It is a large dragonfly with bottle-green eyes. Its thorax is velvet-black marked with tender-foliage green. Segment 1 of the abdomen is black with lower part of sides and middle of apical border dorsally pale grass-green. Segment 2 is black with a mid-dorsal stripe bordered with yellow or grass-green. Segment 3 is with a narrow mid-dorsal stripe in green to yellow. The apical
third of the segment is black, the medial third except on mid-dorsum bright reddish-brown. Segments 4 to 6 are similar to 3; but the middle third of all segments is entirely reddish-brown. Segment 7 has basal two-thirds citron-yellow and apical third black. Segment 8 is dark reddish-brown changing to black on dorsum. Segment 9 is similar but with the lateral spot much larger and brighter yellow. Segment 10 is reddish-brown. Anal appendages are reddish-brown, paler at base.[4]
It differs from Megalogomphus hannyngtoni by the red medial markings of abdominal segments 3 to 6, by the occiput being
yellow instead of black and the face less black, and by the presence of a humeral stripes.[4]
This dragonfly perches on twigs, shrubs, and boulders in hill streams. It breeds in fast flowing forested hill streams.[4][5]
