Statherotis discana (Felder & Rogenhofer, 1875)

(Figs. 3, 10, 15, 19, 25, 30)

Tortrix? discana Felder & Rogenhofer, 1875, Reise öst. Fregatte Novara (Zool.) (2): 5, pl. 137, Fig. 41.

Argyroploce discana Meyrick, 1911, Proc. Linn. Soc. N. S. W. 36: 280.

Statherotis discana cuneata Diakonoff, 1973, Zool. Monogr. Rijksmus. Nat. Hist. 1: 247.

Statherotis discana saturata Diakonoff, 1973, Zool. Monogr. Rijksmus. Nat. Hist. 1: 246.

Specimens examined. 46♂. THAILAND: Chiang Mai Prov., Doi Suthep-Pui N.P., 18°48.683′N, 98°53.050′E, alt. 1,264 m, 27. V.2014, np6409 (♂), 1.X.2019, np13308 (♂), 5.IX.2013, np5938 (♂, genitalia slide NP2037), 18°48.900′N, 98°53.633′E, alt. 697 m, 1. V.2014, np6372 (♂), Doi Chiang Dao Wildlife Sanctuary, 19°21.716′N, 96°55.300′E, alt. 520 m, 13–16.XI.2019, np13354 (♂), np13355 (♂), 12–14.VI.2019, np13209 (♂); Chaiyaphum Prov., Phu Khieo Wildlife Sanctuary, 16°23.216′N, 101°34.166′E, alt. 880 m, 12. III.2018, np11638 (♂), 16°27.716′N, 101°39.483′E, alt. 610 m, 14. III.2018, np11886 (♂); Ubon Ratchathani Prov., Sirindhorn Dam, 15°12.766′N, 105°26.266′E, alt . 140 m, 6–7. III.2019, np12778 (♂), 3–4.VI.2019, np12902 (♂), np12904 (♂); Nakhon Nayok Prov., Khao Yai N.P., 14°21.816′N, 101°24.616′E, alt. 1,140 m, 8. III.2010, np3553 (♂); Nakhon Ratchasima Prov., Khao Yai N.P., 14°25.916′N, 101°24.083′E, alt. 700 m, 7. VI.2016, np8884 (♂, genitalia slide NP3637), Sakaerat Environmental Research Station, 14°30.450′N, 101°55.750′E, alt. 400 m, 28.II.2014, np6861 (♂, genitalia slide NP2338); Prachinburi Prov., Khao Yai N.P., 14°11.033′N, 101°36.316′E, alt. 94 m, 15.II.2010, np3473 (♂), np3489 (♂), 9.IV.2010, np3912 (♂), 14°10.933′N, 101°28.650′E., alt 201 m, 13. V.2010, np4063 (♂); Sa Kaeo Prov., Pang Sida N.P., 13°59.600′N, 102°12.350′E, alt. 165 m, 21. XII.2017, np11476 (♂, genitalia slide NP4031), 14°07.616′N, 102°15.500′E, alt. 610 m, 25.IV.2017, np9942 (♂); 14°00.900′N, 102°11.75′E, alt. 260 m, 27.II.2017, np9466 (♂), 21.VIII.2017, np10672 (♂), np10695 (♂), np10696(♂), np10697; Chanthaburi Prov., Ang-et Community Forest, 12°36.066′N, 102°19.833′E, alt. 33 m, 19–20.II.2012, np4999 (♂), np5000 (♂), Khao Glaur, 13°05.816′N, 102°10.350′E., alt. 166 m, 15. V.2009, (♂), Khao Khitchakut N.P., 12°50.350′N, 102°07.250′E, alt. 73 m, 21.II.2012, np7688 (♂); Trat Prov., Trat Agroforestry Research Station, 12°23.566′N, 102°40.000′E, alt . 46 m, 16–19.IX.2010, np4730 (♂); Uthai Thani Prov., Huai Kha Khaeng Wildlife Sanctuary, 15°29.450′N, 99°18.050′E, alt. 550 m, 17. VIII.2020, np13408 (♂), 13.X.2020, np13595 (♂), 15°33.183′N, 99°17.750′E, alt. 250 m, 23. VIII.2020, np13491 (♂), 12.X.2020, np13549 (♂); Kanchanaburi Prov., Thong Pha Phum N.P., 14°41.450′N, 98°27.483′E, alt. 730 m, 20. XII.2003, np1015 (♂, genitalia slide NP674), Sahakorn Nikhom Community Forest, 14°45.666′N, 98°49.233′E, alt. 695 m, 12. V.2018, np12048; Phetchaburi Prov., Kaeng Krachan N.P., 12°47.916′N, 99°27.250′E, alt. 320 m, 13. V.2019, np 13271 (♂), 12°49.433′N, 99°21.933′E, alt. 974 m, 2.IV.2019, np 13113 (♂); Nakhon Si Thammarat Prov., Khao Nan N.P., 08°55.416′N, 99°39.816′E, alt. 131 m, 11.I.2008, np2587 (♂), 08°54.983′N, 99°43.950′E, alt. 187 m, 7.II.2008, np2499 (♂), np2556 (♂), 08°46.916′N, 99°47.733′E, alt. 123 m, 1. V.2008, np2679 (♂), 08°51.783′N, 99°37.600′E, alt. 207 m, 23.XI.2006, np1782 (♂), 24.XI.2006, np1803 (♂), 08°46.316′N, 99°48.200′E, alt. 375 m, 13. V.2006, np1630 (♂). All specimens were collected by N. Pinkaew et al. and deposited in KKIC.

Diagnosis. The wing pattern of Statherotis discana (Fig. 3) is most similar to S. muangmaithongi sp. nov. It can be distinguished by the modified black scale patch on the underside of forewing (Fig. 15) and the upperside of hindwing medially (Fig. 3) and the hindwing without a large anal rounded lobe whereas the latter species has a large anal rounded lobe in hindwing but lacks the patch of modified black scales on the underside of forewing and the upperside of hindwing medially. The hind tibia (Fig. 19) has a tuft of yellowish white hair pencils that is smaller than in S. leucaspis . The male genitalia (Fig. 30) are similar to S. leucaspis, but the width of the cucullus is narrower in S. discana than in S. leucaspis .

Remarks. Specimens from Thailand were collected from various habitats (evergreen forest, hill evergreen forest, dry evergreen forest, mixed deciduous forest, dry dipterocarp forest, grassland, and restoration forest) at a wide range of elevations, 33–1,264 m.