In this paper two new species of Rondaniella Johannsen, 1909 from China are described. The type specimens are deposited in Zhejiang Forestry College, China.
Boletina dispeca and B.conjuncta are reported for the first time from China.The specimens aredeposited in the Entomological Collection of Zhejiang Forestry College,China.
The karyotype of two Chinese species in Orius were studied in male germ cells prepared on air dried slides stained with Giemsa. It is reported that two species have 24 chromosomes in diploid and X Y sex chromosomal mechanism. But the beha vior of chromosomes during meiosis between two species is different. Which show in the arrangment and location of the X chromosome and autosome at the late diakinesis as well as metaphase stage respectively and so on. These characteristics may be used in ta xonomy among species of Orius .
