This reddit comment on #spiders #ants and #bees is quite interesting
https://www.reddit.com/r/NatureIsFuckingLit/comments/1jwpxxs/comment/mmm3m7i/
Copying it here if you don't want to click, links with reference at the end might be broken.
-- /u/lamplorde --
So I'm gonna bore people because I'm a bug nerd but:
There is a lot more going on in the insect world than we give credit to, because we simply dont have the technology to accurately study them at that size. Its funny to think about when we have microscopes that let us see the fundamental building blocks of the universe, but when it comes to insect physiology and how their brains work we know very little.
For instance, studies have lead to the theory that Bees most likely do have emotions. It was a simple study, done using Blue Flowers and the fact that Bees still kept a "heightened state" around the color blue when they started to associate it with food. But it doesnt stop there: there were also studies done on Ant colonies regarding their sleep schedules and we came to find that Carpenter Fire Ant Queens sleep for about the same amount of time as us humans, just in lots of little naps. But the interesting part of that one is not just how much they sleep but how. Scientists observed the Ants antenna twitching very similarly to our eyes during REM sleep, leading to the theory that Ants might dream. One last fun tidbit: Jumping Spiders are opportunistic pack hunters. They spend most of their life solitary, but are known to hunt together in mated pairs, becoming extremely effective together with the smaller Male often distracting the prey while the Female pounces. The odd part comes from the fact that they appear to communicate before hunts via a "language" done through foot stamping to plan. Not only that but Jumping Spiders are one of the few insects that display an understanding of Object Permanence, ranking them at least a little above an infant (not that that is saying much).
At the end of the day, we have so much going on below our feet. Entire little lives that we know so little about. Its an interesting and vibrant world.
EDIT By popular demand, things I should have included to begin with (the all important sources):
Bees and Emotion
Ants and Dreaming (My apologies, it was Fire Ants, not Carpenters
Jumping Spiders and Object Permanence
Which, when trying to find my old sources funnily enough brought me to a new (to me) study that Jumping Spiders might also dream