Didymoctenia exsuperata Walker, 1860

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

Didymoctenia exsuperata Walker (Figs 488–492)

(type species)

Oviposition

2♀ code nos.: G193, G202

Oviposition period: 19–28 Apr.

Batch range: 10–50; (n = 2)

Realised fecundity: 10–50

Incubation time (days): 28

Batch configuration and attachment: Loosely attached, singly.

Colour: Bluish­green, greyish brown on maturity.

Size (mm): (n=5) L=0.73 ± 0.01, W=0.49 ± 0.01, T=0.38 ± 0.01

Width/length: 0.67

No. of females: 1

Aeropylar opening size (m) (n=1): L=2.72, W=1.35

Relative aeropylar opening size: 3.5

Micropyles: Distinct (Figs 488 & 489)

No. of openings: 6

No. of cells in rosette: 8

No. of rows of cells in micropylar area: 3

Shape: Very narrow, elongated, bluntly ovoid; anterior pole truncated; flattened dorso­ventrally; elongated (Figs 488 & 490).

Characteristics: Chorion soft. Egg distinctly marked on all surfaces by concave polygonal cells with broad, rounded, wavy walls arranged in longitudinal rows (Figs 488 & 490–492), cell walls in micropylar area narrow (Fig. 489). Aeropyles inconspicuous, openings moderately large slightly elevated, domed (Fig. 488); present on all surfaces apart from middle of top of egg (Figs 490 & 492). Rosette cells in micropylar area recessed (Fig. 489). Chorion blistered, appearing granulated, ridged on and near anterior pole (Fig. 492).