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Paracercion calamorum

{{Short description|Species of damselfly}}

{{Speciesbox

| image = Paracercion calamorum (Dusky Lilysquatter) male.jpg

| image_caption = Male

| image2 = Paracercion calamorum (Dusky Lilysquatter) female.jpg

| image2_caption = Female

| status = LC

| status_system = IUCN3.1

| status_ref = {{cite iucn |author=Wilson, K. D. P. |date=2009 |title=Paracercion calamorum |volume=2009 |page=e.T164788A5926668 |doi=10.2305/IUCN.UK.2009-2.RLTS.T164788A5926668.en |access-date=20 November 2021}}

| genus = Paracercion

| species = calamorum

| authority = (Ris, 1916)

| synonyms =

  • Agrion calamorus {{small|Ris, 1916}}
  • Argiocnemis dyeri {{small|Fraser, 1919}}
  • Argiocnemis gravelyi {{small|Fraser, 1919}}
  • Coenagrion violacea {{small|Fraser, 1924}}

}}

Paracercion calamorum,{{World Odonata List}} 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, and to India and Indonesia. The nominate subspecies P. c. calamorum is known from central and eastern China, Korea and Japan. The subspecies P. c. dyeri occurs in southern China, Hong Kong, Taiwan, Indonesia, India, Nepal, and Thailand.{{cite book |last1=K.A. |first1=Subramanian |last2=K.G. |first2=Emiliyamma |last3=R. |first3=Babu |last4=C. |first4=Radhakrishnan |last5=S.S. |first5=Talmale |title=Atlas of Odonata (Insecta) of the Western Ghats, India |date=2018 |publisher=Zoological Survey of India |isbn=9788181714954|pages=167–168}}

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 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 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.{{cite journal |last1=Fraser |first1=F. C. |title=Descriptions of four new Indian Odonata |journal=Records of the Indian Museum |date=1919 |volume=16 |pages=451–452 |doi=10.5962/bhl.part.25933 |url=http://faunaofindia.nic.in/PDFVolumes/records/016/07/0451-0455.pdf |accessdate=16 October 2018}}

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.{{cite book|author=C FC Lt. Fraser|author-link=Frederic Charles Fraser|title=The Fauna of British India, including Ceylon and Burma, Odonata Vol. I|publisher=Taylor and Francis|location=Red Lion Court, Fleet Street, London|year=1933|pages=[https://archive.org/details/FraserOdonata1/page/n426 413]–415|url=https://archive.org/details/FraserOdonata1}}{{cite book|author=C FC Lt. Fraser|author-link=Frederic Charles Fraser|title=A Survey of the Odonate (Dragonfly) Fauna of Western India and Descriptions of Thirty New Species|publisher=|year=1924|pages=498|url=http://faunaofindia.nic.in/PDFVolumes/records/026/05/0423-0522.pdf}}{{cite book|last=Subramanian|first=K. A.|title=Dragonflies and Damselflies of Peninsular India - A Field Guide|year=2005|url=http://www.ias.ac.in/Publications/Overview/Dragonflies}}{{cite web

|url=http://indiabiodiversity.org/species/show/227969|title=Paracercion calamorum Ris, 1916|publisher=India Biodiversity Portal|accessdate=2017-03-03}}{{cite web

|url=http://www.indianodonata.org/sp/385/Paracercion-calamorum|title=Paracercion calamorum Ris, 1916|publisher=Odonata of India, v. 1.00. Indian Foundation for Butterflies|accessdate=2017-03-03}}

See also

References

{{Reflist}}

External links

  • {{Wikispecies-inline|Paracercion calamorum}}
  • {{Commonscat-inline|Paracercion calamorum}}

{{Taxonbar|from=Q2134542}}

Category:Coenagrionidae

Category:Insects described in 1916

{{Coenagrionidae-stub}}