New data on karyotypes and the number of testicular follicles in the psyllid families Aphalaridae, Psyllidae, Carsidaridae and Triozidae (Homoptera, Psylloidea)

SUMMARYKaryotypes of 13 species from Taiwan (9 species) and from Holland (4 species) belonging to the families Aphalaridae, Psyllidae, Homotomodae, Carsidaridae, and Triozidae are described for the first time. Karyotypes of Bactericera maura, Cacopsylla hippophaeus, Dynopsylla pinnativena, Leptynoptera sulfurea, Macrohomotoma gladiata, Paurocepbala chonchainensis, P. sauteri, P. trematos, Sympauropsylla triozoneura, and Tenaphalara acutipennis were 2n = 24 + X0. However, the karyotypes of three species are as follows: Cacopsylla sorbi 2n = 20 + XY, Heteropsylla cubana 2n = 24 + XY, and Trioza remota 2n= 14+ X0.