Casbia crataea Turner

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

Casbia crataea Turner (Figs 571–575)

Oviposition

4♀ code nos.: G22, G79, G415, G416.

Oviposition period: 25 Mar.–24 May

Batch Size: 20.4 ± 4.6 range: 5–50; (n = 15)

Realised fecundity (range): 26–138

Incubation time (days) (n=10): 14.7 ± 1.1

Batch configuration and attachment: Firmly attached, singly (Fig. 571).

Colour: Very pale green, becoming light brown with irregular red blotches spreading

from anterior pole (Fig. 571) then grey on maturity.

Size (mm): (n=10) L = 0.92 ± 0.00, W = 0.72 ± 0.00, T = 0.61 ± 0.01

Width/length: 0.79

No. of females: 2

Aeropylar opening size (m) (n=6): L = 2.80 ± 0.45, W = 1.80 ± 0.23.

Relative aeropylar opening size: 3.2

Micropyles: Distinct (Figs 572 & 573)

No.of openings: obscure

No. of cells in rosette: 8

No. of rows of cells in micropylar area: 3

Shape: Narrow, elongated, bluntly ovoid, anterior pole truncated (Figs 571, 572 & 574).

Characteristics: Egg distinctly marked on all surfaces by flat, elongated, quadrate cells with narrow, elevated walls arranged in longitudinal rows (Figs 571, 574 & 575). Aeropyles elevated, domed, openings moderately large (Fig. 575), present on all surfaces apart from top, wide side of egg (Fig. 574). Rosette cells in micropylar area recessed (Fig. 573). Chorion smooth but shallowly wrinkled (Fig. 575).