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 Psilosticha mactaria Guenée (Figs 523–528) ( type species) Oviposition 11♀ code nos.: G10, G14, G21, G28, G29, G40, G52, G98, G99, G143, G144. Oviposition period: 26 Feb.–4 Oct. Batch size: 17.2 ± 3.2 range: 3–42; (n = 17) Realised fecundity: 26.5 ± 6.0 (range): 4–64 Incubation time (days) (n=11): 19.5 ± 1.5 Batch configuration and attachment : Attached, singly or in pairs (Fig. 523). Colour: Milky olive, becoming shiny, coppery brown then transparent on maturity (Fig. 523). Size (mm): (n=10) L = 0.64 ± 0.00, W = 0.43 ± 0.00, T = 0.35 ± 0.00 Width/length: 0.67 No. of females: 1 Aeropylar opening size (m) (n=7): L = 0.68 ± 0.06, W = 0.43 ± 0.02. Relative aeropylar opening size: 1.2 Micropyles : Distinct (Figs 524 & 525) No. of openings: 1 No. of cells in rosette: 5 No. of rows of cells in micropylar area: 2 Shape: Narrow, elongated, sub­elliptical, dorso­ventrally flattened (Figs 523, 524 & 526). Characteristics : Soft chorion. Egg distinctly marked on all surfaces by hexagonal, concave cells with moderately broad, elevated walls, defined by aeropyles (Figs 523–528), double­ridged (Fig. 528), micropylar cells overlain by a fine reticulum (Fig. 525). Aeropyles elevated, prominently domed, openings very small (Figs 525 & 528), present on all surfaces apart from wider, lateral side (Fig. 527). Rosette cells recessed (Fig. 525). Chorion generally smooth (Figs 527 & 528).