Exo-arthropoda is a classification given to all arthropod-like organisms found in the Perseus arm capable of living in space. This classification and also the subclassification are based more on appearances than actual biological relations, as the creatures themselves show as little similarity between themselves at a genetic level as they show to us, leading us to conclude that most of them evolved separately or diverged several million years ago.
They show several similarities, mostly their armoured bodies composed of metallo-proteins relatively similar in structure to chitin, this trait however is considered to be an example of convergent evolution since the metallic components of shells are able to absorb radiation diminishing the risk of damage to their genetic makeup. Another, more concerning, similarity is that every single exo-arthropod found possesses some kind of long range bioweaponry, sometimes as simple as spine or acid launchers or suicidal symbiotic organisms, but they are also sometimes more complex as biological lasers, large ferrous spines launchers similar to railguns and even plasma weapons.
It is uncertain how or why these traits evolved since competition between them is not strong enough to justify all the energy spent on their development. This has lead several TSC scientists to believe that most, if not all of these creatures evolved from some ancient race's bioweapon.
Magnabracchium Carcinus is probably the most common member of the magnabraquia, it's usually found consuming metals or water from asteroids or comets, respectively. It's relatively harmless unless provoked and are also capable of long periods of hibernation which they mostly use for transport between celestial objects inside their solar system, though they've been also found hibernating in deep space making the jump from the Crab nebula to the Pleiades, which alarmed the TSC enough to start the fortification of the outer rim of the Orion arm.
Magnabracchium Falx is quite more rare than it's relatively closely related cousin Magnabracchium Carcinus, it's also quite more dangerous and aggressive. Instead of using it's huge near indestructible claws (a trait common to all magnabraquia) as a method of defence, it uses them as it's main method of attack, being capable of tearing apart even dreadnoughts, it also sports long range high speed ferrous spines launchers.
Magnabracchium Coleoptera, unlike the previous species this one seems to not be related at a genetic level. This species though capable of space flight, it is commonly found in low orbit near gas giants where it establishes huge colonies, living an aquatic-like life between the gas layers. As a mechanism of self defence it uses symbiotic larvae able to corrode part of the hull/carapace of the target vessel and then explode violently.
Legiocimex Vespa, also known as wasps, are vicious swarming creatures, they're commonly found living in biological hives in orbit around gas giants, ferrying materials from their outer layers or metals and hydrocarbons from nearby moons or asteroids. The hive, also acts as their queen, it reproduces asexually, which is not uncommon to members of the Legiocimex. To do this the hive/queen produces a droppod-like cocoon with a developing drone wasp inside which is then launched to a nearby star system. As there's no genetic difference between the drones and the hive, the infertile drone after birth can undergo a lengthy process to transform in a new hive, which also happens to any drone if it's separated from its mother hive for a long enough period of time.
Due to this method of expansion it's not uncommon to find several inactive cocoons laying in a similar way to mines in the systems nearby to a main hive, these cocoons are completely harmless and immobile, unless disturbed which causes the latent drone to activate and birth as soon as it is attacked. Recent findings indicate that this might also constitute an example of a self defence mechanism since several latent eggs have been found together giving birth to large swarms quickly in the presence of a rival hive or another vessel.
Well I'll post more ships tomorrow, not more bioships this time though. The Legiocimex Vespa has a small bug, which I haven't been able to fix, as it keeps activating it's "birth animation" (it's larger than the egg so it has to be extend it's wings and rotate its legs) yet this is barely noticeable since it happens for 1 frame each 9000 frames, and considering how expendable it was made it shouldn't last that long. If you're curious I used this tutorial to make it, and the cocoon sprite contains a thruster which grants it movement once the cocoon is destroyed.
Also I noticed that the Magnabracchium Falx is lacking the fake aegis (purplish glow), and probably the aegis module for its claws, which means I used an older WIP for the screenshot. If you want a rationalization of why a creature would have aegis shields, well I could say it's psychic powers, however I'll go with a flexible crystalline structure that hardens on impact or receiving heat
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