Chlenias seminigra Rosenstock, 1885

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

Chlenias seminigra Rosenstock (Figs 163–169)

Oviposition

2♀ code nos.: G74, G80

Period of oviposition: 17–24 May

Batch size: 40–50 (n = 2)

Realised fecundity (range): 40–50

Incubation time (days): 38 (on moistening)

Batch configuration and attachment: Attached, singly, in rows or small groups (Fig. 163).

Colour: Pale yellow, becoming light brown with darker spots (Fig. 163).

Size (mm): (n=10) L =0.73 ± 0.02, W=0.55 ± 0.01, T=0.39 ± 0.01

Width/length: 0.75

No. of females: 2

Aeropylar opening size (m) (n=5): L=2.0 ± 0.16, W=1.8 ± 0.15

Relative aeropylar opening size: 2.5

Micropyles: Distinct (Figs 164 & 165)

No. of openings: 5

No. of cells in rosette: 9

No. of rows of cells in micropylar area: 4

Shape: Moderately broad, sub­cuboidal, anterior pole truncated, slightly wider than posterior, polar profile sub­rectangular, dorso­ventrally flattened (Figs 163, 164, 166 & 167).

Characteristics: Egg unmarked apart from hexagonal cells with slightly concave floors, aeropyles only visible on and around anterior pole (Figs 164, 166–168). Cell walls narrow, slightly elevated in micropylar area (Fig 164, 166–168). Cells surrounding

micropylar area outlined only by aeropyles sometimes numbering more than 6 at cell walls, aeropyles slightly elevated, openings moderately large (Fig. 168). Chorion generally smooth but granulated or blistered (Fig. 169).