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Lumbricus
The genus ''Lumbricus'' contains some of the most commonly seen earthworms in Europe among its nearly 700 valid species. Characteristics of some commonly encountered species are: * ''Lumbricus rubellus'' is usually reddish brown or reddish violet, iridescent dorsally, and pale yellow ventrally. They are usually about 25–105 mm in length, and have around 95-120 segments. * ''Lumbricus castaneus'' varies from chesnut to violet brown; brown or yellow ventrally, and has an orange clitellum. They are usually about 30–70 mm long, and have around 82–100 segments. * ''Lumbricus terrestris'' has several common names, including common earthworm, nightcrawler, and dew worm. It is strongly pigmented, brown-red dorsally, and yellowish ventrally. Setae are widely paired at both ends of the body. It is about 90–300 mm long, and has around 110–160 segments. * ''Lumbricus festivus'' is not found in large numbers. It is red-brown, lighter ventrally, iridescent dorsally. Th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lumbricus Rubellus
''Lumbricus rubellus'' is a species of earthworm that is related to ''Lumbricus terrestris''. It is usually reddish brown or reddish violet, iridescent dorsally, and pale yellow ventrally. They are usually about to in length, with around 95–120 segments. Their native distribution was mainland Europe and the British Isles, but they have currently spread worldwide in suitable habitats. Size and appearance ''Lumbricus rubellus'', or the "red earthworm", ranges from to in length and has smooth, reddish, semi-transparent, flexible skin segmented into circular sections. Each segment contains four pairs of setae, or bristles, and the total number of segments per matured organism ranges from 95–105.Edwards, C.A., and Lofty J.R. (1972). ''Biology of earthworms''. Halsted Press, New York, NY. The segmentation of ''Lumbricus rubellus'' identifies the organism as a member of Phylum Annelida, while the enlarged segments towards the anterior of the organism called the clitellum denote ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lumbricus Terrestris
''Lumbricus terrestris'' is a large, reddish worm species thought to be native to Western Europe, now widely distributed around the world (along with several other Lumbricidae, lumbricids). In some areas where it is an introduced species, some people consider it to be a significant pest for out-competing native worms. Through much of Europe, it is the largest naturally occurring species of earthworm, typically reaching 20 to 25 cm in length when extended. Common names Because it is widely known, ''L. terrestris'' goes under a variety of common names. In Britain, it is primarily called the common earthworm or lob worm (though the name is also applied to a marine polychaete). In North America, the term nightcrawler (or vitalis) is also used, and more specifically Canadian nightcrawler, referring to the fact that the large majority of these worms sold commercially (usually as fishing bait) are from Southern Ontario. In Canada, it is also called the dew worm, or "Grandaddy E ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Earthworm
An earthworm is a soil-dwelling terrestrial invertebrate that belongs to the phylum Annelida. The term is the common name for the largest members of the class (or subclass, depending on the author) Oligochaeta. In classical systems, they were in the order of Opisthopora since the male pores opened posterior to the female pores, although the internal male segments are anterior to the female. Theoretical cladistic studies have placed them in the suborder Lumbricina of the order Haplotaxida, but this may change. Other slang names for earthworms include "dew-worm", "rainworm", "nightcrawler", and "angleworm" (from its use as angling hookbaits). Larger terrestrial earthworms are also called megadriles (which translates to "big worms") as opposed to the microdriles ("small worms") in the semiaquatic families Tubificidae, Lumbricidae and Enchytraeidae. The megadriles are characterized by a distinct clitellum (more extensive than that of microdriles) and a vascular system ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
