Simulium is a genus of black flies, which may transmit diseases such as onchocerciasis.

An ala or hala is a female mythological creature recorded in the folklore of Bulgarians, Macedonians, and Serbs. Ale are considered demons of bad weather whose main purpose is to lead hail-producing thunderclouds in the direction of fields, vineyards, or orchards to destroy the crops, or loot and take them away. Extremely voracious, ale particularly like to eat children, though their gluttony is not limited to Earth. It is believed they sometimes try devouring the Sun or the Moon, causing eclipses, and that it would mean the end of the world should they succeed. When people encounter an ala, their mental or physical health, or even life, are in peril; however, her favor can be gained by approaching her with respect and trust. Being in a good relationship with an ala is very beneficial, because she makes her favorites rich and saves their lives in times of trouble.