S. KitthaweeL. VasinpiyamongkolMahidol University2018-07-242018-07-242002-12-01Cytologia. Vol.67, No.4 (2002), 435-438001145452-s2.0-0036949848https://repository.li.mahidol.ac.th/handle/20.500.14594/19957Spalangia endius, a pupal parasitoid of tephritid flies, has a karyotype of n=4, the lowest haploid chromosome number ever recorded for a pteromalid. This was determined by examining mitotic cells of the neuroganglia of male pupae. A diploid chromosome number (2n)=8 was also determined from the neuroganglia of female pupae. The diploid mitotic karyotype is comprised of 4 metacentric chromosome pairs.Mahidol UniversityAgricultural and Biological SciencesBiochemistry, Genetics and Molecular BiologyArticleSCOPUS10.1508/cytologia.67.435