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.