Widespread distribution. Central and North America, Oceania. On crops in the potato family, and weeds. An important although only occasional pest.
Eggs laid in double row of slits in stems; nymphs reddish-brown with black spines; adults with high ridge and triangular extensions. Suck sap, causing wilts, and death of seedlings and young plants. They make honeydew that attracts ants.
Cultural control: handpick hoppers when first seen; weed; remove ants (kill nests with hot water).
Chemical control: PDPs: derris, pyrethrum, or chilli; try white or horticultural oils or soap; use synthetic pyrethroids to kill ants.
AUTHOR Grahame Jackson Information from King ABS, Saunders JL (1984) The invertebrate pests of annual food crops in Central America. Overseas Development Administration, London. Photos 1&2 Sione Foliaki, former Deputy Director and Head of Agricultural Research and Information Division, MAFFF, Tonga.
Produced with support from the Australian Centre for International Agricultural Research under project PC/2010/090: Strengthening integrated crop management research in the Pacific Islands in support of sustainable intensification of high-value crop production, implemented by the University of Queensland and the Secretariat of the Pacific Community.