What food does the eighteen-star ladybug eat?

The 18-star lady beetle is a kind of 28-star lady beetle, which belongs to the family Coccinellidae of Coleoptera. The adult is slightly smaller, the forechest dorsal plate has more than 6 black spots, and the black spots at the joint of the two sheath wings are not connected. The four black spots in the second row of the base of the sheath wing are basically on the same line, and the spiny hairs of the larvae are white. Let's take a look at what the 18-star ladybug eats.

What food does the eighteen-star ladybug eat?

The 18-star lady beetle is a herbivorous insect. Adults and larvae peel off the mesophyll on the back of the leaves, leaving only the epidermis, forming many irregular translucent fine grooves, such as the bottom of the ground. they can also eat the leaves into holes or only veins, and in severe cases, the damaged leaves dry up and turn brown, and the whole plant dies. Eggplant fruit and melon strips are often cracked, and the tissue becomes stiff, rough, bitter and unedible.

Are ladybugs beneficial bugs or pests?

Ladybugs are both pests and beneficial insects. There are many kinds of ladybugs, which can be divided into carnivorous ladybugs and herbivorous ladybugs. Adult carnivorous ladybugs will prey on any fleshy and soft insects, and their favorite food is aphids, such as seven-star ladybugs. Most species of plant ladybugs feed on plants of Solanaceae, Cucurbitaceae and Compositae, such as potato ladybug and eggplant 28 lady beetle, which collectively eat eggplant and potato leaves and are regarded as pests.

Control methods of Coccinella octostellata

The main results are as follows: 1. Clean the residual plants in the field in time to reduce the number of overwintering insects.

2. The egg block on the back of the leaf was removed during the peak spawning period, and the plant was slapped by the false death habit of the adult, and the falling worm was killed in a basin.

3. When the hatching rate of eggs in the field reaches 1520%, insecticides can be used to control 80% dichlorvos EC or 90% crystal trichlorfon or 50% malathion EC 1000 times, 50% phoxim EC 1500-2000 times, 2.5% deltamethrin EC or 20% fenvalerate EC or 40% chrysanthemum mixed EC or 40% chrysanthemum horse EC 3000 times, 21% killing EC 6000 times spray.