Plesanemma fucata R. Felder & Rogenhofer

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

Plesanemma fucata R. Felder & Rogenhofer (Figs 356–362)

(type species)

Oviposition

4♀ code nos.: G63, G55, G67, G422

Oviposition period: 6 Apr.–14 May

Batch size: 19.2 ± 2.0, range: 10–25 (n = 6)

Mean realised fecundity: 28.8 ± 7.2

Incubation Time (days): 17–30 (on moistening)

Batch configuration and attachment: Attached, singly, clusters (Fig. 356).

Colour: Off­white, becoming pinkish­brown to dark pearly brown and transparent grey before eclosion (Fig. 356).

Size (mm): (n=28) L=1.34 ± 0.01, W=0.99 ± 0.01, T=0.81 ± 0.01

Width/length: 0.74

No. of females: 3

Aeropylar opening size (m) (n=5): L=1.32 ± 0.05, W=2.00 ± 0.00

Relative aeropylar opening size: 1.0

Micropyles: Distinct (Figs 357 & 358)

No. of openings: 4

No. of cells in rosette: 7,11

No. of rows of cells in micropylar area: 6

Shape: Moderately broad, bluntly ovoid, posterior pole sub­acute; anterior pole truncated; polar profile circular; wedged shape in profile; anterior pole slightly angled to horizontal axis (Figs 356 & 359).

Characteristics: Chorion tough. Egg marked on all surfaces except narrow lateral sides by slightly convex hexagonal cells (Figs 359–361); cell walls narrow, recessed (Fig. 360); cells slightly concave, walls slightly elevated on lateral sides (Fig. 361). micropylar cell walls narrow, slightly elevated, primary, secondary, cells recessed (Figs 357, 358). Aeropyles slightly elevated, openings very small (Figs 361 & 362), present on all surfaces apart from middle of top of egg. Chorion rough, wrinkled (Figs 361 & 362).