Chromosomal and reproductive features of some Oriental and Australasian scale insects (Homoptera, Coccinea) Author Gavrilov-Zimin, Ilya A. Zoological Institute, Russian Academy of Sciences, Universitetskaya nab. 1, St. Petersburg, 199034, Russia coccids@gmail.com text Comparative Cytogenetics 2020 14 3 339 352 http://dx.doi.org/10.3897/CompCytogen.v14i3.53367 journal article http://dx.doi.org/10.3897/CompCytogen.v14i3.53367 1993-078X-3-339 D2A1B8A1B2EE42518F3666B295BA1B73 2CD35BDCEE2B569795486A48059CE160 Megalocryptes buteae Takahashi, 1942 Figs 3d , 4 , 5c Material. K 1536, Thailand, Pai, on twigs of an undetermined dicotyledonous tree, 13.XI.2019, I.A. Gavrilov-Zimin. New data. 2n = 18; there is no heterochromatinization in all 72 studied embryos from 3 females, no sperm in spermathecae and no males in the population suggesting thus thelytokous reproduction. Female reproductive system is distinguished by unusually long and thin lateral oviducts (Fig. 4 ). Cleavage divisions in the egg start just prior to oviposition. Comments. These are the first cytogenetic and reproductive data for the small Oriental genus Megalocryptes Takahashi, 1942 which comprises two species only.