Grapevine Epimenis (Psychomorpha epimenis). Clifton 8 Acre Park Late Spring 2008 Posted on June 30, 2008 by Mark Khosravi Not sure what this insect larva is. Thought it might be related to monarchs. Hadn’t seen one like it in the park. UPDATE! Thanks to John White he correctly identified this beast as a Grapevine Epimenis (Psychomorpha epimenis). Thanks John!