respiratory horn

respiratory horn
(ARTHROPODA: Insecta)
1. In Diptera, paired prothoracic protuberances on the aquatic pupae of most Culicidae and Ceratopogonidae; respiratory trumpet.
2. A sharply pointed post-abdominal siphon in some aquatic insect pupae that are thrust into the aerenchyma of aquatic plants.

Online Dictionary of Invertebrate Zoology. . 2005.

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