The photo was taken by Yixin Chen (iNaturalist ID: phoenix-valkyrie) on April 14th 2019, in Mt. Gaoligong National Nature Reserve, Pianma Region, Nujiang Prefecture, Yunnan Province, China, during the long-term field surveys (since May 2013) for Myanmar or black snub-nosed monkeys (Rhinopithecus strykeri).
Male Calopteryx maculata
A stunning male with blue iridescence held what, to my eyes, was the most desirable territory in the small creek.
A female Giant Ichneumon wasp (Megarhyssa macrurus) oviposits into the side of a tree.
I was honored to have this observation selected as observation of the day for June 11, 2020, and again as observation of the week (week of June 21, 2020). It is covered in this blog post: A Trip to Texas Provides a Long Sought Photographic Opportunity - Observation of the Week, 6/21/20.