Tyta luctuosa, Schiffermuller, 1776

Dolinskaya, I. V., 2014, Egg Morphology Of Some Noctuidae (Lepidoptera), Vestnik Zoologii 48 (4), pp. 353-364 : 357

Tyta luctuosa ([Denis & Schiffermüller], 1775)

D e s c r i p t i o n. Egg subspherical ( fig. 17 ), height 0.5 mm, diameter 0.5–0.6 mm (n = = 2). Fresh egg pale yellow with black spot at apical part of egg. As egg develops it becomes pale grey and then grey. Chorion white, translucent.

Chorion ridged, marked on two thirds surfaces. Micropylar area represented by clearly expressed rosette and 1 row faintly expressed long, narrow and pointed petalled cells ( fig. 18 ). Rosette elevated with 9–11 short and wide cells. Walls of cells elevated. ( fig. 19 ). There are 9–10 of 28–29 clearly expressed longitudinal ridges radiate from cells of first row. Transverse ridges weakly expressed ( fig. 17–18 ). The entire surface looks like as sharply expressed shallow network ( fig. 20 ).

Shape of gnawed holes in eggs. Caterpillar nibbles out large oval opening at lateral part of egg ( fig. 17 ).

Figures

Fig. 13–18. Eggs of Acronictinae: 13–16 — Craniophora ligustri; eggs of Metoponiinae: 17, 18 — Tyta luctuosa. Scale bars: 13, 14, 16–18 — 100 µm; 15 — 10 µm.

Fig. 19–24. Eggs of Metoponiinae: 19, 20 — Tyta luctuosa; eggs of Cuculliinae: 21–24 — Cucullia xeranthemi. Scale bars: 21 — 100 µm; 19, 20, 22, 23 — 10 µm; 24 — 1.0 µm.