Sent by Alfred Russel Wallace, Ternate to Francis P. Pascoe [none given] on 20 December 1860.
Has received letters of January and March on his return last month. Thanks for papers but has not received the list of longicorns of Australia. "The quantity of obscure species in my collections are beginning to frighten me." Has just packed over 13,000 specimens, but they are particularly poor in longicorns and Coleoptera generally. The geographical distribution of insects in the archipelago is far less strongly marked than that of birds and mammals, may be imputed to the greater liability of insects to accidental dispersion etc
Hale Carpenter, Geoffrey Douglas. (1939). A Letter from A. R. Wallace to F. P. Pascoe, written from Ternate, 20 December 1860. Proceedings of the Royal Entomological Society of London Series A, 14: 77-78. [p. 77-78]
Transcriber: Smith, Charles Hyde
Transcription date: April 11, 2013
Scrutiny: 11/04/2013 - Catchpole, Caroline;
Signed off: no
[]1 [p. 77]
My Dear Mr. Pascoe,
Yours of January and March last were only received by me on my return here last month.
Many thanks for the papers you have sent me (the list of Longicorns of Australia I have not, however, received) and especially for your ideas on the subject of publishing genera and species. Your plan has removed a considerable weight from my mind, for the quantity of minute and obscure species in my collections were beginning to frighten me.
My collections now just packed are immense as regards specimens (above 13,000), but they are particularly poor in Longicorns and, in fact, in Coleoptera generally. There will be, no doubt, some curious and new things among the small ones, which are very numerous. They are from Ceram, Mysol, and Waigiou, and if you are taking to Homoptera you will find, I think, the largest collection of these you have ever seen.
The Geographical distribution of Insects in the Archipelago is certainly far less strongly marked than that of Birds and Mammals, but I think that it may be in a great measure imputed to the much greater liability of insects to accidental dispersion.
Still such cases as Tmesisternus and its allies strictly confined to the Australian region of the Archipelago, and Collyris almost equally peculiar to the Indian region, point to the same primary distribution in the one case as in the other.
More generally, however, the same genera have, I think, subgroups with a characteristic "facies" in each region.
Insects, moreover, are much more affected as to form by local circumstances than Birds and Mammals; thus the extreme general similarity in climate and vegetation between Borneo and N. Guinea has led also to a general similarity in the most prevalent insect forms, while the really close zoologic connection between Australia and N. Guinea is obscured by the very strongly contrasted physical features of the two countries being favourable to the propagation and development of distinct forms of insect life. Thus the ANTHRIBIDAE of the Indian region have increased and developed rapidly in the equally luxuriant forests of the Moluccas and N. Guinea, while in the arid plains of Australia they barely exist. On the other hand, the numerous MELOLONTHIDAE of Australia, favoured by the dry climate and numerous flowering shrubs of its plains, are unknown in the damp and flowerless forests of N. Guinea and the Moluccas, where also the more bulky forms of the Indian region have not been able to [] [p. 78] penetrate. Hence the excessive paucity of Lamellicorns in N. Guinea. The distribution of insects is, therefore, more obscure and complicated than that of the vertebrates. It was originally the same, but it is more rapidly affected by time and the accidents of distribution and differences of climate.
yours very faithfully,
Alfred R. Wallace.
F. P. Pascoe Esq.
1. Editor Charles H. Smith's Note: The title of a note by Hale Carpenter printed on pages 77-78 of the Proceedings of the Royal Entomological Society of London Series A in 1939. The letter is preceded by a short introduction from Carpenter, not given here.
SOURCE OF TRANSCRIPT
This transcript originates from Charles H. Smith’s The Alfred Russel Wallace Page website (http://people.wku.edu/charles.smith/index1.htm): See http://people.wku.edu/charles.smith/wallace/S711.htm
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