Species in the genus Amphiallagma

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The genus Amphiallagma ( 1 species)
Kennedy 1920
Very small, male abdominal segments 3–6 largely dark dorsally. Pale thoracic colour mostly blue, black humeral stripe never divided longitudinally, sometimes reduced to hairline in (immature?) female. Pterostigmata tan to black, vein Ac at or distal to midway between antenodal crossveins. Abdominal segment 10 of male without posterodorsal protuberance. Male paraprocts not bifid in lateral view; cerci smoothly rounded distally, somewhat excavated dorsomedially, with very small conical tubercle along dorsal ridge at about one-third length, cuticle probably somewhat flexible dorsally on distal surface but scalariform cuticle absent, middle lobe absent, each cercus with dorsomedial projection at extreme base. Penis with small, quadrate earlike distolateral lobes, distinct lateral lobes absent, spines or projections not present just proximal to distal flexure. Male mesostigmal plates without posteromedial lappets; female plates without wide anteromedial trough and flange, posterior margin of pronotum undulate, middle lobe of pronotum never with well defined pits. Ovipositor valves short. (May 2002, resurrecting genus)
Type species:
Enallagma parvum Selys, 1876 by original designation
(Selys, 1876)