DistributionThey are distributed in the Mediterranean region and south-west Asia, Forda formicaria forms half-moon-shaped galls on its primary host Pistacia species (pistachio). Alates leave the galls in September to November, and move to the roots of numerous grasses and cereals where they found colonies. In many other parts of the world (northern Europe, parts of Asia and North America), host alternation (and sexual reproduction) have been lost, and they live on the roots of grasses all year round. Forda formicaria are always attended by ants, and often live within ants' nests.
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