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Sawfly Larva - Macrophya simillima

Sawfly Larva - Macrophya simillima
Fontenelle Forest, Bellevue, Sarpy County, Nebraska, USA
June 12, 2013
Found on Giant Ragweed (Ambrosia trifida). Any help on ID would be appreciated. Love the faces on the prolegs.

Moved tentatively

Tenthredinidae, Tenthredininae
Macrophya simillima Rohwer (?). The host helps. The only sawfly recorded from Rudbeckia is this species. I've not seen larvae of the species nor do I know of any pictures or descriptions of the larva. I hesitate to be certain of the species because hosts and larvae of so many of the 40+ species of Macrophya are unknown.

Sawfly Larva
Thanks for revisiting.


Can't tell what it is. Ambrosia is yet to be recorded as a host plant for sawflies.

Correction: on second look, the host plant on this image was Golden Glow (Rudbeckia laciniata). Sorry about that.

Moved from ID Request.

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