Acronicta megacephala, Schiffermuller, 1776

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

Acronicta megacephala ([Denis et Schiffermüller], 1775)

D e s c r i p t i o n. Egg subspherical, flattened ( fig. 1 ), height 0.35–0.4 mm, diameter 1.1–1.2 mm (n = 2). Egg light green with purple spot at apical part and smaller spots around the egg. Chorion white, translucent.

Chorion ridged, marked on two-thirds of surfaces. Micropylar area clearly expressed, represented by rosette and 4 rows of petalled cells ( fig. 2 ). Rosette with 13–15 cells. Walls cells elevated. Central portion of rosette with round depression. ( fig. 3 ). There are 30 of 73–76 longitudinal ridges radiating from cells of fourth row. Longest ridges unevenly wavy

Рис. 1–6. Яйца Acronictinae : Acronicta megacephala . Масштабные линейки: 1, 4 — 100 мкм; 2, 3, 5, 6 — 10 мкм.

Рис. 7–12. Яйца Acronictinae : 7 — Acronicta megacephala ; 8–11 — Acronicta rumicis ; 12 — Craniophora ligustri . Масштабные линейки 8, 10, 12 — 100 мкм; 7, 9, 11 — 10 мкм.

Рис. 13–18. Яйца Acronictinae : 13–16 — Craniophora ligustri ; яйца Metoponiinae: 17, 18 — Tyta luctuosa . Масштабные линейки: 13, 14, 16–18 — 100 мкм; 15 — 10 мкм.

at apical part of egg ( fig. 4–5 ) and rest surface as case bound pigtails ( fig. 6 ). Transverse walls not looked over. Aeropyles clearly expressed. The entire surface of a small, densely placed fiber ( fig. 7 ).

Shape of gnawed holes in eggs. Larva nibbling out round opening at apical area of the egg; only central cover on thin “stem” remained ( fig. 1 ).

O v i p o s i t i o n. Eggs solitary laid.

Figures

Fig. 1–6. Eggs of Acronictinae: Acronicta megacephala. Scale bars: 1, 4 — 100 µm; 2, 3, 5, 6 — 10 µm.

Fig. 7–12. Eggs of Acronictinae: 7 — Acronicta megacephala; 8–11 — Acronicta rumicis; 12 — Craniophora ligustri. Scale bars: 8, 10, 12 — 100 µm; 7, 9, 11 — 10 µm.