. Cooperative economic insect report. Beneficial insects; Insect pests. - 1039 - INSECTS NOT KNOWN TO OCCUR IN THE CONTINENTAL UNITED STATES SUGARCANE LEAFHOPPER (Perkinsiella saccharicida Kirkaldy) Economic Importance: Damage by this delphacid was so extensive shortly after its introduction into Hawaii in 1900, that sugarcane production was reduced by 70,516 tons during 1903-1904. Feeding by nymphs and adults results in removal of plant juices and oviposition causes mechanical damage. This is frequently followed by invasion of the tissue by the red-rot fungus (Glomerella tucumanensis). The fu
. Cooperative economic insect report. Beneficial insects; Insect pests. - 1039 - INSECTS NOT KNOWN TO OCCUR IN THE CONTINENTAL UNITED STATES SUGARCANE LEAFHOPPER (Perkinsiella saccharicida Kirkaldy) Economic Importance: Damage by this delphacid was so extensive shortly after its introduction into Hawaii in 1900, that sugarcane production was reduced by 70,516 tons during 1903-1904. Feeding by nymphs and adults results in removal of plant juices and oviposition causes mechanical damage. This is frequently followed by invasion of the tissue by the red-rot fungus (Glomerella tucumanensis). The fungus and fermentation of injured tissues cause a reddish discoloration at the oviposition site; infested parts of the cane may become reddish or closely red- spotted. Severe attack is shown in the drying of leaves, tapered and contracted stem joints, damaged crown, and sometimes destruction of the plant. Heavy de- posits of honeydew cause favorable conditions for growth of molds and fungi on host plants and retard photosynthesis. P. saccharicida is a vector of Fiji disease of sugarcane. Symptoms include s'tunting, leaf distortion, and formation of pale green and yellow galls on lower leaf surfaces. Diseased plants do not recover and where controls are not used, 100 percent loss results. Natural enemies are numerous and may control leafhopper populations without the aid of chemicals. Distribution: Australia (Queensland, New South Wales), China (mainland, southern part), Comoro Islands, Ecuador, Indonesia (Java), Malagasy Republic, Malaysia, Mauritius, Republic of South Africa (Natal), Reunion, Taiwan, and the United States (noncontinental--Hawaii). First found in South America in Ecuador in 1965. Hosts: Sugarcane, corn, sedges, and grasses, including "Hilo Grass" (Paspalum conjugatum).. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not per
Size: 1332px × 1877px
Photo credit: © The Book Worm / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1900, booksubjectbeneficialinsects, booksubjectinsect
