Orthetrum sabina (Drury, 1770) 杜松蜻蜓/狭腹灰蜻

About Dru Drury (1725-1804) :

Unlike the majority of the eminent natural historians of his time, the English entomologist Dru Drury (1725-1804) was not trained as a physician. After working 40 years as a silversmith, Drury retired in 1789 to devote his energies full time to his beloved insects, amassing one of the largest collections in Britain at over 11,000 specimens.

Drury's three volume Illustrations of natural history is particularly noted for its exquisite hand colored plates, which display a notable artistic, as well as scientific, aspect

Found in Asia: China, Caucasus, Guandong, Guangxi, Hong Kong, Hainan, Indonesia, India, Japan, Kazakhstan, Lao, Sri Lanka, Myanmar, Malaysia, Philippines, Peninsular Malaysia, Russian Federation, Thailand, Taiwan, Viet Nam
 
Genus : Orthetrum Super-Family: LIBELLULOIDEA Family: LIBELLULIDAE

In the same Genus Orthetrum | Orthetrum chrysis  | Orthetrum glaucum Orthetrum sabina   |  Orthetrum testaceum   |


Orthetrum sabina 杜松蜻蜓

Orthetrum sabina 杜松蜻蜓

Male ♂
body length = 51mm
hind wing span = 74mm


Female ♀
body length = 53mm
hind wing span = 77mm
 

eggs

Ref: Page 97 of DRAGONFLIES OF PENINSULAR MALAYSIA AND SINGAPORE by A.G. Orr


Orthetrum sabina are found everywhere. They show very friendly behaviour and even pose to take photograph at any angle.

They do not show much sexual dimorphism, so that, it is not easy to distinguish between the males and females at one glance.


Male (above) and Female (below). 

Orthetrum sabina are difficult to identify  male and female without a close look at section 2 of the ball shaped abdomen. Both male and female are similar in pale yellowish green pattern.


Hello World !

More detail images....


D rowning

Detail in photos.....


1-3節特別膨大 如球状

3節後突然變細

只有7-10節 稍微再膨大, 黑色較粗


狭腹灰蜻 (杜松蜻蜓)  Orthetrum sabina (Drury,1770)

雄蟲複眼律色或深綠色,胸部綠色或黃綠色,側視具6條散亂的黑色斑紋,

雌蟲外觀近似雄蟲,可從尾毛的構造分別。

复眼为墨绿色,

生活於低中海拔山區,常見於水田、池塘、沼澤等水域活動,環境適應能力佳,為優勢的種類,數量很多。

 


本屬有10種 :    
  金黃蜻蜓  
  杜松蜻蜓  
  鼎脈蜻蜓  
  灰黑蜻蜓  
  呂宋蜻蜓  
  霜白蜻蜓(西里亞種)  
  霜白蜻蜓(中印亞種)  
  扶桑蜻蜓  
  赭黃蜻蜓  
  白刃蜻蜓  

雄蟲胸部為黃綠、黑色相間條狀斑;腹部黑色,具白色斑紋。雌雄差異不明顯。

本種是平地及中低海拔極常見的種類。成蟲出現在山溝、水田、池塘、沼澤等各類靜水環境,幾乎隨處可見。

生 性 兇 猛 , 會 捕 食 與 自 己 體 型 相 約 的 同 類


雄蟲複眼墨綠色。胸部底色為 淡綠色,側視有 六條黑斑。


顏色黑綠相雜第4─6節突然變得非 常 細長 (以此特徵可輕易與同屬其他種 區分) ,為黑底具白斑,

雌蟲外觀與雄蟲相似。未熟成蟲胸部底色呈黃色。

生態  成蟲出現於3一 11月,廣泛分布於中 海拔以下各地和蘭嶼,成蟲活動的範圍相當廣泛,沒有 水域的地區仍然可見稚蟲棲息於水田、池塘、沼澤、湖泊、 田溝等各類靜水域為生環境中。


複眼墨綠色,胸部以淡綠色為底色,側視具六條黑斑,翅透明,腹部為黃、綠、黑、白相混雜。 分布於中、低海拔或蘭嶼綠島,成蟲出現月份為4-12月。成熟的雄蟲經常在棲息環境水域邊的枝條或石塊上佔據領域,遇到同種雄蟲或其他體型相近的種類會發生追逐爭鬥的情形。


 

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