Drepanosticta bicolor

Male : A dark-coloured Drepanosticta with contrasting pale markings on the body. Head with whitish mandibles, labrum, and anteclypeus; the anterior margin of the labrum is dark brown. The remaining parts of the head are mostly dark, with pale areas near the eyes and a distinct transverse occipital carina. The prothorax is brown. The anterior lobe is simple, while the posterior lobe is rounded, with sharply developed lateral corners and without paired posterior processes. The synthorax is dark brown to black dorsally, with contrasting pale markings on the sides. A broad triangular pale marking is present on the posterior part of the mesepimeron and continues onto the metepimeron. The ventral side of the synthorax is paler. Legs are mainly dirty yellow with darker rings at the joints. Wings are hyaline with brown venation and brown pterostigma. The abdomen is variegated, with segments 3–7 mostly brownish black and bearing pale basal markings. Segment 8 has pale markings, while segment 10 is entirely dark. Male anal appendages are distinctive: the superior appendages are slender, strongly curved inward in dorsal view, with the distal part compressed and ending in a sharp tip; the inferior appendages are shorter, stout, and slightly divergent. Female : Unknown.