Casbia melanops Rosenstock

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

Casbia melanops Rosenstock (Figs 555–560)

Oviposition

5♀ code nos.: G5, G6, G82, G147, G417.

Oviposition period: 20 Feb.–24 May

Batch Size: 20.4 ± 5.5 range: 2–50; (n = 11)

Mean realised fecundity: 44.8 ± 13.8 (range): 13–91

Incubation time (days): 8–20

Batch configuration and attachment: Loosely attached, singly (Fig. 555).

Colour: Very pale green (Fig. 555) becoming marked with sparse orangish­red blotches, then uniform orangish­red, grey on maturity.

Size (mm): (n=15) L=0.71 ± 0.01,W = 0.51 ± 0.01, T = 0.41 ± 0.01

Width/length: 0.72

No. of females: 2

Aeropylar opening size (m) (n=5): L = 3.24 ± 0.09.

Relative aeropylar opening size: 4.6

Micropyles: Distinct (Figs 556 & 557)

No. of openings: 4

No. of cells in rosette: 7

No. of rows of cells in micropylar area: 3

Shape: Narrow, elongated, bluntly ovoid, anterior pole truncated; flattened dorsoventrally (Figs 555, 556 & 558).

Characteristics: Chorion moderately soft. Egg distinctly marked on all surfaces by flat, elongated, quadrate cells with narrow, elevated walls arranged in longitudinal rows (Figs 555, 556, 558–560). Aeropyles elevated, openings moderately large (Fig. 559), present on all surfaces apart from top, wide side of egg (Fig. 560). Primary, secondary cells in micropylar area recessed (Fig. 557). Chorion shallowly wrinkled (Fig. 560), shallowly ridged on anterior pole (Fig. 557).