Lihat sumber bagi Enallagma cyathigerum

== Kesan manusia ==
[[Racun makhluk perosak|Racun perosak]] mempunyai kesan besar terhadap spesies ini kerana tahap sensitifinya. Racun perosak ini diperkenalkan ke air melalui [[ Larian permukaan |aliran air]] dan ditambahkan secara langsung.<ref name=":3">{{Cite journal|last=Van Gossum|first=Hans|last2=Bots|first2=Jessica|last3=Snijkers|first3=Tom|last4=Meyer|first4=Johan|last5=Van Wassenbergh|first5=Sam|last6=De Coen|first6=Wim|last7=De Bruyn|first7=Luc|date=2009|title=Behaviour of damselfly larvae (''Enallagma cyathigerum'') (Insecta, Odonata) after long-term exposure to PFOS|journal=Environmental Pollution|language=en|volume=157|issue=4|pages=1332–1336|doi=10.1016/j.envpol.2008.11.031|issn=0269-7491|pmid=19110351}}</ref><ref>{{Cite journal|last=Stoks|first=Robby|last2=Janssens|first2=Lizanne|date=2013|title=Fitness Effects of Chlorpyrifos in the Damselfly ''Enallagma cyathigerum'' Strongly Depend upon Temperature and Food Level and Can Bridge Metamorphosis|journal=PLOS ONE|language=en|volume=8|issue=6|pages=e68107|bibcode=2013PLoSO...868107J|doi=10.1371/journal.pone.0068107|issn=1932-6203|pmc=3694015|pmid=23840819}}</ref> Terdedah kepada racun perosak menjadikan organisma ini kurang berjaya dalam [[metamorfosis]] dengan kesannya semakin teruk apabila organisma terdedah lebih lama.<ref name=":1">{{Cite journal|last=Bots|first=Jessica|last2=De Bruyn|first2=Luc|last3=Snijkers|first3=Tom|last4=Van Den Branden|first4=Bert|last5=Van Gossum|first5=Hans|date=2010|title=Exposure to perfluorooctane sulfonic acid (PFOS) adversely affects the life-cycle of the damselfly ''Enallagma cyathigerum''|journal=Environmental Pollution|language=en|volume=158|issue=3|pages=901–905|doi=10.1016/j.envpol.2009.09.016|issn=0269-7491|pmid=19811863}}</ref> Pendedahan kepada larva mempunyai kesan pada tahap kehidupan dewasanya berkaitan dengan kecergasan mereka<ref name=":4">{{Cite journal|last=Janssens|first=Lizanne|last2=Stoks|first2=Robby|date=2013|title=Exposure to a widespread non-pathogenic bacterium magnifies sublethal pesticide effects in the damselfly ''Enallagma cyathigerum'': From the suborganismal level to fitness-related traits|journal=Environmental Pollution|language=en|volume=177|pages=143–149|doi=10.1016/j.envpol.2013.02.016|issn=0269-7491|pmid=23500051}}</ref> Tingkah laku berkurangan dengan pengenalan racun perosak.