This sawfly larva (Dolerus sp.) sheds it’s exoskeleton while mites that parasitize the larvae move to stay on it.
seen from Canada
seen from China

seen from United States

seen from Malaysia

seen from Malaysia

seen from Malaysia
seen from Germany
seen from Malaysia
seen from United States

seen from Poland

seen from United States

seen from United Kingdom

seen from Japan

seen from United States

seen from United States
seen from Philippines

seen from United States
seen from China

seen from United States

seen from Germany
This sawfly larva (Dolerus sp.) sheds it’s exoskeleton while mites that parasitize the larvae move to stay on it.
Three sawflies on horsetails - I think they are all Dolerus Spp.