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On oak/chestnut; yellow/orange on thorax

Representative Images

What on earth are these?! - Caliroa Oak sawfly larvae? - Caliroa sp. - Caliroa Hatched! - Caliroa sawfly larvae - Caliroa sawfly larvae - Caliroa Caliroa larva - Caliroa Larva on red oak - Caliroa

Classification

Kingdom Animalia (Animals)
Phylum Arthropoda (Arthropods)
Subphylum Hexapoda (Hexapods)
Class Insecta (Insects)
Order Hymenoptera (Ants, Bees, Wasps and Sawflies)
No Taxon ("Symphyta" - Sawflies, Horntails, and Wood Wasps)
Family Tenthredinidae (Common Sawflies)
Subfamily Heterarthrinae
Tribe Caliroini
Genus Caliroa
No Taxon On oak/chestnut; yellow/orange on thorax

Remarks

These larvae may be C. quercuscoccinae, C. lobata, or possibly C. fasciata (which is closely related to C. quercuscoccinae and feeds on oak but the larvae have not been described).