The Developmental Characteristics for the Head Capsule Width of Monochamus alternatus (Coleoptera: Cerambycidae) Larvae and Determination of the Number of Instars.

The objective of this study was to determine the number of instars of Monochamus alternatus Hope (Coleoptera: Cerambycidae) larvae by comparing their head capsule widths (HCW) published in previous studies, as well as additional laboratory experiments. Larvae of M. alternatus showed repeated molting in the laboratory.