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Egg of Hemipyrellia ligurriens stained with 1% potassium permanganate. (a) Whole egg; MA: median area. (b) Anterior end of egg showing bifurcated plastron and micropyle; M: micropyle. (c) External chorionic sculpture showing hexagonal pattern, with its reticular boundary slightly elevating like a net. Bars = 100 μm for all figures.
