Moegistorhynchus longirostris is a keystone species of fly that lives on the west coast of South Africa.

[1] M. longirostris has a very long proboscis that is believed to be the product of an evolutionary arms race between pollinating insects and long-tubed flowers.

[1] The species pollinates, partly or exclusively, at least 20 species of Iridaceae (such as Lapeirousia anceps),[2] Geraniaceae, and Orchidaceae.

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