Several conditions must be met in order to pupate barley insects successfully. The site must be ventilated to prevent sun and rain, and the temperature and humidity must be suitable. The humidity should be 50%-70% at room temperature. Too much humidity is easy to corrode, and too dry will make it difficult to pupate, leading to an increase in deformity rate.
The optimal pupation time of dracunculiasis should be early spring and early summer, during which the pupation rate is relatively high. The pupation of dracunculiasis is complicated, so it is necessary to choose an optimal pupation time and place to improve the success rate of pupation.
Reproductive habit: Adult barley nymph has reproductive ability, and the ratio of male to female in reproductive period is 1: 1. The body color of adults turns black when they are sexually mature, and the size of female adults is obviously larger than that of male adults. It has the habit of constantly mating and laying eggs.
Female insects lay eggs after mating for 2~3 days, and can mate and lay eggs many times. Female insects can continuously lay eggs for more than 250~ 1000. The average spawning period is 90~ 120 days, and the peak spawning period is 10~30 days after emergence. Feed quality has a great influence on egg production.
Barley worms like to live in groups and are suitable for high-density feeding. However, dracunculiasis has cannibalism, which means that adults eat eggs, bite larvae and pupae, and older larvae bite younger larvae or pupae.