Rambles of a Naturalist Round Folkestone With Occasional Papers On the Fauna a
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It is known to exist with several other butterflies. Mr. Wallace, in his book on the Malay Archipelago, alludes to a very striking instance in Papilio Memnon, a large handsome butterfly of a deep black colour with various coloured markings, measuring five inches in expanse of wing. There THE CLOUDED YELLOW BUTTERFLY. 118 are two forms of females, the difference between them being much greater than that between Edusa and Helwe. One possesses two tail-like appendages on the hind wings, of which n...either the male nor the other female possesses the slightest vestige. The colours too are different. The tailed variety how- ever closely resembles the normal female of an allied species, P. Coon, so that we have here a case of mimicry. In the north of India P. Coon is replaced by another species P. Doubledayi, and P. Memnon is replaced by an allied species P. Androgeus. And here curiously enough there are two female forms of the latter, one of which mimics the female of P. Donbledayi. Mr. Wallace offers the following in ex- planation : " The butterflies imitated belong to a section which from some cause or other are not attacked by birds ; and by so closely resembling these in form and colour the female of Memnon and its ally also escape persecution.
What to read after Rambles of a Naturalist Round Folkestone With Occasional Papers On the Fauna a?
You can find similar books in the "Read Also" column, or choose other free books by Henry Ullyett to read onlineMoreLess
To quickly assess the difficulty of the text, read a short excerpt:
It is known to exist with several other butterflies. Mr. Wallace, in his book on the Malay Archipelago, alludes to a very striking instance in Papilio Memnon, a large handsome butterfly of a deep black colour with various coloured markings, measuring five inches in expanse of wing. There THE CLOUDED YELLOW BUTTERFLY. 118 are two forms of females, the difference between them being much greater than that between Edusa and Helwe. One possesses two tail-like appendages on the hind wings, of which n...either the male nor the other female possesses the slightest vestige. The colours too are different. The tailed variety how- ever closely resembles the normal female of an allied species, P. Coon, so that we have here a case of mimicry. In the north of India P. Coon is replaced by another species P. Doubledayi, and P. Memnon is replaced by an allied species P. Androgeus. And here curiously enough there are two female forms of the latter, one of which mimics the female of P. Donbledayi. Mr. Wallace offers the following in ex- planation : " The butterflies imitated belong to a section which from some cause or other are not attacked by birds ; and by so closely resembling these in form and colour the female of Memnon and its ally also escape persecution.
What to read after Rambles of a Naturalist Round Folkestone With Occasional Papers On the Fauna a?
You can find similar books in the "Read Also" column, or choose other free books by Henry Ullyett to read onlineMoreLess
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