Descriptions of the eggs of some southern Australian Geometridae (Lepidoptera) Author Young, Catherine J. text Zootaxa 2006 2006-08-14 1287 1 294 journal article 1175­5334 7778314F-E23A-4947-876A-9610E4C959A7 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).