Three new species of Blasticotomidae from China are described in the paper: Runaria shaanxinica Wei sp. nov., Runaria hunannica Wei sp. nov. and Runaria punctata Wei sp. nov. A new generic synonym is propo...Three new species of Blasticotomidae from China are described in the paper: Runaria shaanxinica Wei sp. nov., Runaria hunannica Wei sp. nov. and Runaria punctata Wei sp. nov. A new generic synonym is proposed; Runaria Malaise 1931 = Bohea Maa 1944 syn. nov. Keys are given to known genera of the family Blasticotomidae and known species of the genera Blasticotoma Klug and Runaria Malaise both also with a checklist of known species. A new combination is erected for Bohea abrupta Maa: Runaria abrupta (Maa) comb. nov.. The zoogeography of Blasticotomidae is also briefly discussed. Type materials are deposited in the Insect Collection of Central South Forestry University, Zhuzhou, China.展开更多
The population of the citrus red mite, Panonychus citri (McGregor), does not increase on pear from spring to mid summer but thereafter increases abruptly. To elucidate this phenomenon, we compared the performance ...The population of the citrus red mite, Panonychus citri (McGregor), does not increase on pear from spring to mid summer but thereafter increases abruptly. To elucidate this phenomenon, we compared the performance of the mites on pear leaves with that on citrus leaves, at different time throughout the pear growing season. No significant difference was detected between the oviposition rate on pear and that on citrus throughout the season. However, the survival rate of ovipositing females that had fed on pear and the hatch rate of eggs laid by those females were significantly lower than those for females that had fed on citrus, until August. However, no significant difference was observed thereafter. The results showed that the decline of the population of citrus red mite before autumn is due to the high mortality of adult females that had fed on pear leaves and the low hatch rate of the eggs produced by those females.展开更多
文摘Three new species of Blasticotomidae from China are described in the paper: Runaria shaanxinica Wei sp. nov., Runaria hunannica Wei sp. nov. and Runaria punctata Wei sp. nov. A new generic synonym is proposed; Runaria Malaise 1931 = Bohea Maa 1944 syn. nov. Keys are given to known genera of the family Blasticotomidae and known species of the genera Blasticotoma Klug and Runaria Malaise both also with a checklist of known species. A new combination is erected for Bohea abrupta Maa: Runaria abrupta (Maa) comb. nov.. The zoogeography of Blasticotomidae is also briefly discussed. Type materials are deposited in the Insect Collection of Central South Forestry University, Zhuzhou, China.
文摘The population of the citrus red mite, Panonychus citri (McGregor), does not increase on pear from spring to mid summer but thereafter increases abruptly. To elucidate this phenomenon, we compared the performance of the mites on pear leaves with that on citrus leaves, at different time throughout the pear growing season. No significant difference was detected between the oviposition rate on pear and that on citrus throughout the season. However, the survival rate of ovipositing females that had fed on pear and the hatch rate of eggs laid by those females were significantly lower than those for females that had fed on citrus, until August. However, no significant difference was observed thereafter. The results showed that the decline of the population of citrus red mite before autumn is due to the high mortality of adult females that had fed on pear leaves and the low hatch rate of the eggs produced by those females.
