1	Abdomen with distinct pattern consisting of three light longitudinal stripes or series of spots	2
–	Abdomen more or less uniformly colored, without distinct pattern	4
2	Sides of pronotum rounded. Virga almost straight	Echinosoma affine Hincks, 1959
–	Sides of pronotum straight, parallel.	3
3	Virga slightly undulate	Echinosoma trilineatum Borelli, 1921
–	Virga very long, convoluted	Echinosoma sarawacense Borelli, 1959
4	Pygidium characteristic, forming a large rounded lobe, filling the space between forceps, produced into a sharp pointed spine above posteriorly	Echinosoma maai Srivastava, 2003
–	Pygidium normal, without a sharp pointed spine above posteriorly	5
5	Ultimate tergite with long pubescence	6
–	Ultimate tergite setose or with very short, sparse, adpressed setae	8
6	Virga not longer than penis lobe	Echinosoma sumatranum (de Haan, 1842)
–	Virga longer than penis lobe	7
7	Virga convoluted	Echinosoma convolutum Hincks, 1959
–	Virga almost straight, not convoluted	Echinosoma komodense Bey-Bienko, 1970
8	Virga not longer than penis lobe	9
–	Virga longer than penis lobe	10
9	Penis lobe with long strong bristles (or toothed pad) beside virga	Echinosoma setulosum Hincks, 1959
–	Penis lobes without long strong bristles (or toothed pad)	Echinosoma parvulum Dohrn, 1863
10	Virgae shorter than five times of parameres in length. Pygidium longer than broad	Echinosoma andamanensis Srivastava, 1988
–	Virgae longer than five times of parameres in length. Pygidium broader than long	Echinosoma roseiventre sp. n.