....item......... number.... comparing with prior month
observation:..1,913........+364
species: .............87.............+5
people:..............134..........+30
member:............39.............+4

Though the system indicated total species observed was 87, among which there were 3 ssp not counted. So, the total number of species and subspecies are 90. Those newly added to the project in Aug. are listed as follows,

....TW. Name............................ Taxa ....................................................... Date

-- ...霜白蜻蜓(西里亞種) Orthetrum pruinosum clelia (Selys, 1878) 8/16
87...陽明晏蜓..Planaeschna taiwana Asahina, 1951 .........................8/12
86...隱紋絲蟌..Lestes (Platylestes) praemorsus decipiens Kirby, 1893...8/12
85...蔚藍細蟌..Paracercion melanotum (Selys, 1876)....................... 8/1 (8/9 id)
84...鉤尾春蜓..Lamelligomphus formosanus (Matsumura, 1926)..8/5
83...烏帶晏蜓..Anax nigrofasciatus nigrofasciatus Oguma, 1915.....8/4
(Tsao, 2013)

Those 3 sp. with 2 ssp. but only counted one in the tally are,

Libellulidae...蜻蜓科
.... Orthetrum pruinosum clelia (Selys, 1878) 霜白蜻蜓(西里亞種)
.... Orthetrum pruinosum neglectum (Rambur, 1842) 霜白蜻蜓(中印亞種)

Gomphidae...春蜓科
.... Leptogomphus sauteri formosanus Matsumura, 1926 紹德春蜓(嘉義亞種)
.... Leptogomphus sauteri sauteri Ris, 1912 紹德春蜓(恆春亞種)

Calopterygidae...珈蟌科
.... Psolodesmus mandarinus dorothea Williamson, 1904 中華珈蟌(南台亞種)
.... Psolodesmus mandarinus mandarinus McLachlan, 1870 中華珈蟌(原名、廈門亞種)
(Lin & Yang 2016)

New members joined in Aug are,

....user_id....... date(M/dd)

1. chienjenwang 8/25
2. wshxtd 8/11
3. mojito2 8/5
4. allenlyu 8/4

The research showed there were almost 120 odonate species on the wing in Sept.; the peak is in Jul, when a bit shy of 140 species can be sighted, after the number gradually reduces at about 10 species fewer per month till Oct. Then drastically dropping in Nov. to less than 80. (Yeh, 2009). So, it's still good time to observe Taiwan's odonates in this month. Looking forward to seeing your great observations and good luck!

Reference:

1. Tsao, Mei-Hua 曹美華 2013, The website 台灣蜻蜓 "The Dragonflies of Taiwan". http://taiwandragonfly.blogspot.com/
2. Lin & Yang 林斯正;楊平世 2016, An illustrated identification guide to the Odonata of Taiwan 臺灣蜻蛉目昆蟲檢索圖鑑， Published by TESRI, Nantou, Taiwan 行政院農業委員會特有生物研究保育中心。
3. Yeh, Wen-Chi 葉文琪, 2009 "The Diversity of Taiwan's Odonata Fauna" 「台灣蜻蜓目昆蟲的多樣性」, published by Forestry Research Newsletter 林業研究專訊 Vol. 16 No. 1., Taiwan

edited: 04:33pm, Sept. 1, 2018
03:14am, Sept. 1, 2018

Publicado el 31 de agosto de 2018 a las 05:10 PM por aru