Coenagrion ornatum, or, the ornate bluet, is a species of damselfly from the family Coenagrionidae distributed across a large part of Europe and Western Asia.[2][3]
Adults reach 30 to 31 mm, of which 20–30 mm abdomen, while wingspan is 17–24 mm. The base coloration is blue with black markings, similar to other coenagrionids. Male can be distinguished by a marking on the top of the second segment of the abdomen (S2) which resembles a stalked wine glass or a trident, but is not always developed. Other segments up to S7 sport pointed markings resembling spears, while the eighth segment is entirely blue with at best two tiny black spots. Females have darker abdomens, but with always some blue on the proximal half of each segment; this characteristic resembles brighter azure damselfly females, which can be distinguished by three forward-pointing black spires (ornate bluet females only have the central one).[4] Males in turn closely resemble the southern damselfly males, from which they can be distinguished by serrated hind edges of eye-sports on the top of the head and details in abdomen markings.[3]
The period of activity is short: adults fly in the summer, from May to July or mid-August.[2][4]
The species breeds in shallow, unshaded, slowly-flowing streams with moderate growth. It is absent from water bodies with densely overgrown banks. Most of the known localities in Europe are along ditches in agricultural areas where people regularly mow the banks and clean the bottoms.[2]
The Balkans represent the central area of distribution, with but a few larger isolated populations to the west, specifically in Danube river valley in Bavaria, and in central France.[2] Thus, it is regarded eastern counterpart of the southern damselfly. Ranges of the two species overlap in Central Europe.[3] Ornate bluet is moderately common in the Balkans, even though the populations are relatively small. Water pollution is causing noticeable decline in other parts of Europe. Distribution range extends east across Anatolia and Iran to south-eastern Turkmenistan, where it inhabits higher altitudes, whereas lowlands are too dry for its survival. It is also absent from Mediterranean islands.[2]
Coenagrion ornatum, or, the ornate bluet, is a species of damselfly from the family Coenagrionidae distributed across a large part of Europe and Western Asia.
Coenagrion vanbrinkae is een libellensoort uit de familie van de waterjuffers (Coenagrionidae), onderorde juffers (Zygoptera).[2]
De soort staat op de Rode Lijst van de IUCN als onzeker, beoordelingsjaar 2004, de trend van de populatie is volgens de IUCN dalend.[1]
De wetenschappelijke naam van de soort is voor het eerst geldig gepubliceerd in 1993 door Lohmann.
Bronnen, noten en/of referenties
Coenagrion vanbrinkae – gatunek ważki z rodzaju Coenagrion należącego do rodziny łątkowatych.
Coenagrion vanbrinkae – gatunek ważki z rodzaju Coenagrion należącego do rodziny łątkowatych.
Coenagrion vanbrinkae là một loài chuồn chuồn kim trong họ Coenagrionidae.[1]
Loài này được xếp vào nhóm loài thiếu dữ liệu trong sách Đỏ của IUCN năm 2004, de trend van de populatie is volgens de IUCN dalend.
Coenagrion vanbrinkae được miêu tả khoa học năm 1993 bởi Lohmann.
Coenagrion vanbrinkae là một loài chuồn chuồn kim trong họ Coenagrionidae.
Loài này được xếp vào nhóm loài thiếu dữ liệu trong sách Đỏ của IUCN năm 2004, de trend van de populatie is volgens de IUCN dalend.
Coenagrion vanbrinkae được miêu tả khoa học năm 1993 bởi Lohmann.
Coenagrion vanbrinkae
Lohmann, 1993
Стрелка Ван Бринка[1] (лат. Coenagrion vanbrinkae) — вид стрекоз семейства стрелки (Coenagrionidae).
Длина 30—31 мм, брюшко 20—27 мм, заднее крыло 18—20 мм. Брюшко длинное и тонкое[1]. Крылья прозрачные с узкой птеростигмой, равной 1 ячейке, одноцветная. Внешне сходен с Стрелкой украшенной (Coenagrion ornatum).
Время лёта: начало мая — середина августа. Встречается по небольшим ручьям и ключевым болотцам с богатой растительностью[1]. Личинки встречаются в водоёмах с богатой водной и околоводной растительностью. Яйца откладываются самками на нижнюю сторону плавающих и погруженных в воду листьев водных растений. Самец сопровождает самку при откладывании яиц.
