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So, I am working on a species called the Vosians, who hail from the planet Vos. They are a species of eusocial insectoids, much like Earth ants.

Biology

The Vosians are about 3 feet tall, or 0.9 meters. The average weight for an adult is 90 lbs, though the queen can be 7 feet tall, and weight 600 lbs. The average lifespan for a Vosian is 40 years, and for the queen it is 130. Vosians are divided into 5 castes, which are all necessary for the species to work.

  • Workers

  • Overseers

  • Protectors

  • Princes/princesses

  • Queen

They communicate by dance, and live in many great hives across the planet Vos. The Queen is always surrounded by an entourage of 6,000 protectors at a time, and lays about 3 million eggs a day. Vos, the planet they inhabit, is a dryer world, with no major oceans only seas. The Vosians are often seen by humans as a great pest in the galaxy, as they reproduce quickly. They have not invented their own version of FTL travel yet, and rely on investors to do any colonization. It is a great planet for outsourcing of labor, as Vos’s Queen only wants a payment of 5 million credits a year.

Sorry to get so sidetracked back there, but back to my question. So, as you guys know, most insects are dumber than bricks and are evolutionary dead ends that will never progress. Vosians are a major plot element, and so can I ask: What natural factors would allow an insect species to become intelligent?

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    $\begingroup$ You might want to reconsider those 3 million eggs/day, given that your "insects" weigh 40 kg apiece. And on Earth eusocial insects are, individually, rather stupid simply because they are so small -- an ant must do with about 250,000 neurons; but even on Earth the eusocial colony is not stupid at all. $\endgroup$ – AlexP Jun 25 '18 at 1:05
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Calling insects an evolutionary dead end. How dare you, sir. They just stopped getting changing cause they got it perfect way back in 70,000,000 B.C.E.

Okay, that's enough jokes. Personally, I like to think that human intelligence is a combination of tool use, a dependency on complex communication, and a need to alter the environment around them in order to survive. There are a bunch of factors involved with each of those list items, but it's good enough to use as a general checklist.

Common ants already fulfill all the requirements I mentioned, just not as extremely as you need. The only anatomical diffrence Volsians will need from ants is instead of manipulating with mandibles, the Volsians will likely have dexterous hands, tentacles, or other part that allows for the creation and use of fairly specialized tools.

The great news about this is that the Volsians have a good reason to evolve great manipulating appendages: building hives that can house a 43 billion family members (that's the number of births in a single non-queen Volsian lifetime. You might want to adjust that, cause that's simply too many mouths to feed for any level of civilization). Building such hives/towns would demand the Volsians learn to use tools, and the pressures of feeding a family would probably lead to agriculture and animal domestication as well.

All of the above is really dang complicated, so much so that it would likely demand that individual Volsians need to be actually taught to be functioning citizens/family members. After all, building a pyramid and growing a crop and organizing a city is a lot of information to be taken care of by in-born instincts. The logical solution is to have Volsians born as blank slates to they can be as taught to fulfill specific roles as the need arises. This stupid-baby-smart-adult strategy is basically what humans use, FYI.

In a nutshell, you have a bunch of mega-insects that need a lot more resources than normal insects (since their huge and numerous), so they evolved intelligence in order to get all the resources required. This should be enough to explain why they are smart, I should hope.

The only flaw with this I can see with your set up (other than the births-per-day) is Volsians communicating via dance. While it works for actual ants (with the aid of pheromones), having a complicated language based on dance would be really energy inefficient. For example, imagine if I had to dance the this entire answer post to you, conveying each word with some form of dance move. I'd probably burn a pilates class worth of calories by now.

Even if the dance-speak is as easy as sign language, the Volsians would still need a light source and a direct line of sight to say anything at all. Those are huge downsides for a developing civilization. Using sounds to speak would probably make a lot more sense.

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  • $\begingroup$ Well, they could use some high pitched frequency along with it $\endgroup$ – Justin Jun 25 '18 at 2:54
  • $\begingroup$ As for the birtd, I will most likely bring that down. To much for any civilization to handle $\endgroup$ – Justin Jun 25 '18 at 2:55
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    $\begingroup$ +1. However: "having a complicated language based on dance would be really energy inefficient." Sign languages can be seen as dances involving hand gestures and facial expressions, where each move conveys a piece of a message. Those insects would talk by sign languages once they evolved into rational beings. $\endgroup$ – Renan Jun 25 '18 at 15:51
  • $\begingroup$ @Renan I addressed that in the last paragraph. Honestly, thinking like a carnivorous predator, a species that cannot possibly call for reinforcements without line of sight or at night would be a easy meal, regardless of their intelligence. Easier than the dodo birds, really. $\endgroup$ – Pinion Minion Jun 25 '18 at 16:15
  • $\begingroup$ @PinionMinion sorry, I had skimmed over your answer. Now I've reread it and I fully agree. $\endgroup$ – Renan Jun 25 '18 at 16:58
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Most evolutionary pressures are easily solved via physical rather than mental improvements. Even situations in which a smarter animal would do better are usually solvable through other, simpler solutions, making the possibility that those solutions will arise higher; fewer mutations need to happen.

Thus while incredibly intelligent combat tactics are very useful, it's far more common to see incredibly strong animals than incredibly smart ones. A human can outsmart a gorilla, but without strong tools that take a lot of time to learn how to make, not to mention build, the gorilla can tear the human to shreds no matter how much smarter the person is. The gorilla is faster, stronger, and more terrifying.

Additionally, it is also a choice between the two; brains like ours take enormous amounts of energy to run, and we only have so much oxygen with which to run our bodies.

That said, there are some situations in which there is no substitute for intelligence. Complex social interaction is one of them. Our gorilla - let's call them Yog - might be able to kill everyone, but if their weaker sibling Mog is socially smarter than them, Mog is going to be the one who gets better status. That status can translate to better protection from other gorillas, better food, and more mates. Thus Mog is more genetically successful than Yog.

Of course, if Mog is too weak then Yog might gain dominance anyways. But those sorts of evolutionary pressures make it possible to end up with a species of Mogs.

Another evolutionary pressure that can lead to intelligence is the need to coordinate. Most insects, even social ones, do work on a solitary basis without needing to coordinate with other insects to complete tasks or accomplish goals. Even when they are working together on a single task, they are usually on an individual basis doing the exact same thing; it's just that a lot of them are doing it at once. Humans coordinate. In order to complete even tasks that we view as incredibly simple for the group, it is necessary or efficient for each individual involved to be doing something completely different from the others while being generally aware of the task as a whole. Consider cooking in a restaurant; the head chef directs each individual and may be cooking the end product, the prep cook cuts the pieces, a sous chef may be creating the necessary sauces, and yet another worker may be providing the correct dishes. They are all additionally aware of the entire recipe while they complete their task, and are generally aware of how the process is advancing.

So if you want your Vosians to be sapient, a good way to make it plausible is to ensure that:

  1. There is plenty of oxygen or other energy-releasing gases or chemicals on their planet (this has the bonus of making their relatively large size more plausible),

  2. Each individual must deal with complex social situations, and

  3. The Vosians must coordinate complex tasks in which each individual has a different function in order to survive.

I would also like to add that in all earthbound social insects, the queen is not the leader; she is merely the reproductive organ of the colony, treated well for her necessity, but completely cut off from the functions that run the rest of the colony. Your Vosian queens are unusual in that sense. So it may be worth thinking about what makes them different.

Perhaps they are the only source of an important chemical that enables Vosians to recognize that they are from the same hive, and they withhold that chemical from those that do not do what they say. Perhaps they hold themselves hostage, threatening to hurt themselves and thus grind the colony to a reproductive and productive halt if the colony does not act in their interests. Perhaps they are simply the smartest Vosians and so queen-led societies tend to perform better. Or something else. Regardless, best of luck with your insectoid creatures. :)

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  • $\begingroup$ You haven’t been on the site in a few months. Welcome back $\endgroup$ – Justin Jun 25 '18 at 3:17
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    $\begingroup$ No worries, your a great addition to this website 👍 $\endgroup$ – Justin Jun 25 '18 at 3:33
  • $\begingroup$ Great answer and good addition to Pinion Minion's! :) $\endgroup$ – ArtificialSoul Jun 25 '18 at 7:59
  • $\begingroup$ With Justin's Volsians, the queens have a much longer lifespan than any of the other workers. That alone would increase their status by having more life experience than anyone else in the hive. This is why elders used to be revered in tribal societies. You could totally justify the queens having high status due to this and beneficial social structures and traditions (queens could totally make up traditions that suit their needs. They are the moms after all, and that's what moms do). $\endgroup$ – Pinion Minion Jun 25 '18 at 16:04
  • $\begingroup$ @PinionMinion If most of that lifespan is spent doing nothing more than birthing other Vosians, than the greater experience amounts to nothing due to its extremely monotonous nature and the fact that it's entirely unique to the queens' situation. I agree that the queen's longer lifespan sets the stage for leadership, but I think it may take a bit more than that to cement their position. $\endgroup$ – Classified Angel Jul 1 '18 at 3:15
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Their development would have to be artificial as there are several problems with getting insects that big such as size limits on exoskeletons and having to develop lungs.

Now if someone wanted a drone species of self populating workers, a hive mentality is a great start. You'd engineer basic intelligence so they can understand instruction but not enough to rebel.

To overcome the size limitations of exoskeletons, new members would have to hatch virtually full size so they finish growing before the exoskeleton hardens. Now either the eggs have to much bigger or the eggs hatch to larvae which the workers feed until they becomes chrysalises.

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  • $\begingroup$ I think this skirts the edge of what the poster is asking for, but I do like the idea of using sapient insects as von Neumann probes. Reminds me of the Orks of Warhammer 40k lore. I assume a "glitch" occurred that got the Volsian species off course so they turned from selfless explorers into the intergalactic pests we all want to know and love. $\endgroup$ – Pinion Minion Jun 25 '18 at 2:46
  • $\begingroup$ Not so much a von Neumann probe but more of a domesticated work animal. If the original species that created the race died out, the "domesticated" species could easily becomes a pest since they were no longer managed kinda like feral horses or goats. $\endgroup$ – Thorne Jun 25 '18 at 3:43
  • $\begingroup$ Oh, that makes total sense. Sounds kinda funny, actually. Land on a new planet: wild Volsians. Other new planet: wild Volsians. Next planet: hey its wild Volsians. "Why are you everywhere!" "Cause we got abondoned everywhere and can't leave, jerk!" Actually, I would love to see what these guys culture and belief systems would be like with this history. Would make for a really interesting alien perspective. $\endgroup$ – Pinion Minion Jun 25 '18 at 16:23

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