Stock: This stock is a conveyor that represents the number of eggs that will develop into adult beetles in 6 weeks. This conveyor represents a 1 week time period.

Flow in: This flow represents the number of eggs going into the stock "eggs hatching 4".

Flow out: This flow represents the number of eggs or larva going out of the stock "eggs hatching 4". These will flow into the "eggs hatching 3" stock to remain for another week in the development of the egg into an adult.

Converter: This converter is the percentage of eggs laid that will develop into adult beetles in 6 weeks. 1% of the eggs laid that survive to become an adult will emerge in 6 weeks.

Stock: This stock is a conveyor that represents the number of eggs that will develop into adult beetles in 5 weeks. This conveyor represents a 1 week time period.

Flow in: This flow represents the number of eggs going into the stock "eggs hatching 3".

Converter: This converter is the percentage of eggs laid that will develop into adult beetles in 5 weeks. 13% of the eggs laid that survive to become an adult will emerge in 5 weeks.

Flow out: This flow represents the number of eggs or larva going out of the stock "eggs hatching 3". These will flow into the "eggs hatching 2" stock to remain for another week in the development of the egg into an adult..

Stock: This stock is a conveyor that represents the number of eggs that will develop into adult beetles in 4 weeks. This conveyor represents a 1 week time period.

Flow in: This flow represents the number of eggs going into the stock "eggs hatching 2".

Converter: This converter is the percentage of eggs laid that will develop into adult beetles in 4 weeks. 71% of the eggs laid that survive to become an adult will emerge in 4 weeks.".

Flow out: This flow represents the number of eggs or larva going out of the stock "eggs hatching 2". These will flow into the "eggs hatching 1" stock to remain for another week in the development of the egg into an adult..

Stock: This stock is a conveyor that represents the number of eggs that will develop into adult beetles in 3 weeks. This conveyor represents a 1 week time period.

Flow in: This flow represents the number of eggs going into the stock "eggs hatching 1".

Converter: This converter is the percentage of eggs laid that will develop into adult beetles in 3 weeks. 15% of the eggs laid that survive to become an adult will emerge in 3 weeks.".

Flow out: This flow represents the number of eggs or larva going out of the stock "eggs hatching 1". These will flow into the "larva stage" stock to remain for another week in the development of the egg into an adult.

Stock: This stock is a conveyor that represents the number of larva and pupa that will develop into adult beetles in 1 weeks. This conveyor represents a 1 week time period.

Flow out: This flow represents the number of emerging adults going out of the stock "larva stage" flowing into the stock "attacking adults".

Converter: This converter is the percentage of the adult beetles that will survive as it emerges from one tree and attempts to attack again. Some of the factors that affect the between tree survival rate are temperature and the distance between trees.

Stock: This stock is a conveyor that represents the number of attacking adults. This conveyor represents a 1 week time period.

Flow in: This flow represents the number of adults reemerging after 1 week to attack again. 86% of the adults reemerge and attack again the next week.

Flow in: This flow represents the number of adults reemerging after 2 week to attack again. 14% of the adults reemerge and attack again in 2 weeks.

Flow out: This flow represents the number of adults that stay in the tree after the first week. This number flows out of the stock "attacking adults" and will flow into the "adults emerging after 2 weeks" stock to remain for another week.

Stock: This stock is a conveyor that represents the number of adults beetles that did not reemerge during the first week. This conveyor represents a 1 week time period.

Flow out: This flow represents the number of adults that will not reemerge to attack again.

Converter: This converter represents the number of females adults that develop from an egg to an adult. This is the number per attacking female adult.

Converter: This converter represents the number of eggs that are laid by the attacking adults.

Converter B: This converter changes the amount of stuff going into "Flow out".