| The grape leafhopper Batracomorphus pandarus Knight was a new record species in China. It belongs to Hemiptera Cicadellidae Iassinae Iassini Batracomorphus. It was first observed in a vineyard near Manasi, Xinjiang Uyghur Autonomous Region in 2009. It diffused to Shihezi city and 152 farm of eighth agricultural division in 2010.We surveyed the leafhopper in the vineyard of 143 farm, 145 farm and 147 farm in 2011. The insect rapidly spread to surrounding areas. Little is known about the life cycle, overwintering, biology, host range, biological characteristics, and population fluctuations of B. pandarus. We know of no reports about B. pandarus in other countries. So, we made a study of biology,ecology,and indoor insecticides test.The results are as follows:1.The B. pandarus mainly distributed in the north of Urumchi, including the twelfth agriculturalarea, Changji, Manas, Shihezi region. Grape is the only food it eat. It sucks sap from stem ends and leaf axils of grapes. High planting density, extensive management, low growth, the partial strongh, can not be timely pruning vines has big amounts.2.The B. pandarus had three generations each year in Manasi. The insect overwintering in the grape stems as egg. The overwinter generation occured more neatly, but it had generation overlap between the first generation and the second generation. It is the period of overwinter eggs hatchedand nymph developed from late-April to mid-May. The adults of overter generation occurred from late-May to middle-June.The first generation eggs happened from mid-June to mid-July. The first generation nymphs occurred from late-June to late-July. The first generation adults occurred from mid-July to late-August. The second generation eggs occurred from late-July to late-August. The second generation nymphs occurred from early-August to late-September. The second generation adults occurred from early-September to early-October.The period of overwinter eggs lasted from mid-September to late-April of next year.3.The B. pandarus had a strong tropism to yellow, had some tropism to light, but it no tropism to sweet and sour liquid. It has the tropism to fruit and fresh position. The vertical activity height of male adult was higher than female. The activity position of females were mainly in the lower place of vineyard.4.Nymph of B. pandarus had 5 instars, and it lasted 13-25 days;The life-span of adults lasted 3-9 days. The activity period of adults mainly in 21 points to 23 points of night, and 6 points to 8 points of morning.5.The toxicity of 70% imidacloprid WG, 30% acetamiprid SL and 5% avermectin EC were tested against B. Pandarus nymph indoor. The results indicated that 70% imidacloprid WG was more toxicity than the other two pesticides, that in turn were 30% acetamiprid SL, 5% avermectin EC. The LC50 of the pesticides at B. pandarus nymph were respectively 3.28×10-3μg/ml、5.46×10-3μg/ml、8.07×10-3μg/ml.6.The R value of B. Pandarus were 1.76, and it belonged to moderate risk pest. The long distance disseminate mainly rely on seedling which bring by people. We should strong the insecticidal measures in the happed place and detection in the place of on B. Pandarus.7. We setted up a system for prevention and control of B. Pandarus. |
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