siphonet

Century Dictionary and Cyclopedia

1. n. In entomology, one of the two tubes on the upper surface of the abdomen of an aphis from which honeydew exudes; a honey-tube. Also called siphunculus.

Wiktionary

1. n. zoology One of the two dorsal tubular organs on the rear part of the abdomen of aphids, which secrete honeydew.

GNU Webster's 1913

1. n. (Zoöl.) One of the two dorsal tubular organs on the hinder part of the abdomen of aphids. They give exit to the honeydew. See Illust. under aphis.