About Hylaeothemis apicalis Fraser, 1924
Hylaeothemis apicalis Fraser, 1924 is a medium-sized dragonfly, with bluish-green eyes. Its thorax is black marked with pale blue; it has two fine mid-dorsal stripes and a humeral stripe that broadens below. The lateral side of the thorax is blue, with a rather broad black stripe that bifurcates below to form an inverted Y. The abdomen is slim and black, marked with pale blue. Segment 1 of the abdomen has a large lateral spot and a triangular apical mid-dorsal spot. Segment 2 has a fine mid-dorsal stripe, a large subdorsal apical spot, and a large ventro-lateral spot. Segments 3 to 6 have lateral stripes. Segment 7 has a large dorsal spot covering its basal three-fourths. The anal appendages are black. Females are similar to males, but have greenish-yellow markings instead of blue, matching the coloration of sub-adult males. This species occurs in small colonies closely associated with forested marshes. It breeds in marsh seepage along the banks of mountain streams, and is typically found resting on foliage beside these streams.