Difference between earthworm and cotton worm
Earthworm is the common name for the largest members of the Oligochaeta (which is either a class or subclass depending on the author) in the phylum Annelida. In classical systems they were placed in the order Opisthopora, on the basis of the male pores opening to the outside of the body posterior to the female pores, even though the male segments are anterior to the female. Cladistic studies have supported placing them instead in the suborder Lumbricina of the order Haplotaxida. Folk names for earthworm include “dew-worm”, “rainworm”, “night crawler” and “angleworm”.
Earthworms are also called megadriles (or big worms), as opposed to the microdriles, which include the families Tubificidae, Lumbriculidae, and Enchytraeidae, among others. The megadriles are characterized by having a multilayered clitellum (which is much more obvious than the single-layered one of the microdriles), a vascular system with true capillaries, and male pores behind the female pores.
Caterpillar of the owlet moth, closely allied to the army worm. Cotton-worms are found in both North and South America, where they ravage the cotton crops whilst ignoring other plants. The cotton-worm Aletia xylinaeis in the family Noctuidae, order Lepidoptera, class Insecta, phylum Arthropoda.
The worm of the cotton is in fact original the larvaria phase of one polilla of India. He is one of the most destructive parasites of the plant of the cotton. It opens tunnels in the fiber balls and devours the seeds.
___________.WEBSCOLAR. Difference between earthworm and cotton worm. http://www.webscolar.com/difference-between-earthworm-and-cotton-worm. Fecha de consulta: 25 de mayo de 2019.