Emergence of dragonfly adults.

Dragonfly nymphs in their last instar crawl up the stems of pond plants where the adult emerges . I see many exoskeletons still clinging to the stems:

Dragonfly nymph exoskeleton
2015-08-06dragflynewl copy
Newly emerged dragonfly with one wing not yet inflated.

INSTAR: An instar ( i/ˈɪnstɑr/, from the Latin “form”, “likeness”) is a developmental stage of arthropods, such as insects, between each moult (ecdysis), until sexual maturity is reached. Arthropods must shed the exoskeleton in order to grow or assume a new form. ( Wikipedia)