Brachycaudus rumexicolens

Brachycaudus rumexicolens, the short tailed sorrel aphid, is an aphid in the genus Brachycaudus that feeds on Polygonaceae, and ranges almost completely worldwide minus Antarctica.

Host plants

this aphid is found primarily on Rumex species in the United States, but can also be found on many other plants in the Polygonaceae.

Recent introductions

This species was introduced to Australia in 1998 where it has been used to wipe out a nonnative dock species.

Color forms

This species has two color forms, the North American color form is yellowish green, while the other ones worldwide are brown in coloration.

Appearance

The other defining features are that it is the size of a pinhead, has small, multi segmented, antenna, and short siphuncui.