How can sawfly larvae typically be distinguished from caterpillars?

Sawfly larvae and caterpillars can be distinguished primarily by the number of prolegs they possess. Sawfly larvae typically have more prolegs than caterpillars; specifically, they commonly have eight or more pairs of prolegs, while caterpillars generally have fewer, usually ranging from five pairs to none. This anatomical difference is a key identifier and allows for easier classification in entomological studies.

While color, habitat, and feeding patterns may vary among both types of larvae, they are not definitive traits that can thoroughly differentiate them. In terms of color, there is significant variation within both groups, making it a less reliable distinguishing factor. Habitat differences can also be inconsistent as both may inhabit similar environments depending on the species and food availability. Feeding patterns can overlap since both may feed on plant material, but this does not provide a robust means of identification since many insects have similar dietary habits.

Overall, the number of prolegs is a reliable and clear-cut method for distinguishing sawfly larvae from caterpillars, making it the most accurate choice in this context.