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One-horned fairy|two-pronged rhinoceros beetle

2022-03-22 / 227 Read

The introduction of unicorns

One-horned fairy, the scientific name is double-forked rhinoceros beetle, also known as The worm , its larvae are also known as chicken female worms [grubs], which are large and mighty. Unicorns are common in some parts of China, and large numbers may harm forests. In terms of use, unicorns can be used for ornamental purposes, are common pets, and Has high medicinal value. In 2008, researchers found that unicorns change color under different conditions, which has implications for the study of smart materials.

The unicorn is a large beetle common in some places, such as Taiwan. It is the largest type of beetle in Taiwan. For Insecta - Coleoptera - Rhinoceros beetles. Unicorns are beneficial insects and can also be pests. Appropriate amounts will not cause forest damage; and if the number is too large, adults will cause serious damage to trees. The unicorn is famous for its majestic and powerful single horn. Because of its bifurcation at the top of its horn, it is scientifically known as the double-forked rhinoceros beetle in China, commonly known as the unicorn.

Chinese name: two-forked rhinoceros beetle

Latin name: Allomyrina dichotoma

Alternative   names: One-horned fairy, worm, etc.

Binomial: Allomyrina dichotoma Linnaeus

Kingdom: Animalia

Department   : Arthropoda

Class: Insecta

Order : Coleoptera

Family: Scarabaeidae

Subfamily: Dynastinae

Genus: Allomyrina

Species: A. dichotoma

Distribution area: China, Korea, Japan, etc.

Synonym: Trypoxylus dichotomus

unicorns Characteristics

The unicorn is big and mighty. Not including the horns on the head, its body length is 35-60 mm, its body width is 18-38 mm, it is oblong, and its ridges are very arched. The body is chestnut brown to dark tan, and the head is small; the antennae have 10 segments, of which the gills are composed of 3 segments.

Dioecious: males have bifurcated horns at the top of the head, and bifurcated horns at the center of the prothorax. The back is smooth and shiny. The female is slightly smaller in size, with no horns on the head and chest, but the center of the head is raised, with 3 small protrusions in a row, a T-shaped groove in the center of the front of the pronotum, and the back is relatively thick and dark. The three pairs of long legs are powerful and powerful, and each has a pair of claws at the end, which is a powerful tool for climbing.

UnicornsLife Habits

Unicorns appear in large numbers from June to August, with phototaxis, mostly nocturnal In the daytime, it often gathers at the place where the sap of the green oak is flowing, or on the Guangla tree (white chicken oil), and there are often hundreds of unicorns. Find their trail. They mainly feed on sap from tree wounds or ripe fruit, and do not cause harm to crops.

The larvae are often called hen worms, which emerge into adults through the pupal stage, one generation a year. Because this species is not a conservation insect, it is large and robust, so it is often used as children's ornaments and rearing. pets and insect teaching use. The larvae feed on decayed wood, humus, fermented wood chips, and decaying plant matter, so they live in the decayed hearts of trees, sawdust and sawdust piles, manure piles, garbage piles, and even the roofs of thatched houses. Does not harm crops and trees. In the larval stage, the skin peels twice and lasts for 3 instars. The body of the mature larvae is very large, milky white, about the size of an egg, usually curved in a "C" shape, and the body color of the larval stage is brown. Mature larvae pupate in the soil. Before pupation, they will empty their feces and use the feces as a pupa chamber. When rearing, it can be seen from the outside of the vessel that the larvae's pupae are smeared with feces into a layer of dark black. Adults feed on tree sap, and can be fed apples, pineapples, bananas, and low-moisture and high-sugar fruits, as well as special insect jelly.

The feeding method of unicorns

Compared with the feeding of other insects, unicorns are good-looking, fun and easy to raise insects, adults The power is infinite, and it can pull objects dozens of times heavier than the body. Watching his mad and powerful flapping wings can actually push his hard and cumbersome armor to fly into the sky. In addition to being full of shock, he can also be regarded as taking care of the unicorn. a great enjoyment.

The breeding of unicorns is very simple, as long as you have a suitable sized pet Box, put a pair of unicorns into humus with organic matter of rot leaves, plus a rotten tree for unicorns to perch and mate, feed fruit or jelly, and soon there will be unicorns The fairy baby was born. Generally speaking, the life history process of Coleopteran insects belongs to "complete metamorphosis", that is, it must go through four stages: egg, larval stage, pupal stage and adult stage, and each year is one generation. Unicorn larvae live on organic matter in the soil. As the age increases, the larvae's food intake also increases. The final instar larvae are almost as thick as an adult's thumb, and some are larger than the thumb.

Construction of cages

Most of the unicorn cages are made of wood, generally 80cm×60cm×100cm, surrounded by iron yarn or copper yarn. The lower part of the cage is made of a 79cm x 59cm x 30cm drawer with tin, and a live cover is made on the top of the cage, which is convenient for changing the food. The cage of this size can raise 50 pairs of unicorns.

Adult rearing

The captured unicorns were quickly put into pre-made cages for rearing, and placed in the tin drawer under the rearing cages. 10cm of soil (for larvae to pupate), put larvae feed on top of the soil, for adults to lay eggs and larvae to feed, put a feed tray in the cage, and put some low-moisture and high-sugar fruits such as bananas and apples in the tray. For the adults to feed, the unicorns generally caught in August can lay eggs in large numbers day and night. By mid-October, when the larvae basically reach the third age, they can be soaked into commercial products.

Larval rearing

Compost farming method: use 50% weeds and 50% sawdust on the field or the side of the field, and the mixed pile grows 5-10m. The width is 1-3m and the height is about 1m. Then water enough, and cover it with plastic paper to let it ferment. Generally, it can wait until there is no temperature in the compost. The temperature of the fermented mixture is basically constant. It can speed up the growth. This method is a good way for every farmer to easily raise the larvae of unicornis.

Building pond culture method: build ponds on flat ground, each pond is 5-10m2 in size, 60cm deep, fermented feed is laid in the pond, and the thickness is 50cm, and then the eggs or larvae of unicornis are put in. Yes, but it should be noted that the roof of the pool should also be equipped with a rain cover and sunshade equipment.

Wooden box breeding method: use wooden boards to nail into wooden boxes. The size of the box should be determined according to the number of larvae of the unicornus, but it should not be too large, otherwise it will be difficult to move. Put the larvae feed inside, and then put the eggs or larvae in. This method is conducive to multi-layer stacking and easy indoor and outdoor moving.