COLEOPTERA, a term used in zoological classification for the true beetles which form one of the best-marked and most natural of the orders into which the class Hexapoda (or Insecta) has been divided.
DIPTERA (Sis, double, 7rTEpa, wings), a term (first employed in its modern sense by Linnaeus, Fauna Suecica, 1st ed., 1746, p. 306) used in zoological classification for one of the Orders into which the Hexapoda, or Insecta, are divided.
Linnaeus in his Systema naturae (1735) grouped under the class Insecta all segmented animals with firm exoskeleton and jointed limbs - that is to say, the insects, centipedes, millipedes, crustaceans, spiders, scorpions and their allies.
For the class of the true insects included in this phylum, Linnaeus's old term Insecta, first used in a restricted sense by M.
In 1735 appeared the first edition of the Systema naturae of Linnaeus, in which the "Insecta" form a group equivalent to the Arthropoda of modern zoologists, and are divided into seven orders, whose names - Coleoptera, Diptera, Lepidoptera, &c., founded on the nature of the wings - have become firmly established.
Newport ("Insecta" in Encyc. Anat.
The Insecta of Linnaeus was a group exactly equivalent to the Arthropoda founded a hundred years later by Siebold and Stannius.
Classes: Arachnida, Insecta (including Sub-Classes M y riapoda, Hexapoda), Crustacea (including Sub-Classes Entomostraca, Malacostraca), Epizoa (Epizootic Crustacea), Annellata (Chaeto p ods and Leeches), Cirripedia.
Classes: Crustacea, Arachnida,Myriapoda,Insecta,Chaetognatha, Annelida.
Distant, A Naturalist in the Transvaal (1892), and Insecta transvaaliensia (1900 seq.); M.
- The following works are the most important: Denny, Monographia Anoplurorum Britanniae (London, 18 43); Giebel, Insecta Epizoa (which contains the working-up of Nitzsch's posthumous materials; Leipzig, 1874); van Beneden, Animal Parasites (London, 1876); Piaget, Les Pediculines (Leiden, 1880); Megnin, Les Parasites et les maladies parasitaires (Paris, 1880); Neumann, Parasites and Parasitic Diseases of Domesticated Animals (1892); Osborn, Pediculi and Mallophaga affecting Man and the Lower Animals (Washington, 1891; U.S. Dept.
They are distributed thus: Vertebrata, 8 species; Insecta, 17; Arachnida, 12; Myriapoda, 2; Crustacea, 5; Vermes, 3; Mollusca, 1.
Aristotle had included in one class "Entoma" the six-legged arthropods which form the modern zoological class of the Hexapoda or Insecta, besides the Arachnida, the centipedes and the millipedes.
The class Insecta of Linnaeus (1758) was coextensive with the Arthropoda of modern zoologists.
The general practice for many years past among naturalists has been to restrict the terms "Insecta" and "insect" to the class of Arthropods with three pairs of legs in the adult condition: bees, flies, moths, bugs, grasshoppers, springtails are "insects," but not spiders, centipedes nor crabs, far less earthworms, and still less slugs, starfishes or coral polyps.
The 1 The group Arthropoda itself,th usconstituted,wasprecisely identical in its area with the Insecta of Linnaeus, the Entoma of Aristotle.
Lamarck's penetrating genius is chiefly responsible for the shrinkage of the word Insecta, since it was he who, forty years after Linnaeus's death, set up and named the two great classes Crustacea and Arachnida (included by Linnaeus under Insecta as the order " Aptera "), assigning to them equal rank with the remaining Insecta of Linnaeus, for which he proposed the very appropriate class-name " Hexapoda."
Lamarck, however, appears not to have insisted on this name Hexapoda, and so the class of Pterygote Hexapods came to retain the group-name Insecta, which is, historically or etymologically, no more appropriate to them than it is to the classes Crustacea and Arachnida.