insects power their flight in a really unintuitive way (at least for us vertebrates): they contract muscles in their thorax that aren’t even attached to the wings!

this method of flight is called indirect flight, in contrast to the direct flight of the dragonflies and mayflies where each of four wings is directly attached to a muscle and can flap on its own.

instead, most insects have a longitudinal (image 1 above, d below) pair and a vertical (2, c) pair of muscles that deform the shape of abdomen, pulling the upper segment of the thorax (notum) up and down, and this moves the wings which are attached to the notum. useful indirect flight gif from wikipedia found here

even if compressed manually, the dead cicadas "flap" their wings due to the motion of the notum:

insect flight is a lot more complicated than this simplified look at them, but I think these cicadas offer a pretty good look at how most insects get around essentially by squishing themselves internally!

[penanatomy-studies]

more art from my life drawing class! If you haven't noticed yet I do this weekly and focus on a different part of the body every time

also the first four images are referenced off of my hand, hand reveal

[penanatomy-studies]

I made my own OC meme! :] The goal is to encourage people to think about their characters' word choices in written/spoken dialogue. Blank under the cut!

(the second one is transparent) Feel free to modify and redistribute any way you'd like, just be honest about the source if asked lol

[penanatomy-studies]

Various people sketched in different poses

[penanatomy-studies]

Can I request some dancer's poses with fat models?

I have a few! 💃🏻

[penanatomy-studies]

I made an art/anatomy tutorial about birds! I hope people will find it helpful!

[penanatomy-studies]

William Orpen (Irish, 1878-1931), Standing Male Nude. Pencil drawing on paper, 59.5 x 40.5 cm.

[penanatomy-studies]

its official: tumblr is selling our data to Midjourney

we'd been hearing rumors about this for a bit but now its open and out there. some details from this article

it goes without saying, but if @staff goes through with this its going to be an utter shitshow and im all but certain the website will not survive it.

[penanatomy-studies]

Penanatomy-studies has a placeholder account on cohost. Nothing has been posted yet.

So uh,

I decided to backup all my Tumblr blogs here as a precaution due to the current situation (Tumblr CEO pls shut the fuck up you are making things so so much worse). I don't think Tumblr is going to blow up overnight, but everything concerning the entire situation and, then some, is making me worried about this site's future.

Anyway, you can find my art here on my updated portfolio or through the links listed on its landing page:

I'm on cohost, and a placeholder account on Mastodon and Furaffinity. The last two don't have anything on them yet, tho.

[penanatomy-studies]

Chris Kelly, 2020

[penanatomy-studies]

A new behind the scenes video was just released, narrated by our VFX Supervisor Michael Lasker! It shows off a lot of fun WIP versions of shots, as well as some of the tools used to create all the different looks of the movie.

[penanatomy-studies]

Relax

[penanatomy-studies]

i made a guide for ppl

[penanatomy-studies]

*Points at Pinned*

I'm happy that this blog is getting attention, but please don't follow if you are a minor!

I'm fine with reblogs and likes on posts on this blog (heh), but some posts may have suggestive artistic nudity. Please be careful if you're looking for anatomy references on this blog. Thanks!

[penanatomy-studies]

draw more fat characters ok. i love you

[penanatomy-studies]

tocarte 

[penanatomy-studies]

https://www.instagram.com/p/CFP5jckBsRs