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Each egg contains a number of tiny funnel-shaped openings at one end, called micropyles; the purpose of these holes is to allow sperm to enter and fertilize the egg. Butterfly eggs vary greatly in size and shape between species, but are usually upright and finely sculptured. Some species lay eggs singly, others in batches.
Eggs are cream colored or light green, ovate to conical in shape, and about 1.2 mm × 0.9 mm (0.047 in × 0.035 in) in size. The eggs weigh less than 0.5 mg (0.0077 gr) each and have raised ridges that form longitudinally from the point to apex to the base.
The species is also highly prized by collectors, and because of its rarity, this butterfly fetches a very high price on the black market, reportedly US$8,500-10,000 in the United States in 2007. [10] In 2001, renowned Canadian researcher Gilles Deslisle was fined CA$50,000 for illegally importing six specimens of Queen Alexandra's birdwings. [ 11 ]
Egg. Females lay their eggs singly on the host plant leaves, [24] preferring to oviposit on host plants near nectar sources. [26] The egg is round and green, later turning yellowish green with reddish dots. [24] The size of the egg is large for a butterfly, being 0.8 millimeters (0.03 in) in height and 1.2 millimeters (0.05 in) in width. [27]
The eggs are usually pale green, ovate to conical in shape, with [3] a flattened base and slightly truncated top, and is longitudinally ribbed with raised cross-lines between the ridges. [5] [16] Compared to that of the monarch butterfly, the egg of the queen butterfly is taller relative to its width. [7]
The eggs are generally 0.7 by 0.9 mm in size. [8] Laid on terminal shoots of the larval food-plant, encircling the stem. ... The mourning cloak butterfly is a large ...
Eggs laid by older females of a few butterfly species have been noted to be smaller in size than their younger counterparts. In the absence of adequate nutrition, the females of the corn-borer moth ( Ostrinia spp.) have been recorded to lay clutches with egg sizes below normal.
The female butterfly goes from plant to plant, laying a single egg at a time on top of a leaf, which it holds onto with its legs, and flies off as soon as the egg is laid. The egg is round, light yellowish in colour, flattened at the base, smooth-surfaced, and about 1.5 mm in height. [12] [15] [19] Fertile eggs develop a small red mark at the ...