Etiology: Caused by parasitoids of the nymphs.

Symptoms: On the body surface of the mole, the limbs, the back neck and even the head have a cluster of floe with yellow or khaki yellow. It is not as soft and elegant as the water mold, and is somewhat hard-finished. In severe conditions, the limbs are brown or copper green. A small amount of parasitism has no effect on cockroaches. When a large amount of parasites are parasitized, it can affect the actions of cockroaches, feeding or even breathing, causing the cockroach to shrink and die.

Prevention:

1) Disinfection by sprinkling before and after the use of 0.5ppm "fish killing fish" and 5 ~ 10ppm potassium permanganate at the time of onset;

2) Sprinkle the entire pool with 3ppm "Pest 2";

3) Pay attention to the water should not be too fat, keep the water fresh.

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Shandong Shengli Bioengineering Co., Ltd , https://www.shenglipharm.com