Scopula perlata Walker, 1861

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

Scopula perlata Walker (Figs 850–857)

Oviposition

2♀ code nos.: G410, G412

Oviposition period: 7–10 Mar.

Batch size: 8–30; (n = 2)

Realised fecundity: 8–30

Incubation time (days): 8

Batch configuration and attachment: Very loosely attached, singly, small groups, short rows (Fig. 850).

Colour: Very pale green becoming pale orange with orange blotches (Fig. 850), then transparent grey on maturity.

Size (mm) (n=12): L = 0.64 ± 0.01, W = 0.42 ± 0.00, T = 0.40 ± 0.01.

Width/length: 0.65

No. of females: 2

Aeropylar opening size (m) (n=5): L = 0.70 ± 0.09, W = 0.49 ± 0.04

Relative aeropylar opening size: 1.1

Micropyles: Indistinct (Figs 851 & 852)

No. of openings: 3

No. of cells in rosette: 7

No. of rows of cells in micropylar area: 2

Shape: Narrow, elongated, ellipsoid, compressed dorso­ventrally (Figs 850, 851 & 853).

Characteristics: Egg marked on all surfaces by flat, quadrate cells arranged longitudinally on wider lateral sides, with lengthwise walls relatively broad, elevated, forming prominent lengthwise ribs; transverse walls unelevated, barely discernible (Figs 851, 853–855); cells on anterior pole irregular polygons, concave with moderately broad walls overlain with a very narrow shallow reticulum (Fig. 852). Aeropyles very inconspicuous, slightly elevated, openings very small, distributed on anterior pole only (Fig. 856). Chorion smooth, overlaid with a mesh­like reticulum (Figs 854–857).