312:, and there is every reason to believe that this is always the case, and that forms intermediate in character never occur. To illustrate these phenomena, let us suppose a roaming Englishman in some remote island to have two wives—one a black-haired red-skinned Indian, the other a woolly-headed sooty-skinned negress; and that instead of the children being mulattoes of brown or dusky tints, mingling the characteristics of each parent in varying degrees, all the boys should be as fair-skinned and blue-eyed as their father, while the girls should altogether resemble their mothers. This would be thought strange enough, but the case of these butterflies is yet more extraordinary, for each mother is capable not only of producing male offspring like the father, and female like herself, but also other females like her fellow wife, and altogether differing from herself!
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distinct female forms and a male; and that an hermaphrodite plant should produce from the same seed-capsule three distinct hermaphrodite forms, bearing three different kinds of females and three or even six different kinds of males. Nevertheless these cases are only exaggerations of the common fact
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1927 Genetics in
Relation to Agriculture: "Unisexual Polymorphism in Lepidoptera. In many species of butterflies in nature there are two or more distinct female types but only a single male type. More rarely the reverse condition is shown in which two or more distinct male types are opposed to a
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There are, also, cases of dimorphism and trimorphism, both with animals and plants. Thus, Mr. Wallace, who has lately called attention to the subject, has shown that the females of certain species of butterflies, in the Malay archipelago, regularly appear under two or even
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460:: In trimorphic species of Asplanchna, females can vary in size and shape, from a small saccate morph to giant cruciform and campanulate morphs. In species that also reproduce sexually, diploid eggs can develop into two types of females…"
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453:: “We discovered a novel mating system in which the individual males of various species of beetles have the capacity to express one of three alternative morphologies … ”
379:: "In November, 1861, we find Mr. Wallace at Lobo Raman, in the centre of the east end of Sumatra. … A single brood of caterpillars is found to produce males as well as
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It certainly at first appears a highly remarkable fact that the same female butterfly should have the power of producing at the same time
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But the most curious fact connected with these distinct forms is, that they are both the offspring of either form.
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that the female produces offspring of two sexes which sometimes differ from each other in a wonderful manner.
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on
Knowledge (XXG). If you would like to participate, please visit the project page, where you can join
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single female form. To this phenomenon the term unisexual polymorphism, has been given."
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A single brood of larvæ were bred in Java by a Dutch entomologist, and produced
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Doubleday and Hewitson 1848, on p. 90 of
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conspicuously distinct forms, not connected by intermediate varieties. …
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In starting to search for early mentions of animal trimorphism, I see:
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females; and forms intermediate in character seem never to occur."
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female forms of
Papilio Memnon, and related text from p. 202:
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A List of the
Butterflies of Borneo, and Nymphalinae. Part II
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of certain butterflies from the Malay
Archipelago appear in
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Someone is misreading
Wallace — is it Darwin or is it me?
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conspicuously distinct forms without intermediate links."
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No cite is provided, but I found on p. 200 of
Wallace's
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on
Knowledge (XXG). Leave messages on the WikiProject
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Now I see Darwin, twice in the last para starting on
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