Tuesday, September 19, 2023

Larval Stalactites

These critters hanging down as they saw away in unison along Speckled Alder leaf edges are probably Sawfly larvae. It looks as if you can see the munched up green leaves through the skin of some of them! They go through several larval stages and are distinguished from caterpillars (single larval stage only, in moths and butterflies) by having more than 5 pairs of prolegs, and they lack the crochet hook ends to these legs. (Now, will I remember that? I'll try ...)

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