The three known species of the genus Tethina Haliday (T. albula (Loew), T. insulans Curran, and T. spinulosa Coe) from the Galápagos Islands are reviewed with an emphasis on structures of the male terminalia, which are illustrated (no males are known for T. insulans Curran). Tethina albula and T. spinulosa are reported for the first time from the Islands.
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beach flies
Canacidae (Tethininae)
Galápagos Islands
Tethina Haliday