Sedge Sprite

nehalennia irene

The Sedge Sprite (Nehalennia irene) is an exceptionally small and delicate damselfly belonging to the pond damselfly family, Coenagrionidae. Widely distributed across northern North America, this miniature insect is renowned for its brilliant metallic coloration and its secretive lifestyle among dense shoreline vegetation. Unlike larger, more conspicuous dragonflies that patrol open waters, the Sedge Sprite prefers to dwell deep within the protective microforest of sedges, rushes, and grasses bordering wetlands. This species is a reliable bioindicator of healthy, undisturbed wetland ecosystems, requiring clean, still water and rich vegetative structures to complete its life cycle. Watching these tiny sprites hover delicately among grass blades provides a fascinating glimpse into the complex, highly adapted world of wetland insects.

生息地: Found in densely vegetated wetlands, particularly sedge meadows, fens, bogs, and the quiet edges of marshes and slow-moving streams.

外見

A diminutive damselfly, the Sedge Sprite measures only 2.0 to 2.7 cm in length, with a wingspan of about 2.5 to 3.0 cm. It is easily identified by its metallic bronze-green thorax and abdomen, which shimmer brightly in direct sunlight. The lower sides of its thorax are a contrasting pale yellow or green, and the tip of the abdomen features striking blue markings, particularly on segment 8, which has a distinct blue patch with small black dots. Its wings are clear and narrow, held folded over its back when at rest, and its eyes are large, rounded, and a deep greenish-blue.

界Animalia門Arthropoda綱Insecta目Odonata科Coenagrionidae属Nehalennia

Sedge Sprite

カテゴリ

昆虫

レア度

Common

危険度

1/5 · 非常に低い

スナップ

最初にスナップしよう！

おもしろい事実

During mating, the male uses special claspers on his abdomen to hold the female by her prothorax, forming a heart-shaped mating wheel in the grass.

It is one of the smallest damselflies in North America, often overlooked due to its tiny size and habit of staying deep in the grass.

Unlike many dragonflies that migrate or fly long distances, Sedge Sprites rarely travel more than a few dozen meters from their natal wetland.

特殊能力

Flies low and deep within dense sedge grasses to escape strong winds and evade larger aerial predators.

Possesses a metallic green cuticle that reflects surrounding vegetation, making it nearly invisible when perched.

Females exhibit different color morphs, including a male-like andromorph, to reduce excessive mating harassment.

サイズと詳細

長さ: 2-3 cm
翼開長: 2-3 cm
体重: 0.00002-0.00008 kg
寿命: 1 年
Top Speed: 8 km/h
一度の産卵数: 100-250
抱卵期間: 10-21 日

食性と食事

As both aquatic nymphs and aerial adults, Sedge Sprites are voracious predators that feed on a variety of small soft-bodied insects.

年齢による違い: Nymphs are aquatic predators feeding on microcrustaceans and small insect larvae, while adults hunt flying insects in terrestrial vegetation.