UpdateBot at 11:21, 20 November 2021

2021-11-20T11:21:06Z

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{{short description|Species of dragonfly}}
{{Speciesbox
| image = Lyriothemis acigastra male at Kadavoor.jpg
| image_caption = Male, [[Kadavoor]]
| image2 = Lyriothemis acigastra female at Kadavoor.jpg
| image2_caption = Female, [[Kadavoor]]
| status = DD
| status_system = IUCN3.1
| status_ref = <ref name="iucn status 20 November 2021">{{cite iucn |author=Dow, R.A. |date=2009 |title=''Lyriothemis acigastra'' |volume=2009 |page=e.T163701A5638198 |doi=10.2305/IUCN.UK.2009-2.RLTS.T163701A5638198.en |access-date=20 November 2021}}</ref>
| genus = Lyriothemis
| species = acigastra
| authority = ([[Edmond de Sélys Longchamps|Selys]], 1878)
| synonyms = ''Calothemis acigastra'' {{small|Selys, 1878}}
}}

'''''Lyriothemis acigastra'''''<ref name=wol>{{World Odonata List}}</ref> or '''Little Bloodtail''' is a species of [[dragonfly]] in the family of [[Libellulidae]] known from [[India]].<ref name="Taprobanica">{{cite journal|year=2013|volume=5|issue=1|pages=73–4|journal= Taprobanica: The Journal of Asian Biodiversity|title= ''Lyriothemis acigastra'': a new addition to the odonata fauna of Peninsular India|author1=Emiliyamma KG |author2=Palot Md |author3=Radhakrishnan C |author4=Balakrishnan VC |doi=10.4038/tapro.v5i1.5672|doi-access=free}}</ref><ref name=atlas>{{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=334–335}}</ref> The [[International Union for Conservation of Nature]] also cites very old collections in [[Burma]], [[China]] and [[Tibet]].<ref name="iucn status 20 November 2021" /><ref name=Fraser>{{cite book|author=C FC Lt. Fraser|author-link=Frederic Charles Fraser|title=The Fauna of British India, including Ceylon and Burma, Odonata Vol. III|publisher=Taylor and Francis|location=Red Lion Court, Fleet Street, London|year=1936|pages=[https://archive.org/details/FraserOdonata3/page/n276 265]-267|url=https://archive.org/details/FraserOdonata3}}</ref>

The genus ''[[Lyriothemis]]'' is made up of 15 species and is widespread across Asia. Three species in the genus are known from India; ''[[Lyriothemis cleis|L. cleis]]'', ''[[Lyriothemis tricolor|L. tricolor]]'' and ''L. acigastra''. All three were thought to be restricted to the northeastern states of [[Assam]] and [[West Bengal]], but, in 2013, ''L. acigastra'' and ''L. tricolor'' were recorded in the southern state of [[Kerala]].<ref name="Taprobanica"/><ref name="Threatenedtaxa">{{cite journal|year = 2013|volume = 5|issue = 17|pages = 5237–5346|journal = Journal of Threatened Taxa|title = Range extension and larval habitat of ''Lyriothemis tricolor'' Ris, 1919 (Odonata: Anisoptera: Libellulidae) from southern Western Ghats, India.|author = Das, K.S.A.|author2 = K.A. Subramanian|author3 = K.G. Emiliyamma|author4 = M.J. Palot|author5 = K.A. Nishadh|name-list-style = amp|doi = 10.11609/JoTT.o3716.5237-46|doi-access = free}}</ref>

==Description==
It is a small dragonfly with brown-capped greenish-yellow eyes. Its thorax is blackish brown, marked with yellow. There is a broad oval antehumeral (situated in front of the fore legs)<ref>{{Cite web|url=https://www.wordnik.com/words/antehumeral|title=antehumeral — definition, examples, related words and more at Wordnik|website=Wordnik.com|access-date=2019-03-27}}</ref> stripe and a short transverse stripe bordering it just below. Laterally there are three stripes. The wings are transparent and palely tinted with yellow at the extreme base. The abdomen in the male is blood-red, tapered from base to end, and marked with black. Segment 1 is black, with its apical border narrowly red. Segment 2 has its base broadly black and apical borderless so. Segments 3 to 8 have the borders narrowly black and the mid-dorsal carina broadly so. This mid-dorsal black stripe dilates at the apical ends of 3 to 6. Segment 9 has only a narrow short red stripe on each side. Segment 10 is entirely black. The anal appendages are black.<ref name=Fraser/>

The female is similar to the male, except that the abdomen is cylindrical rather than tapered from base to end and is a reddish-yellow color instead of blood red.<ref name=Fraser/>

==Habitat==
Little is known about the species' [[ecology]] or [[habitat]], which could be because of its rarity and secretive nature. The specimens reported in 2013 were found in bushes around freshwater marshland and streams. Individuals were generally at their most active in the evening and morning; males rested at around {{convert|8|to|10|m|ft}} from the ground, and preyed upon [[Skipper (butterfly)|skippers]] and small moths.<ref name="Taprobanica"/>

The species closely resembles the Sri Lankan species ''[[Lyriothemis defonsekai|L. defonsekai]]'', described in 2009.<ref>{{cite journal|title= ''Lyriothemis defonsekai'' spec. nov. from Sri Lanka, with a review of the known species of the genus (Anisoptera: Libellulidae)|author= Poorten Nvd|journal=Odonatologica|volume=38|issue=1|pages=15–27|url=http://natuurtijdschriften.nl/download?type=document&docid=592648}}</ref>

==See also==
{{Commons}}
{{Wikispecies}}
*[[List of odonata species of India]]
*[[List of odonata of Kerala]]

==References==
{{Reflist}}

{{Taxonbar|from=Q2413777}}

[[Category:Libellulidae]]
[[Category:Odonata of Asia]]
[[Category:Insects of India]]
[[Category:Insects described in 1878]]
[[Category:Taxa named by Edmond de Sélys Longchamps]]

Lyriothemis acigastra - Revision history

UpdateBot at 11:21, 20 November 2021