What factor determines which type of insect dominates the cane spider's diet at any given time?

Answer

The local abundance and prevalence of available insects.

As opportunistic feeders, their diet shifts to reflect what is most plentiful nearby; high numbers of house flies in summer will result in flies dominating their intake.

What factor determines which type of insect dominates the cane spider's diet at any given time?
dietspiderarachnidpreycane spider