On European Spiders
On European Spiders
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37), Atttis WalcK., Cyrtonota Sim. , Hdiophania C. KoCH and Sakicus (Latr.) , of which the last four be- long to the Fauna of Europe; the greatest part of Koch's genera (and sub- genera) Simon accepted as separate sub-genera or "groups" *). Simon's classification of the Attoidse here referred to, appears to me very defective, and can hardly be considered as making any advance towards the solution of the difficult iproblem; the genus Cyrtonota, in which he includes KoCH's Calliethera together wi...th Philia, Plexippus, etc. especially is very unnatural.
Simon himself has moreover since abandoned this division and adopted another quite different; he now ») divide* the European Attoidse into 10 genera (of which two, Menemems and Yllenns, are new) according to characteristics principally derived from the form of the males palpi and mandibles. This division has indeed the advantage of being based upon fixed and easily observable differences of form, but it has also the great defect of applying only to one (and that the rarer) sex; it is impossible to say to which of Simon's genera a female specimen belongs , as long as the male of the same species is unknown, unless it should happen, that the females of that genus are also distinguished by some common feature; but in such case that feature ought to have been included among the characteristics of the genus.
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To quickly assess the difficulty of the text, read a short excerpt:
37), Atttis WalcK., Cyrtonota Sim. , Hdiophania C. KoCH and Sakicus (Latr.) , of which the last four be- long to the Fauna of Europe; the greatest part of Koch's genera (and sub- genera) Simon accepted as separate sub-genera or "groups" *). Simon's classification of the Attoidse here referred to, appears to me very defective, and can hardly be considered as making any advance towards the solution of the difficult iproblem; the genus Cyrtonota, in which he includes KoCH's Calliethera together wi...th Philia, Plexippus, etc. especially is very unnatural.
Simon himself has moreover since abandoned this division and adopted another quite different; he now ») divide* the European Attoidse into 10 genera (of which two, Menemems and Yllenns, are new) according to characteristics principally derived from the form of the males palpi and mandibles. This division has indeed the advantage of being based upon fixed and easily observable differences of form, but it has also the great defect of applying only to one (and that the rarer) sex; it is impossible to say to which of Simon's genera a female specimen belongs , as long as the male of the same species is unknown, unless it should happen, that the females of that genus are also distinguished by some common feature; but in such case that feature ought to have been included among the characteristics of the genus.
What to read after On European Spiders?
You can find similar books in the "Read Also" column, or choose other free books by Thorell, T. (Tord), 1830-1901 to read onlineMoreLess
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