''Paracercion calamorum'',
the dusky lilly-squatter,
[ is a species of damselfly in the family Coenagrionidae. It has a range that extends from southern far-eastern Russia to ]Japan
Japan ( ja, 日本, or , and formally , ''Nihonkoku'') is an island country in East Asia. It is situated in the northwest Pacific Ocean, and is bordered on the west by the Sea of Japan, while extending from the Sea of Okhotsk in the north ...
, and to India and Indonesia. The nominate subspecies ''P. c. calamorum'' is known from central and eastern China
China, officially the People's Republic of China (PRC), is a country in East Asia. It is the world's most populous country, with a population exceeding 1.4 billion, slightly ahead of India. China spans the equivalent of five time zones and ...
, Korea and Japan
Japan ( ja, 日本, or , and formally , ''Nihonkoku'') is an island country in East Asia. It is situated in the northwest Pacific Ocean, and is bordered on the west by the Sea of Japan, while extending from the Sea of Okhotsk in the north ...
. The subspecies ''P. c. dyeri'' occurs in southern China
China, officially the People's Republic of China (PRC), is a country in East Asia. It is the world's most populous country, with a population exceeding 1.4 billion, slightly ahead of India. China spans the equivalent of five time zones and ...
, Hong Kong, Taiwan, Indonesia, India, Nepal, and Thailand.
Description and habitat
It is a medium-sized damselfly with brown-capped yellowish green eyes. Its thorax is black on dorsum without any or very fine azure blue antehumeral stripes, which are very broad in '' Paracercion malayanum''. Lateral sides of thorax are greenish blue with a fine black line on the upper part of each lateral suture. In old males, all these marks are obscured by bluish white pruinescence. Its wings are transparent and pterostigma
The pterostigma (plural: pterostigmata) is a group of specialized cells in the outer insect wing, wings of insects, which are often thickened or coloured, and thus stand out from other cells. It is particularly noticeable in dragonfly, dragonfli ...
is yellow, framed with heavy black nervures. Its abdomen is azure blue with broad black dorsal marks up to segment 7. Segment 2 has a distinct broad dorsal spot connected narrowly to a fine apical ring. This mark will help to distinguish it from ''Pseudagrion
''Pseudagrion'' is the largest genus of damselflies, damselfly in the family Coenagrionidae,
with over 140 species. Its range includes most of Africa, much of Asia, and Australia. Africa holds most of the diversity with almost 100 species. It has ...
'' species. Segment 10 has a narrow mid-dorsal black streak. Female is dull in colors. Its abdomen is similar to the male. But the lateral ground colour is greenish-yellow and segments 8 and 9 are broadly black on dorsum. Segment 10 is bluish-green. Female also get pruinosed when aged.[
File:Paracercion calamorum sub adult male.jpg, Male (sub-adult), showing all marks
File:Paracercion calamorum sub adult female.jpg, Female (sub-adult), showing all marks
It breeds in stagnant and weedy ponds, resting flat on floating grasses and lotus leaves. Eggs are inserted well within the up-curled rim of the lotus leaf or any other floating vegetation.]
See also
* List of odonates of India
A ''list'' is any set of items in a row. List or lists may also refer to:
People
* List (surname)
Organizations
* List College, an undergraduate division of the Jewish Theological Seminary of America
* SC Germania List, German rugby unio ...
* List of odonata of Kerala
References
External links
*
*
Coenagrionidae
Insects described in 1916
{{Coenagrionidae-stub