Stable fly
somewhere in Eurasia. Stable flies superficially resemble house flies, but are lighter in colour and have biting mouth parts. Both male and female flies [...] mammalian blood (particularly cattle and horses, humans, and pigs to a lesser extent). Although they are extremely common and exist worldwide, it is believed [...] feed on animal blood, and females must be engorged with blood to lay eggs. They are highly mobile insects and can travel up to 20 km in search of new hosts