It is inferred that the life history of this species is like that of some other narrow-winged damselflies in the family Coenagrionidae.

Flying earwig Hawaiian damselfly adults are weak flyers.

Females may lay eggs on wet banks or in leaf litter near seeps.

[9] They have three flattened abdominal gills for breathing, and they feed on small aquatic invertebrates or fish.

For the rest of their life, which usually ranges from a few weeks to several months, they live close to the aquatic habitats and breed there.

[10] Yet, a few other species, including the flying earwig Hawaiian damselfly, have terrestrial or semi-terrestrial immatures.

[2] Using the diet of narrow-winged damselflies as a reference, scientists suggest that the flying earwig Hawaiian damselfly adults prey on small insects such as flies, mosquitoes, and moths.

[15] Breeding of the flying earwig Hawaiian damselfly takes place in leaf litter or damp banks near streams.

When foraging while flying, the adult damselflies use their spiny legs to form a basket to capture prey.

Flying earwig Hawaiian damselfly adults prefer moist areas as habitats.

These include wet ridges, forest understory, and steep, fern-covered damp banks.

The naiads are believed to live in terrestrial or semi-terrestrial areas, but have never been observed or found.

Flying earwig Hawaiian damselflies are sensitive to temperature changes.

They seldom go out on cold and rainy days, while being more active in warm sunny weather.

[16][17] The flying earwig Hawaiian damselfly used to be found on the tropical islands of Hawaii and Maui.

In the past, the flying earwig Hawaiian damselfly was on the islands of Hawaii and Maui.

Surveys within suitable habitats in the Kau and Olaa areas from 1997 to 2008 did not find any of the species.

[19] On Maui, the damselfly was historically reported from five general locations on the windward side of the island.

Stream modifications and diversions could change the surrounding flora, fauna, and prey availability.

Finally, the overcollection of individuals, especially breeding adults, threatens the damselfly population.

Megalagrion Nesiotes requires systematic surveys and continuous population monitoring.

Major strategies include the restoration and protection of species-specific habitats.

Suitable habitats for Megalagrion Nesiotes are protected and all significant threats are under control.