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I would say Lipsothrix too, for is has the unique cup-shaped thoracic spiracles. Also it is one of the few wood-inabiting Limoniidae. larvae are also very peculiar: thin larvae with a swollen thorax and with abdominal segments 2-7 with dorsal and ventral creeping welts. These creeping welts can also be seen in the pupa. They probably need it for locomotion inside the dead wood or under de bark of submerged wood.