1	Hindwing with smoky brown marginal band	2
–	Hindwing without any marginal band	3
2	Forewing with antemedial and medial lines well separated	S. amoyalis
–	Forewing with antemedial and medial lines merged with each other at inner area	S. confutsealis
3	Hindwing with postmedial/submarginal line	10
–	Hindwing without any postmedial/submarginal line	4
4	Forewing with dark spot or white line present	5
–	Forewing without any dark spot or white line	S. metaxantha
5	Forewing with antemedial and post medial line outlined	S. ragonotalis
–	Forewing with antemedial and postmedial line without any outline	6
6	Forewing with thin white line closing end of cell	S. rubralis
–	Forewing without fine white line at end of cell	7
7	Forewing with postmedial line strongly excurved at medial veins, then oblique to meet inner margin	S. szetschwanalis
–	Forewing with postmedial line not as above	8
8	Forewing with postmedial line approximately oblique	9
–	Forewing with postmedial line slightly wavy	S. approximans
9	Hindwing darker	S. tonsealis
–	Hindwing paler	S. peltobathra
10	Hindwing with postmedial/submarginal line incomplete	11
–	Hindwing with postmedial/submarginal line complete	14
11	Forewing expenses about 20 mm (± 2–3 mm)	12
–	Forewing expenses greater than 30 mm	13
12	Hindwing with three dark spots	S. pusilla
–	Hindwing without dark spots	S. constrictalis
13	Forewing with purplish rufous ground colour	S. discinota
–	Forewing with purplish fuscous ground colour	S. sikkima
14	Near the base of forewing a large transversely oblong whitish ringlet which encloses a black patch	S. decora
–	Forewing lacks the above attribute	15
15	Hindwing yellowish, redder towards outer margin	S. rufina
–	Hindwing not as above	16
16	Forewing with antemedial and postmedial line fused	17
–	Forewing with antemedial and postmedial line not fused	18
17	Forewing with antemedial and postmedial line fused from Cu2 to inner margin	S. inordinata
–	Forewing with antemedial and postmedial line fused at inner margin, forming V-shaped figure	S. olivina
18	Forewing with single speck	19
–	Forewing with two specks (separate or joined by a bar)	21
19	Hindwing with postmedial line crossed by a rufous streak on vein Cu2	S. pallescens
–	Hindwing without any streak on postmedial line	20
20	Forewing with an olive-green cell spot	S. pyraliformis
–	Forewing with a reddish brown discoidal spot defined by grey	S. papuana
21	Forewing without antemedial line, postmedial line present	S. unilinealis
–	Forewing with both the lines (antemedial and postmedial) present	22
22	Forewing with a large, fiery red or yellowish rufous patch below the cell before the antemedial line	23
–	Forewing without such patch below the cell before the antemedial line	25
23	Forewing with a large yellowish rufous patch below the cell before the antemedial line	S. nigripuncta
–	Forewing with a large fiery red patch below the cell before the antemedial line	24
24	Hindwing whitish, suffused with pale reddish	S. albioculalis
–	Hindwing fuscous; postmedial curved line whitish, area beyond it reddish brown	S. hoenei
25	Forewing with postmedial line highly angled	S. contigua
–	Forewing with postmedial line nearly oblique (not angled)	26
26	Forewing with postmedial line oblique from costa to inner margin	S. umtasorensis sp. nov.
–	Forewing with postmedial line straight from costa to radial vein and then oblique to inner margin	S. dzonguensis sp. nov.