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 Thalaina inscripta Walker (Figs 370–376) Oviposition 6♀ code nos.: G39, G73, G141, G148, G181, G430. Oviposition period: 20 Feb–14 May Batch size: 16.0 ± 8.7 range: 6–30 (n = 6) Mean realised fecundity: 16.0 ± 8.7 (range): 6–30 Incubation time (days) (n = 5): 22–29 (on moistening) Batch configuration and attachment : Attached, singly or small groups (Fig. 370). Colour: Pale green, becoming greyish brown (Fig. 370). Size (mm): (n=10) L=1.00 ± 0.03, W=0.86 ± 0.03, T=0.58 ± 0.02 Width/length: 0.86 No. of females: 2 Aeropylar opening size (m) (n=5): L=2.12 ± 0.19, W=1.67 ± 0.16 Relative aeropylar opening size: 2.6 Micropyles : Indistinct (Figs 371 & 372) No. of openings: obscure No. of cells in rosette: obscure No. of rows of cells in micropylar area: 4 Shape: Broad, bluntly ovoid; anterior pole truncated; posterior pole sub­acute; flattened dorso­ventrally; wedge­shaped laterally; anterior pole angled to horizontal axis (Figs 370, 371, 373 & 374). Characteristics : Egg marked on all surfaces by convex, hexagonal cells with narrow recessed walls (Figs 370, 373 & 374), except walls much broader, cell form indistinct in cells on anterior pole (Fig. 375). Aeropyles inconspicuous, openings moderately small, non­elevated (Figs 375 & 376), present on all surfaces except middle of top of egg. Micropyles, micropylar area poorly defined, cell form indistinct (Fig. 372); micropyles off­centred (Fig. 371). Chorion smooth, slightly wrinkled (Figs 375 & 376).