Thalaina inscripta Walker, 1855

Young, Catherine J., 2006, Descriptions of the eggs of some southern Australian Geometridae (Lepidoptera), Zootaxa 1287, pp. 1-294 : 1-294

Thalaina inscripta Walker (Figs 370–376)

Oviposition

6♀ code nos.: G39, G73, G141, G148, G181, G430.

Oviposition period: 20 Feb–14 May

Batch size: 16.0 ± 8.7 range: 6–30 (n = 6)

Mean realised fecundity: 16.0 ± 8.7 (range): 6–30

Incubation time (days) (n = 5): 22–29 (on moistening)

Batch configuration and attachment: Attached, singly or small groups (Fig. 370).

Colour: Pale green, becoming greyish brown (Fig. 370).

Size (mm): (n=10) L=1.00 ± 0.03, W=0.86 ± 0.03, T=0.58 ± 0.02

Width/length: 0.86

No. of females: 2

Aeropylar opening size (m) (n=5): L=2.12 ± 0.19, W=1.67 ± 0.16

Relative aeropylar opening size: 2.6

Micropyles: Indistinct (Figs 371 & 372)

No. of openings: obscure

No. of cells in rosette: obscure

No. of rows of cells in micropylar area: 4

Shape: Broad, bluntly ovoid; anterior pole truncated; posterior pole sub­acute; flattened dorso­ventrally; wedge­shaped laterally; anterior pole angled to horizontal axis (Figs 370, 371, 373 & 374).

Characteristics: Egg marked on all surfaces by convex, hexagonal cells with narrow recessed walls (Figs 370, 373 & 374), except walls much broader, cell form indistinct in

cells on anterior pole (Fig. 375). Aeropyles inconspicuous, openings moderately small, non­elevated (Figs 375 & 376), present on all surfaces except middle of top of egg. Micropyles, micropylar area poorly defined, cell form indistinct (Fig. 372); micropyles off­centred (Fig. 371). Chorion smooth, slightly wrinkled (Figs 375 & 376).