Moth
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| Scientific Classification |
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| Image Description |
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Introduction
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Anatomy
Just like the other members in class insecta, moth is divided into three parts; head, thorax, and abdomen. At its head, there is a pair of antennae which has sensors that allow moth to measure humidity and flight speed. Behind the antennae, the compound eyes are placed. They are large and give wide visual images to moth. Also, it has a long flexible siphoning tube shape of mouth on head. Its mouth is consisted of labrum, maxilla, and labial palp which help to draw the nectar from flowers. In the middle part of its body is thorax. There are digestive tract, muscles and heart. However, moth’s abdomen is made of 10 segments. Digestive, respiratory, excretory, reproductive organs are placed in the abdomen and small openings for respiration are also on it. The most unique features in the class insecta are wings. Especially for moth, it has beautifully colored scales on the both up and bottom part, and they cover the wings. Beneath its wings, it also has 3 pairs of legs for locomotion.
Digestive system
Moth has three parts for digestive system. There are foregut, midgut, and hindgut. The food is sucked by its siphoning mouth and gets moistened by the saliva from the salivary glands. Then the food passes through a esophagus, and stored a moment in the crop. After a short storage, it goes down to the gizzard to be digested. When gizzard opens the valve to get into the midgut, the food continues to go down to stomach. Gastric ceca surrounds the stomach and excretes digestive juices to help digestion. While hindgut absorbs water and salts, and then passes wastes out, major digestion and absorption of nutrients happens in midgut.
Reproduction
Mostly, moths get together only to mate. Males locate the mates either by settling their districts or to fly around to look for the females. Some males' antennae is so sensitive to locate mates from few miles. Once male finds the suitable female, they follow wherever it goes until it stops on the ground. They releases pheromones to get attention from female. When they mate, male moves his antennae, flap his wings, then produces the sperm in a seminal receptacle where female stores the sperm. Courtship is generally very short and brief. Female lays the eggs through the ovipositor(in the last segment of a female's abdomen), which can hatch the fertilized eggs. Their life cycle includes four different stages; egg, larva (caterpillar), pupa, and adult.
Ecology
Other
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References
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