Biological features of individual phases of the development of unpaired silkworms in Uzbekistan of the walnut fruit zone of the bassen river chirchik (Lymantria Dispar L)

Truss traps based on disparlur allow you to accurately set the start dates for males, to track the entire period of their flight and end. The use of truss traps is necessary for monitoring the appearance of outbreaks of mass reproduction of unpaired silkworms in walnut stands. In the conditions of the Tashkent region, the Chirchik river bassin in walnut-fruit stands, the development of caterpillars from the moment of their birth to pupation took 55–61 days. A biometric analysis of pupae of males and females revealed that the weight categories can fluctuate significantly and an increase in the proportion of pupae with the smallest weight, both in females and males, shows that the studied population of unpaired silkworm has entered the attenuation phase. The timing of the development of the caterpillars depends on the species of fodder trees.