The first scientific name is Gryllotalpa (also called Dilagu in Northeast China), which is large and native. The antenna is shorter than the body, the front foot is digging, and there is no ovipositor. Undergraduate insects are commonly known as crickets. Common name Lala, local dog. There are about 50 species known all over the world. There are four known species in China: North China, Africa (it should be the Oriental world, which is found all over the country, usually in the east of Jiangnan), Europe and Taiwan Province Province.

Usually at night, but when the temperature is suitable, you can also exercise during the day. When the relative humidity of soil is 22 ~ 27%, the damage of North China mole cricket is the most serious. When the soil is dry, it seldom moves and is a pest. Adults have phototaxis. When the temperature is between 18 ~ 22℃ in summer and autumn and the wind speed is less than 1.5 m/s, a large number of crickets can be attracted by lights at night. Gryllotals can run backwards, especially in caves. Both adults and nymphs are good at swimming, while females have the habit of protecting eggs and nursing young. Nymphs cannot move independently until they are 4 years old. The occurrence of crickets is closely related to the environment, and they often inhabit plains, light saline-alkali land, low wetland areas along rivers, seas and lakes, especially sandy loam and areas rich in humus.

North China mole cricket has a long life history, 2 ~ 3 years 1 generation. Overwintering with adults and nymphs in the soil, the depth is1~16m. Every hole 1 worm, bow your head. The following year, the temperature rose and began to move, and a tunnel of about 10 cm grew on the surface. African crickets only raise a pile of virtual soil or short tunnels at the top of the cave. June to July is the peak season for spawning, and it is mostly found in sunny, high and dry places near ridges and weirs in light saline-alkali areas. Dozens or more eggs are laid in piles in an egg chamber with a depth of 15 ~ 30 cm. Each insect lays 80 ~ 809 eggs in its lifetime, with an average of 4 17 eggs. The egg period is 10 ~ 26 days. 10 ~ 1 1 month overwinters in 8 ~ 9 instar nymph, overwinters in 12 ~ 13 instar nymph in the second year, overwinters as adults in the third year and lays eggs in June of the fourth year. African crickets are completed in Huanghuai area in about 2 years 1 generation, and in the south of Yangtze River 1 year 1 generation. The spawning habit is similar to that of North China mole cricket, which tends to wet areas and is concentrated near rivers, ponds and ditches. The egg period is 15 ~ 28 days. In Huanghuai area, the adult nymph overwinters at the age of 4-7, the nymph overwinters at the age of 8-9, overwinters as an adult in summer and autumn of the following year, and lays eggs in May-June of the third year.

Distributed in most parts of the country. Location: Jiangsu, Zhejiang, Shandong, Hebei, Anhui, Liaoning and other places.

The second one is not very specific from some of your pictures. .