How can I tell if a bug is edible?

Most insects are edible. Unfortunately, there isn't a dead giveaway to tell if a bug is edible unless you know what you're doing. However, there are some general guidelines you can use to help you decide. One rule of thumb that survival experts endorse is to steer clear of brightly colored insects. Like on amphibians, bright colors are usually an insect's way of saying, "Avoid me, please." You should heed their advice. Insects that are extremely pungent are also good to keep off your plate. Some wilderness experts will caution against hairy critters as well as bugs that bite or sting. Disease carriers like flies, ticks and mosquitoes are also on the no list.

But for every rule, there are exceptions. The tomato worm is bright green and perfectly safe to eat. Caterpillars are edible for the most part, but maybe you should stay away from the hairy, colorful ones. Tarantulas are hairy too, but are roasted and eaten in some countries. Black ants are edible, but their fiery cousins aren't. Stinging bugs like bees and wasps are edible and known for being quite tasty. The same can be said for scorpions. People eat venomous snakes, so why not? There are even varieties of flies and mosquitoes that you can eat.

All in all, there are 15 orders of edible insects:

The trick to eating any insect is to cook it. Even if a bug has harmful toxins or venom, a good boiling will usually negate the effect. Insects with hard shells like beetles can contain parasites, but if cooked are safe to eat. Even if you're in a survival situation, you should be able to get a fire going. This means you can boil, roast or smoke the insects you eat. Aside from making them safe to ingest, cooking them also improves the taste. Ants, for example, have a distinct vinegar taste until they're boiled. Another way to improve your dining experience is by removing the wings and legs from your meal. They don't contain much nutritional value anyway. You can also remove the head.

Many times the insects themselves are edible, but what they've been eating isn't. It takes a little while for insects to digest, so if they recently ate some leafy greens that were sprayed with pesticide, those chemicals are now inside their body. Locusts that have been doused with insecticide often have saliva at the corners of their mouths. Cook these insects or purge them by feeding them fresh greens -- 24 hours should do it. You should also stick to live insects because you can never be sure what killed the dead ones. You can take care of the killing part yourself by cooking or freezing them.

So if you're in a survival situation, play it safe. There are plenty of worms, grubs, termites, crickets and beetles in any wilderness area. Stick with these and you'll be fine.