Bradyctena trychnoptila Turner, 1906

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

Bradyctena trychnoptila Turner (Figs 128–134)

(type species)

Oviposition

1♀ Code no.: G134

Period of oviposition: 20 Feb.–6 Mar.

Batch size: 11.3 ± 2.4 (n = 4)

Realised fecundity: 45

Incubation time (days): N/A

Batch configuration and attachment: Loose

Colour: White, becoming pale yellow and then pale orange (Fig. 128).

Size (mm): (n=10) L =0.74 ± 0.00, W=0.60 ± 0.01, T=0.47 ± 0.01

Width/length: 0.81

No. of females: 1

Aeropylar opening size (m) (n=7): L=2.1 ± 0.15, W=1.8 ± 0.12

Relative aeropylar opening size: 3.2

Micropyles: Indistinct (Figs 129 & 130)

No. of openings: 3

No. of cells in rosette: 7

No. of rows of cells in micropylar area: 4

Shape: Broad, bluntly ovoid, anterior pole wider than posterior, polar profile oblong, dorso­ventrally flattened (Figs 128, 129 & 131).

Characteristics: Egg marked all over by hexagonal cells with flat floors, narrow, recessed cell walls (Figs 129–134). Aeropyles slightly elevated, domed, openings moderately large (Figs 132 & 133), present on all surfaces except area in middle of the top of egg (Figs 131–134). Chorion ridged and folded (Figs 132–134). Micropylar area slightly off­centred (Fig. 129).