Characters;"S. dawydoffi";"S. multidens";"Laos (Syntypes)";Thailand;"China (Holotype)";"Hong Kong and Taiwan" "Number of antennal articles";18;17–18;"7/4, damaged";17–19 "Number of glabrous articles";6;6;6;6 "Teeth on tooth-plate";6+6;"5+5, 7+6, 10+9";5+7;7+7 "First tergite with complete paramedian sutures";3;2–3;2;2–4 "First tergite with margination";11;12–14;9;13 "Tergite surface";smooth;smooth;"short median furrow on posterior part";"short transverse groove on anterior-lateral part (TT2–20)" "Median furrow on tergite of ULBS";absent;absent;absent;absent "Extent (percentage) of paramedian sutures on sternites";"incomplete (15–35%)";"incomplete (20–60%)";"incomplete (40–60%)";"incomplete (20–100%)" "Sternite of ultimate leg-bearing segment";"sides converging posteriorly";"sides converging posteriorly";"sides converging posteriorly";"sides converging posteriorly" "Spines on coxopleural process";"AP: 1 SAP: 2";"AP: 1–2 SAP: 1–2";"AP: 1 SAP: 2";"AP: 1–2 SAP: 1–2" "Spine formula on prefemora of ultimate legs";"VL: 2 M: 2 DM: 2 SP: 2–3";"VL: 0–2 M: 0–1 DM: 0–2 SP: 1–5";"VL: 3 M: 2 DM: 2 SP: 2–3";"VL: 2 M: 2 DM: 2 SP: 1–3" "Legs with one tarsal spur";1–19;1–19;"1–19 (20?)";"1–19 (20L)" "Podomeres of ultimate legs with shallow groove on posterior part";"prefemur and femur";"prefemur and femur";"prefemur and femur";"prefemur and femur" "Gonopods on genital segment";"? (female)";absent;?;absent