Dragonfly and Damselfly
inventory of odonata (dragonflies and damselflies) at gateway national recreation area
Thirty-seven odonate species were recorded across 38 sites surveyed at Gateway National Recreation Area (GATE) during 2004 and 2005. Two of these species are state listed in New York, Needham's skimmer (Libellula needhami) and Rambur's forktail (Ischnura ramburii). Of the three National Parks in New York and New Jersey surveyed for odonates during 2004 and 2005 (Fire Island National Seashore, Sagamore Hill National Historic Site, and GATE), GATE showed the greatest species richness and number of sites with odonate species. The most abundant odonate species at GATE were familiar bluet (Enallagma civile), blue dasher (Pachydiplax longipennis), citrine forktail (Ischnura hastata), and swamp darner (Epiaeschna heros). Overall, GATE contains several marshes and coastal ponds that contained permanent water and emergent vegetation and supported odonate breeding. In addition to supporting breeding odonates, several sites at GATE offered good foraging habitat and cover for migrating odonates. report (3.3 MB) mirror
Jamaica Bay Resources Library Collection
DAMSELFLIES AND DRAGONFLIES OF SOUTHERN NEW YORK.pdf source
Familiar Bluet (Enallagma civile) is a common blue damselfly. Males are light blue with black bands and stripes. Familiar Bluet is among the bluets that have a lot more blue than black, particularly on the 3rd abdominal segment, which helps to separate it from another very common bluet, Tule Bluet. Female bluets are quite variable; can be blue, olive, tan or whitish. This one here is washed with turquoise and olive.
Familiar Bluets oviposit in tandem (a picture found on Web), with the female depositing eggs below the surface of a quiet backwater while the male hovers overhead, holding her by the back of the "neck."
Picture of Familiar Bluets mating found on Web. More here or mirror. More about dragonfly or damesfly sex: <1> - mirror ; <2>
豆娘很像蜻蜓，但体型比蜻蜓小，颜色丰富多彩，但蓝色似乎最为常见。
蓝蜻蛉 (Bluet) - 不是平淡乏味的蓝色，而是从深钴蓝色到珠宝蓝绿色的丰富鲜明的蓝。心斑绿蟌也叫蓝豆娘，据说它们是 "最蓝的蜻蛉"。
http://www.hudong.com/wiki/%E8%93%9D%E8%B1%86%E5%A8%98
蓝豆娘是属于蜻蜓目的昆虫，体色属纯粹的天蓝，看上去十分娇弱，但实际上非常健壮，适应环境的能力也比较强，可以在温度零下30度的北极区域存在，如北极的挪威、芬兰。成年的蓝豆娘经常以生活在植物上的小昆虫为食。它们将卵产在水生植物的茎中。而幼虫通常要在水下呆一年左右。蓝豆娘头部、尾部颜色都是蓝黑色的。头部有蜻蜓特征，尾部修长。
蓝豆娘-生活习性
蓝豆娘
蓝豆娘，体形十分娇小，只有缝被子的针那样粗，长度只4-5厘米，蓝豆娘的体色属世上最纯粹的天蓝，比蓝翠鸟莹彻的蓝色还蓝，晶明冰洁。
夏天和秋天，在湖泊、沼泽边的灌木草丛中，能找到蓝豆娘的踪影，它们一般在早上和傍晚出来活动，中午的时候很难找得到它们。
蓝豆娘-与蜻蜓区别
蜻蜓与蓝豆娘都是蜻蜓目的昆虫。蜻蜓大一些，一班是黄色，红色，花色，铁色，蓝豆娘小一些，细细的，袅袅婷婷地象一个瘦长的姑娘动。蜻蜓与蓝豆娘最大的区别就是体息的时候晴蜓的翅膀是放在身体两旁，而蓝豆娘是叠起束放在背上。
Dragonfly: Hind wings broader than front wings.
Stout-bodies, wings always held outstretched.
Damselfly: Front and hind wings similar, narrow at base.
Slender-bodied, wings held clasped above the body or at an angle.
Nice picture at:
http://tupian.hudong.com/a2_23_42_01300000010387124226425781122_jpg.html
在交尾期間，雄性扣住雌性的頸部，而雌性彎曲身體，與雄性的繁殖器官接合。
http://www.npwrc.usgs.gov/resource/distr/insects/dfly/ny/toc.htm
Dragonflies and Damselflies 豆娘 (Odonata) of the United States
- Odonata of New York
Eastern Red Damsel (Amphiagrion saucium)
Blue-fronted Dancer (Argia apicalis)
Variable Dancer (Argia fumipennis)
Powdered Dancer (Argia moesta)
Blue-tipped Dancer (Argia tibialis)
Dusky Dancer (Argia translata)
Aurora Damsel (Chromagrion conditum)
Subarctic Bluet (Coenagrion interrogatum)
Taiga Bluet (Coenagrion resolutum)
Rainbow Bluet (Enallagma antennatum)
Azure Bluet (Enallagma aspersum)
Double-striped Bluet (Enallagma basidens)
Boreal Bluet (Enallagma boreale)
Tule Bluet (Enallagma carunculatum)
Familiar Bluet (Enallagma civile)
Northern Bluet (Enallagma cyathigerum) 心斑綠蟌 (or called Common Blue Damselfly in Europe) http://en.wikipedia.org/wiki/Enallagma
http://zh.wikipedia.org/zh-hk/%E5%BF%83%E6%96%91%E7%BB%BF%E8%9F%8C
在交尾期間，雄性扣住雌性的頸部，而雌性彎曲身體，與雄性的繁殖器官接合。豆娘伴侶一起飛過水麵，並把卵產在水面下合適的植物上。
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心斑綠蟌 |
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Turquoise Bluet (Enallagma divagans)
Atlantic Bluet (Enallagma doubledayi)
Big Bluet (Enallagma durum)
Marsh Bluet (Enallagma ebrium)
Stream Bluet (Enallagma exsulans)
Skimming Bluet (Enallagma geminatum)
Hagen's Bluet (Enallagma hageni)
New England Bluet (Enallagma laterale)
Little Bluet (Enallagma minusculum)
Scarlet Bluet (Enallagma pictum)
Pine Barrens Bluet (Enallagma recurvatum)
Orange Bluet (Enallagma signatum)
Slender Bluet (Enallagma traviatum)
Vesper Bluet (Enallagma vesperum)
Citrine Forktail (Ischnura hastata)
Lilypad Forktail (Ischnura kellicotti)
Fragile Forktail (Ischnura posita)
Furtive Forktail (Ischnura prognata)
Rambur's Forktail (Ischnura ramburii)
Eastern Forktail (Ischnura verticalis)
Sphagnum Sprite (Nehalennia gracilis)
Southern Sprite (Nehalennia integricollis)
Sedge Sprite (Nehalennia irene)
Coenagrion is a genus of damselfly in family Coenagrionidae, commonly called the Eurasian Bluets (although three species are found in North America, C. angulatum, C. interrogatum, and C. resolutum[1]).
http://en.wikipedia.org/wiki/Coenagrion
Coenagrion angulatum = Prairie Bluet
http://talkaboutwildlife.ca/profile/index.php?s=709
Enallagma is a genus of damselflies in the family Coenagrionidae commonly known as bluets.
http://en.wikipedia.org/wiki/Enallagma
Green Darners (genus Anax)
1. Common Green Darner (Anax junius) : 3.0 in., the most common and
widespread Darner. Giant Darner of southwest appears twice as large in
flight.
2. Giant Darner : male 4.3 in., female 3.7 in. Southwestern, uncommon.
3. Comet Darner : 3.2 in., eastern, uncommon.
4. Amazon Darner : 2.8 in., rare stray to south.
It is a Darner. More More More
Blue Dasher (Pachydiplax longipennis) skimmer
1. Id a skimmer
2. Blue Dasher (藍額疏脈蜻 ,
Brachydiplax
chalybea flavovittata ) in
HK
藍額疏脈蜻的身軀主要由藍、黃、黑三種顏色組成，並有一對綠色的大眼睛，顏色對比鮮明。藍額疏脈蜻通常活躍於池塘和沼澤的草叢，偶然亦會在沿岸地區出沒。
廣泛分布於本港沼澤和野草叢生的池塘. Global Distribution : 中國（包括廣東、廣西、海南及台灣）、日本及越南。
3. Both Pachydiplax & Brachydiplax are skimmers.
Nice close-up found on Web: http://www.birdseyesandbutterflies.com/category/dragonflies
White-faced Meadowhawk
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Rudy Meadowhawk
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Yellow-legged Meadowhawk
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Yellow-legged Meadowhawk
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