Species in the genus Megalagrion

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The genus Megalagrion ( 24 species)
Megalagrion:
McLachlan 1883
Diagnosis:
Type species:
Megalagrion blackburni McLachlan, 1883 by subsequent designation Zimmerman, 1948
Comments:
Taxonomy within this small genus remains a little fluid. Status of forms on different islands is contended cf Daigle 2000c. Polhemus treats M. amaurodytum and ssp as junior synonyms of M. koelense (teste Daigle, 2000). Kennedy (1920) erected three further genera: Hawaiiagrion (for Agrion xanthomelas Selys, 1876), Kilauagrion (for Agrion nesiotes Perkins, 1899), and Oahuagrion Kennedy (for Agrion oahuense Blackburn, 1884) these appear to have no current supporters. Perkins (1899) rejected Megalagrion, retaining a concept of Agrion Fabricius ...
Commentary:
Perkins (1899) comments at length on the existence of highly modified terrestrial larvae in Astelia leaves, and how they avoid free water.
GenusSpeciesAuthorRemarks
Megalagrionadytum
(Perkins, 1899)
 
Megalagrionamaurodytum
(Perkins, 1899)
 
Megalagrionblackburni
McLachlan, 1883
 
Megalagrioncalliphya
(McLachlan, 1883)
 
Megalagrioneudytum
(Perkins, 1899)
 
Megalagrionhawaiiense
(McLachlan, 1883)
 
Megalagrionheterogamias
(Perkins, 1899)
 
Megalagrionjugorum
(Perkins, 1899)
 
Megalagrionkauaiense
(Perkins, 1899)
 
Megalagrionkoelense
(Blackburn, 1884)
 includes asteliae Perkins 1899, some authorities would place amaurodytum Perkins 1899 in synonymy here. Perkins specifically contrasted his asteliae with koelense, so there is variation
Megalagrionleptodemas
(Perkins, 1899)
 
Megalagrionmauka
Daigle, 1997
 
Megalagrionmolokaiense
(Perkins, 1899)
 
Megalagrionnesiotes
(Perkins, 1899)
 
Megalagrionnigrohamatum
(Blackburn, 1884)
 
Megalagrionoahuense
(Blackburn, 1884)
 
Megalagrionoceanicum
McLachlan, 1883
 
Megalagrionoresitrophum
(Perkins, 1899)
 
Megalagrionorobates
(Perkins, 1899)
 
Megalagrionpacificum
(McLachlan, 1883)
 
Megalagrionpaludicola
Maciolek & Howarth, 1979
 
Megalagrionvagabundum
(Perkins, 1899)
 
Megalagrionwilliamsoni
(Perkins, 1910)
 
Megalagrionxanthomelas
(Selys, 1876)