These beetles, characterized by their skipping movements and enlarged hind femora, also attack the hop (Haltica concinna), the vine in America (Graptodera chalybea, Illig.), and numerous other species of plants, being specially harmful to seedlings and young growth.
There are also large breweries, and the Hop Exchange is a centre of the hop trade.
- The Hop Aphis (Phorodon After the Coccidae the next most important insects male; C, ovigerous wingless female; economically are r the plant lice or A phididae.
The first scientific expedition to reach the Orange was that under Captain Henry Hop sent by Governor Tulbagh in 1761, partly to investigate the reports concerning a semi-civilized yellow race living north of the great river.
Hop crossed the Orange in September 1761, but shortly afterwards returned.