Luzulaspis australis (Maskell, 1894)

Gavrilov-Zimin, Ilya A., 2020, Chromosomal and reproductive features of some Oriental and Australasian scale insects (Homoptera, Coccinea), Comparative Cytogenetics 14 (3), pp. 339-352 : 339

Luzulaspis australis (Maskell, 1894) Figs 3c , 4

Material.

K 861, Indonesia, New Guinea, vicinity of Jayapura, Entrop, under leaf sheathes of a Poaceae grass, 30.X. 2011, I.A. Gavrilov-Zimin.

New data.

2n = 18; bisexual reproduction with a Lecanoid heterochromatinization in male embryos. The eggs are laid in a long wax ovisac at the stage of late anatrepsis; i.e. incomplete ovoviviparity is characteristic of the species. Female reproductive system has the usual structure (Fig. 4 ).

Comments.

The genus Luzulaspis Cockerell, 1902 comprises about 25 species, but only one of them, European L. dactylis Green, 1928, has been thus far studied cytogenetically ( Gavrilov 2004). This species was found to have 2n = 18 and a bisexual reproduction with a Lecanoid heterochromatinization as well as presently studied Australasian L. australis .

Figures

Figure 3. Embryonic cells and chromosomes of the studied species (Coccidae). a Coccus viridis (2 n = 18) b Discochiton expansum (2 n = 18) c Luzulaspis australis (2 n = 18) d Megalocryptes buteae (2 n = 18) e Megapulvinaria maxima (2 n = 20) f Saccharolecanium krugeri (2 n = 18). Scale bars: 10 µm.

Figure 4. General anatomy of the female reproductive system in the studied species (Coccidae).