Summer season arrives this week and with it a number of the most lovely flying bugs you’ll encounter in North America.
Not the butterflies (after all they’re lovely), however relatively the dragonflies and damselflies. I’ve seen the occasional dragon and dragonfly for fairly a while now, however by the stream that flows behind the home, I bumped into my first massive flight of ebony jewel damselflies this previous week and knew that summer time was lastly right here.
The Ebony Jewel Wing (Calopteryx maculata) is a big damselfly typically discovered alongside shady riverbanks. The male has a superb iridescent physique which, relying on the sunshine, can seem inexperienced or blue with massive strong black (ebony) wings.
The females are extra subdued, however no much less lovely, with brownish our bodies and smoky wings with a white rectangular spot (the pterostigma) on the entrance (therefore the species identify “maculata” that means mottled). These massive, darkish wings are their most distinguishing characteristic, the rationale for the genus identify given to this group, Calopteryx, that means ‘lovely wing’. Ebony jewelwings even have a reasonably distinctive fluttering flight, with not as a lot zooming as different dragons and damselflies. It could actually generally be mistaken for that of a butterfly.
Damselflies belong to the identical order as dragonflies, the Odonata, a phrase derived from two Greek phrases that means “toothed jaw.” Because the identify suggests, these animals are fierce predators. They do not chew people, however are a few of our most well-known mosquito predators, each within the water and within the air.
The fry are aquatic, hatched from eggs laid on underwater vegetation throughout the summer time. They hibernate of their aquatic kind and climb out of the water as they rework into their grownup flying kind. The larvae are sometimes on the prime of the aquatic meals chain, particularly when bigger fish usually are not current, and so are vital for controlling mosquito larvae populations. This is likely one of the the reason why mosquitoes typically breed extra efficiently in small, standing swimming pools of water, resembling mosquitoes that collect in previous tires or buckets with out predators of damsels and dragonflies. The adults patrol the air and seize bugs as they fly.

How do you distinguish a dragonfly from a dragonfly? Dragonflies unfold their wings at relaxation and have eyes linked excessive of their heads like glasses. Damselflies have broadly spaced, separate eyes and maintain their wings collectively above their our bodies when at relaxation. An exception are the spreading damselflies (in nature there are all the time exceptions), these hold their wings open when resting. Dragonflies are normally bigger and fleshier than damselflies. Though the ebony jewelwing with a size of two inches is bigger than many dragonflies. His physique is slimmer and extra delicate.
Should you discover ebony jewelwings by a stream, it is enjoyable to look at them work together. Damselflies are short-lived, dwelling within the grownup kind for 2 to 4 weeks, and mating. Males defend territories alongside slow-flowing streams and can carry out courtship shows resembling hovering for perched females, or perching for females holding the hindwings down, perpendicular to the bottom, lifting the forewings and hindquarters, forming a “crucifix.” These shows are regarded as meant to attract consideration to its wings. Females are extra doubtless to decide on dark-winged males to mate with as a result of extra wing pigment correlated with bigger our bodies, extra fats reserves, and stronger immune capabilities, permitting the males to extra efficiently defend territory alongside streams.
Like different odonates, damselflies mate within the air. Should you see damselflies flying round clinging to one another, that is what you see. The male makes use of particular clamps on the tip of his stomach to carry the feminine by her chest whereas banding them on the stomach. That is known as the wheel place. Though I’ve additionally heard it known as “within the coronary heart” as a result of their physique is heart-shaped. How romantic! Should you see a dragonfly repeatedly dipping her stomach into the water, she’s laying eggs.
Ebony jewelwings will grace our streams and different wetlands for months to return. They’re sufficiently small to go unnoticed, however I discovered, as is so typically true, that after I knew what they had been and the place to search out them, I went from by no means noticing them to seeing them in all places. All it’s important to do is go exterior and look.

Susan Pike, a researcher and instructor of environmental science and biology at Dover Excessive College, welcomes your concepts for future column subjects. She’s on the lookout for readers to ship her the indicators of spring they’re noticing so she will be able to doc them on her web site pikes-hikes.com. Ship your pictures and observations to spike3116@gmail.com. Learn extra of her Nature Information columns on-line at Seacoastonline.com and pikes-hikes.com, and comply with her on Instagram @pikeshikes.