The emerald cascader[2] or iridescent stream glider[3] (Zygonyx iris)[4] is a species of dragonfly in the family Libellulidae. It is widespread in many Asian countries.[5][1][6]
A number of subspecies of Zygonyx iris have been described, but it is not clear if these merely represent extremes of geographical variation or genuine subspecies.[1][3]
It is a dark metallic blue dragonfly with brown eyes. Its thorax has broad humeral stripe in yellow. Its abdomen is black with sides of segments 1 to 3 broadly yellow. There is a yellow mid-dorsal carina from segments 1 to 6. There is a big yellow spot on segment 7. Female is similar to the male.[7]
It breeds in the swift rocky streams. Larva is adapted to cling on rocks. Females lay eggs in first order streams during summer. Apparently, the larva migrates to second or third order streams during their late instars from where they emerge.[8][7][9][3][2] Males commonly found flying over brooks and streams. They tirelessly fly back and forth across a beat along a hill stream and rarely perch. Sometimes, pairs in tandem can be seen flying above torrents; the female dipping her abdomen periodically to lay eggs[8][7][3]
The emerald cascader or iridescent stream glider (Zygonyx iris) is a species of dragonfly in the family Libellulidae. It is widespread in many Asian countries.
Zygonyx iris is een libellensoort uit de familie van de korenbouten (Libellulidae), onderorde echte libellen (Anisoptera).[2]
De soort staat op de Rode Lijst van de IUCN als niet bedreigd, beoordelingsjaar 2010.[1]
De wetenschappelijke naam Zygonyx iris is voor het eerst geldig gepubliceerd in 1869 door Selys.
Bronnen, noten en/of referenties
Zygonyx iris – gatunek ważki z rodzaju Zygonyx należącego do rodziny ważkowatych.
Zygonyx iris – gatunek ważki z rodzaju Zygonyx należącego do rodziny ważkowatych.
Zygonyx iris là loài chuồn chuồn trong họ Libellulidae. Loài này được Selys mô tả khoa học đầu tiên năm 1869.[1]
Bài viết về họ chuồn chuồn ngô Libellulidae này vẫn còn sơ khai. Bạn có thể giúp Wikipedia bằng cách mở rộng nội dung để bài được hoàn chỉnh hơn.
Zygonyx iris là loài chuồn chuồn trong họ Libellulidae. Loài này được Selys mô tả khoa học đầu tiên năm 1869.
