Rare black Dybowski hornets
There are 23 varieties of hornets in the world. Unusual can be called a black look. The second name is Dybovsky's hornet. This insect has a number of differences from its relatives. The decline in the population led to the fact that this species was listed in the Red Book.
Content
Description of the species
The body size is from 1,8 to 3,5 cm. In rare cases, it can reach 5 cm. The insect has a black body color and dark wings. Wings come with a blue tint.
There is an ovipositor at the end of the belly. It performs the function of a sting. The difference from relatives lies in the absence of transverse stripes and a completely dark body. There are no yellow spots on the body.
Distribution area
This variety is common in China, Thailand, Korea, Japan. There are very few of them on the territory of the Russian Federation. This species is the rarest among the others. In Russia, it can be found in Transbaikalia and the Amur Region.
Life cycle
The way of life can be called parasitic.
In autumn, the female searches for other people's nests. The female selects the smallest representatives and attacks their uterus, killing it.
The uterus disguises itself as a murdered queen. This is possible due to the release of a special substance. Working individuals consider her the queen. She successfully runs the colony. If there are enough soldiers in the nest, then the female may not achieve her goal, she will not be allowed to take over someone else's place.
The queen lays her eggs either in a newly created nest or one she has entered. After a while, larvae appear. Worker hornets get food for their offspring. The larvae are formed, the mating period begins. After that, some of the individuals die.
Hornet Diet
Adult hornets feed on the nectar of flowers. In search of food, they attack other people's nests. They also prefer berries and fruits. Insects greatly spoil their appearance.
Larvae need animal protein to fully develop. Adult individuals prey on wasps, small bees, flies. After thorough chewing, give the mixture to the larvae. From the larvae, adult insects receive sweet drops that they feast on.
Black hornet bite
The bite is more painful than in most species. The attack of the colony leads to adverse consequences.
- bradykinin;
- histamine;
- antigens;
- formic acid.
- severe throbbing pain;
- cardiopalmus;
- shortness of breath;
- severe itching.
Damage to the nest can provoke an attack. When appearing on the site, you can not affect the hive. It can be eliminated only when the uterus leaves the home.
Hornets can sting repeatedly. Sensitive people may experience swelling of the mucous membrane, headache. In rare cases, Quincke's edema.
First aid for a bite of a black hornet
When adverse effects occur:
- treat the affected area with hydrogen peroxide, potassium permanganate, ammonia. Ammonia is mixed with water in a ratio of 5:1. In the absence of these drugs, they are washed with water;
- apply ice or a heating pad with ice water;
- it is appropriate to use onions, parsley leaves, dandelion juice, plantain leaves;
- drink plenty of water. It is not recommended to consume soda;
- the use of "Cetrin", "Suprastin", "Tavegil" - antihistamines will help. Intramuscular injections will act faster;
- if the swelling increases, then go to the hospital.
Conclusion
This unusual type of hornet is much rarer than the rest. They are distinguished by a dark unnatural color. The bite of a black hornet is quite dangerous and requires first aid.
I see them quite often in Stavropol, especially in the evening when the heat subsides. I haven’t heard of anyone being bitten, but it’s a fact that there are a lot of them here
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7 months ago
Observed in the North Caucasus