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This paper studies a different temperature ( 18 ° C , 22 ° C , 25 ° C , 28 ° C , 30 ° C ) and host conditions , the Fuso Phenacoccus biological characteristics , morphological characteristics , extraction of crude fat , life table situation , also studied the effects of four pesticides on the prevention and control of the the Fuso Phenacoccus instars . The different instars at 18 ℃ ~ 30 ℃, developmental duration is shortened with increasing temperature ; egg to adult survival rate increased with increasing temperature . 25 ~ 28 ℃ the Fuso Phenacoccus growth and development , reproduction of the most suitable temperature . A field survey found that the number of mid - August , then declined from June to November , the Fuso Phenacoccus population change is large, the number of mid - July reached a peak ; peaked again in mid - September . The relationships between the fecundity Fuso Phenacoccus days ; then 3 instar nymphs 60 , third instar nymphs molt into adult anatomy adult , Statistics adults fecundity . The results indicate that the increased fecundity of the adult with the increase in the number of days and increases to a peak and then decreases with the reduction of the number of days . Chemical control test results : to cypermethrin with 4.5% 1500 and 2.5 % cypermethrin 1000 times spraying , two kinds of agents of the Fuso Phenacoccus nymphs and adults have an obvious effect , 80% dichlorvos 800 times ; best adult control effect , and the cost is lower, more desirable. Crude lipid extraction the the Fuso Phenacoccus in the different host plants , the results show that different the Fuso Phenacoccus fat content in different host conditions at the the fat content 68F2 Xiangzamian up to 12.4% , the fat on the cocklebur content of 5.9% , the fat content of the Hibiscus spend at least 4.9% . The life table indoor hibiscus Phenacoccus stage of its population mortality peaked 1,2 age class , the emergence of the peak and the biological characteristics of its population mortality related to temperature .
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