What follows is from From encyclopedia brittanica online.
I was surprised there were so many different kinds and that they each only pollinate a specific fig.
FIG WASP
Agaonidae
also called fig insect , any of about 900 species of tiny wasps responsible for pollinating the world’s 900 species of figs (see Ficus). Each species of wasp pollinates only one species of fig, and each fig species has its own wasp species to pollinate it. This extraordinary diversity of coevolution between figs and wasps has become so profound that neither organism can exist without the other.
The fig wasp’s life cycle is typified in the caprifig (Ficus carica sylvestris), a wild, inedible fig. Wasps mature from eggs deposited inside the flowering structure of the fig, called the syconium, which looks very much like a fruit. Inside the completely enclosed syconium are the individual flowers themselves. When a wasp egg is deposited in one of the flowers, that flower develops a gall-like structure instead of a seed. The blind, wingless male wasps emerge from the galls and search out one or more galls containing a female, and upon finding one, he chews a hole in the gall and mates with her before she has even hatched. In many cases, the male then digs an escape tunnel for the female. The male then dies, having spent its entire life within the fig. The female emerges later from her gall and proceeds toward the escape tunnel or the eye of the fig (the part opposite the stem end), because she must deposit her eggs in a second fig. In departing, she passes by many male flowers and emerges covered with pollen. During her brief adult life (as short as two days), she flies into the forest to fertilize another fig and deposit another generation of fig wasps.
View larger image!The life cycle of the fig wasp (family Agaonidae).Encyclopædia Britannica, Inc.
The female fig wasp’s role in pollinating certain edible figs, especially Smyrna figs (F. carica), is critical to the fig grower, as most economically valuable figs require fertilization to ripen. Though she cannot lay her eggs within the edible fig (she must lay them at the base of the pistil, and the pistils of cultivated figs are longer than her ovipositor), she carries with her the pollen that fertilizes the figs and causes them to ripen. Unfertilized females perform the same role in pollination.
Although most figs are tropical, two species of fig wasps are found in North America. The female fig wasp, Blastophaga psenes, about 1.5 mm (0.06 inch) in length, was introduced into the western United States to pollinate the Smyrna fig, a commercially important variety. B. nota, originally found in the Philippines, pollinates the flowers of F. nota.
The fig wasp family, Agaonidae, belongs to a superfamily of wasps called Chalcidoidea (see chalcid) that includes thousands of species of parasitic wasps.
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