Fleas themselves can hibernate for three months waiting for another warm blooded mammal to come strolling through. That’s why even abandoned buildings can have huge flea infestations; every little mouse or raccoon to get too close refreshes the population.
In a moist environment like soil, they disappear quite fast, but chitin is still a hard material, so it hangs around a little like vertebrate bone.
Almost any corpse will hang around for ages when it’s dry, though. In my terrariums the remains of dead feeder crickets rapidly turn to mush and are eaten up by springtails and such!
pretty much everything about their structure and mode of operation, really.
At their size, it’s like a feather flapping a couple other feathers to get off the ground, kind of.
If they were scaled up, it’d be like you trying to fly with two giant window panes in your hands.
Easily! Millipedes are low maintenance and like a tank with a lot of soil, dead leaves and rotten wood. They need a source of water or a humid tank misted every now and then, and they’ll eat most fresh fruits and vegetables.
Honeybee stings do get torn out in the flesh of larger animals. It’s usually obvious; you’ll see the bee with some innards hanging out, dragging itself around. It’s always good to quickly end something that’s alive and mutilated.
It could, really! They keep very dry conditions underground for storing food, so it’s unlikely to go bad if it’d also last a long time in a cupboard.
You could also try seeds and nuts!
When arthropods get way too cold, they’ll usually find something like a plant or a tree or a rock to hide inside or under, but they’ll still get cold enough to stop moving until they warm up again. A lot of them can go into a static state and be perfectly fine when the ice passes!
They’re referred to as “pseudopupils” and are a trick of the light! They’re basically shadows caused by how light enters and leaves the compound eyes.
It would probably be harder for bedbugs to establish themselves where there are already a great deal of cockroaches, especially if it’s just a couple adult bedbugs showing up at first. They could all get eaten before they mate and lay eggs.
Bedbugs reproduce fast, though, so it wouldn’t be reliable. Under natural conditions they would probably reach an equilibrium. Of course, take the roaches away and the bedbugs would be that much worse.
Lack of insectivorous mammals is considered an equally important factor. It’s likely arthropods could have evolved more efficient respiratory mechanisms over time, but the biggest problem for them was really all the mammals who evolved to be so fast and active all the time. Big arthropods just weren’t flexible or reflexive enough to deal with them, especially when molting.