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Lepidonotus squamatus is a species of polychaete worm, commonly known as a "scale worm", in the family Polynoidae. This species occurs in both the Atlantic and the Pacific Oceans. It was first described by the Swedish naturalist Carl Linnaeus in 1758 as Aphrodita squamata but was later transferred to the genus Lepidonotus. [1]
The house fly is found all over the world where humans live and so is the most widely distributed insect. [1]This is a list of common household pests – undesired animals that have a history of living, invading, causing damage, eating human foods, acting as disease vectors or causing other harms in human habitation.
From Latin dīrus 'fearful; ominous' + fīlum 'thread', Dirofilaria is a genus of nematodes of the superfamily Filarioidea.The first known description of Dirofilaria may have been by Italian nobleman Francesco Birago in 1626 in his Treatise on Hunting: “The dog generates two worms, which are half an arm’s length long and thicker than a finger and red like fire.”
Familiar worms include the earthworms, members of phylum Annelida. Other invertebrate groups may be called worms, especially colloquially. In particular, many unrelated insect larvae are called "worms", such as the railroad worm, woodworm, glowworm, bloodworm, butterworm, inchworm, mealworm, silkworm, and woolly bear worm.
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 ...
Chaetopteridae larvae are the largest among the polychaete worms. [3] The larvae will range in size from 0.4 mm to 2.5 mm (largest polychaete larvae reported having a maximum length of 12 mm; the late stage of an unknown phyllodocid species). [3]
The worm's parapodia are modified into the shape of fans and used to create suction and pump water through the worm's parchment living tube. [3] The morphology of the structures are used in identifying species. [4] The worm feeds by using modified structures on its midbody segments that create mucus nets to trap food passed through the net. [6]
The worms mate inside the host, in which the females also lay their eggs, to be passed out in the host's feces into the environment to start the cycle again. N. americanus can lay between nine and ten thousand eggs per day, and A. duodenale between twenty-five and thirty thousand per day.