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Common House Fly
The common house fly is a common flying insect that is found throughout the world. Anatomy: Like all insects, the house fly has a body divided into three parts (head, thorax, and abdomen), a hard exoskeleton, and six jointed legs. Flies also have a pair of transparent wings. The house fly can taste using its feet and with its mouthparts. Adults are about 1/4 to 1/2 inch (6 - 12.5 mm) long with 13 - 15 mm wingspan. House flies are dark gray, with four dark stripes down the top of the thorax. They have sponging mouthparts (they cannot bite); house flies can only eat liquids, but they can liquefy many solid foods with their saliva. Reproduction: The complete life-cycle of a house fly takes from 10 to 21 days. On the average, 12 generations of house flies can be produced in one year. Adult females lay 120-150 tiny white eggs, usually in manure or other warm, moist, decaying organic matter. A female lives for about 2 1/2 months and can lay up to 1,000 eggs in her short life. The eggs are only about 0.04 inch (1 mm) long and hatch into white, worm-like maggots in about 12 hours. The maggots grow to be about 1/2 inch (12.5 mm) long. When they are this big, they burrow into the ground to pupate. An adult will emerge in about 5 to 6 days (in warm weather) or about a month (in cold weather). Disease Carrier: The House Fly is often a carrier of diseases, such as typhoid fever, cholera, dysentery, and anthrax. The fly transmits diseases by carrying disease organisms onto food. It picks up disease organisms on its leg hairs or eats them and then regurgitates them onto food (in the process of liquefying solid food).
Types of Rats By Thomas Morva Rats are rodents that belong to the Rattus genus of the family Muridae. These are the most dominant species on earth. There are several species of rats in the world. Most rodents are herbivorous, but some are omnivorous.
In general,
there are two basic types of rats. They are black or roof rats and Norway or
brown rats.
A fully-grown brown rat is 18 to 26 cm long and
weighs between 400 and 600 gm. They have a tail shorter than its body and their
nose and muzzle are blunt. |
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