Scientific name Locusta migratoria L. ph.solitaria Orthoptera, Acridoidea. Alias ​​is a diaspora type of Asiatic locust, locust, leech, and green head. Located in the northern part of China, it starts from Heilongjiang, Jilin, and Dongjing 110 in the east. It gradually increases westward, and west to Inner Mongolia and Xinjiang.
Host various vegetables and crops, pasture, etc.
The characteristics of adult insects and nymphs damage the leaves, affecting the growth of crops and reduce the value of vegetable products.
The morphological characteristics of adult body length 40-53mm, head, chest and hind leg leg green, the remainder is brown; the prominence of the midline of the thoracodorsal arch uplift. Egg length is about 6mm, width is about 1.3mm, long oval, slightly curved in the middle, the back end is thick, with a circle of micropores (fertilization holes). Initially producing pale yellow to red meat, the growth of water during development is pale grayish yellow. Eggs are slanted into egg pieces and wrapped in capsules. Nymphs are called cockroaches, a total of 5 instar: 1 instar nymph antennae 13-14 section, wing buds are not obvious; 2 instar nymph antennae 18-19 section, the front of the thoracodorsal posterior edge arches backward, wing buds more significant, Rounded at the end and slanted backward; 3rd instar nymph antennae 20 to 21 knots, arched at the trailing edge of the anterior thoracic plate, narrow and long forelimbs, slightly triangular buds in the hind wings; 22 to 23 knots of 4th instar nymphs. The posterior edge of the thoracodorsal posterior arch arches into a triangular shape with wing buds extending to the second abdominal segment. The antennae of the fifth instar nymph are 24-25 knots. The posterior edge of the anterior thoracic spine arches out very clearly and the wing buds are very large. The first 4 - 5 abdominal section.
Life habits Northeast, Northwest, and North China One generation a year, eggs winter in the earth. From June to September, scattered farmland sporadic damage.
The prevention and control methods do not take preventive measures alone. In the event of a major occurrence, see East Asian migratory locusts or aircraft control.
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