Mortonagrion falcatum

Male : A small and slender species with vivid green and dark brown colouration. The head is mostly green with brown markings above; the labrum is greenish-yellow, while the vertex and occipital area are darker. The prothorax is reddish-brown above with bright green lateral areas and a large blue spot on the posterior lobe. The synthorax is reddish-brown dorsally with extensive bluish-green sides and a broad humeral band. The wings are hyaline with yellowish tinting and a pale cinnamon-coloured pterostigma. The abdomen is slender, predominantly black to dark brown with contrasting blue markings. Segment 2 has a large U-shaped dorsal marking, while segments 3–6 possess blue basal rings. Segments 8–10 are mostly bluish-green. The male anal appendages are distinctive; the superior appendages are short and conical, while the inferior appendages are longer, strongly curved upward, and bear an internal tooth. Female : Similar to the male but generally paler. The head has reduced dark markings, while the prothorax is hazel-brown with bluish-purple sides. The synthorax has wider pale markings, with bluish-green lateral areas and purplish-blue antehumeral lines. The abdomen resembles the male but with less extensive blue markings; segment 2 has reduced spots and segments 8–10 are darker. The anal appendages are dark reddish-brown, and the vulvar scales are short.