Gastrina cristaria Guenée

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

Gastrina cristaria Guenée (Figs 399–405)

(type species)

Oviposition

8♀ Code no.: G85, G89, G93, G124, G292, G299, G374, G377

Period of oviposition: 26 Sept.–9 Feb.

Batch size: 56.6 ± 8.2 (n = 21)

Mean realised fecundity: 148.5 ± 42.8

Incubation time (days): 9.9 ± 0.9

Batch configuration and attachment: Attached, singly, small or large groups (Fig. 399).

Colour: Pale yellow, becoming pinkish orange (Fig. 399).

Size (mm): (n=15) L=0.80 ± 0.01, W=0.55 ± 0.01, T=0.44 ± 0.01

Width/length: 0.69

No. of females: 3

Aeropylar opening size (m) (n=10): L = 3.76 ± 0.15, W = 3.06 ± 0.09

Relative aeropylar opening size: 4.8

Micropyles: Distinct (Figs 400 & 401)

No. of openings: 4

No. of cells in rosette: 7

No. of rows of cells in micropylar area: 3

Shape: Narrow, elongated, sub­elliptical, anterior pole truncated, not wider than

posterior pole, polar profile sub­circular, dorso­ventrally flattened (Figs 399, 400 & 402).

Characteristics: Egg marked on all surfaces with hexagonal cells (Figs 399, 400, 402, 403 & 405). Cell walls generally moderately broad, double­ridged on narrow lateral sides and anterior pole, floors flat (Figs 402–405); micropylar cell walls narrow, single­ridged, shallowly reticulated (Figs 400 & 401). Aeropyles elevated, openings moderately large, domed (Figs 400. 401 & 404), present on all surfaces except middle of top of egg. Chorion smooth (Figs 402, 403 & 405).