Carrie Arnold at Noema:
However, a growing collection of new experiments is challenging the old consensus. Far from being six-legged automatons, they can experience feelings akin to pain and suffering, joy and desire. When Chittka gave bumblebees an extra jolt of sucrose, their favorite food, the bees buzzed with delight. Agitated, anxious honeybees, on the other hand, responded with pessimism when researchers shook them to simulate a predatory attack. Other researchers found that they “scream” when under threat. Ants display rudimentary counting abilities, can understand the concept of zero and make tools. Fruit flies learn from their peers. Cockroaches have complex social lives. Fruit flies drown themselves in booze when deprived of mating opportunities. Some earwigs and other insects play dead when threatened by a predator.
In other words, insects have thoughts and feelings. The next question for philosophers and scientists alike is: Do they have consciousness?
more here.