Review of the genus Rhagoba Moore, 1888 (Lepidoptera, Crambidae, Spilomelinae) from Laos, with a description of new species Author Ko, Jae-Ho 0000-0001-6557-4281 DASARI Research Institute of BioResources, Dunsan-daero, 117 beon-gil, Seo-gu, Daejeon 35203, South Korea js125t@naver.com Author Bayarsaikhan, Ulziijargal Division of Life Sciences, College of Life Sciences and Bioengineering, Incheon National University, 119 Academy-ro, Yeonsu-gu, Incheon, 22012, South Korea & Bio ˗ Resource and Environmental Center, Incheon National University, 119 Academy ˗ ro, Yeonsu ˗ gu, Incheon, 22012, Republic of Korea Author Lee, Tak-Gi 0000-0002-6666-5967 Bio ˗ Resource and Environmental Center, Incheon National University, 119 Academy ˗ ro, Yeonsu ˗ gu, Incheon, 22012, Republic of Korea lkhp@naver.com Author Bae, Yang-Seop 0000-0001-7356-5633 Division of Life Sciences, College of Life Sciences and Bioengineering, Incheon National University, 119 Academy-ro, Yeonsu-gu, Incheon, 22012, South Korea & Bio ˗ Resource and Environmental Center, Incheon National University, 119 Academy ˗ ro, Yeonsu ˗ gu, Incheon, 22012, Republic of Korea & Convergence Research Center for Insect Vectors, Division of Life Sciences, College of Life Sciences and Bioengineering, Incheon National University, Songdo ˗ dong, Incheon, 22012, Republic of Korea baeys@inu.ac.kr text Zootaxa 2024 2024-04-19 5443 1 127 134 http://dx.doi.org/10.11646/zootaxa.5443.1.7 journal article 10.11646/zootaxa.5443.1.7 1175-5326 10997130 98DFDA19-1FB1-44EF-ACBD-05EF88F7CEF7 Rhagoba flavolineata Ko & Bae , sp. nov. ( Figs. 3–5 , 8 , 10 ) Type material. Holotype : ♂ , LAOS : Phou Khao Khouay National Protected Area , Bolikhamsai Prov. , 22 VII 2018 ( Bae Y.S. , Lee D.J. , Ko J.H. , Lee T .G., Jang J.M. , Bayarsaikhan U. ), ( 18°27´23.76”N 103°03´05.15”E Alt. 470 m ), genitalia slide no. INU-7134L ( Type deposited in NIBR ) . Paratypes ( 5 ♂ , 2 ♀ ): LAOS : 1 ♂ , 1 ♀ , Phou Khao Khouay National Protected Area , Bolikhamsai Prov. , 22 VII 2018 ( Bae Y.S. , Lee D.J. , Ko J.H. , Lee T .G., Jang J.M. , Bayarsaikhan U. ), ( 18°27´23.76”N 103°03´05.15”E Alt. 470 m ), genitalia slide no. INU-7135L, 7136L ; 1 ♂ , Phou Khao Khouay National Protected Area , Bolikhamsai Prov. , 28 VIII 2018 ( Bae Y.S. , Na S.M. , Lee D.J. , Ko J.H. , Lee T .G., Cha Y.B. , Jang J.M. ), ( 18°27´23.76”N 103°03´05.15”E Alt. 470 m ), genitalia slide no. INU-7133L ; 2 ♂ , 1 ♀ , Phou Khao Khouay National Protected Area , Bolikhamsai Prov. , 26 VII 2019 ( Bae Y.S. , Qi M.J. , Lee D.J. , Ko J.H. , Lee T .G., Cha Y.B. , Jang J.M. ), ( 18°27´23.76”N 103°03´05.15”E Alt. 470 m ), genitalia slide no. INU-7131L, 7132L, 7138L ; 1 ♂ , Phou Khao Khouay National Protected Area , Bolikhamsai Prov. , 27 VII 2019 ( Bae Y.S. , Qi M.J. , Lee D.J. , Ko J.H. , Lee T .G., Cha Y.B. , Jang J.M. ), ( 18°27´23.76”N 103°03´05.15”E Alt. 470 m ), genitalia slide no. INU-7137L . Diagnosis. Rhagoba flavolineata sp. nov. exhibits a strong metallic blue reflection on the thorax and translucent patches on the wings, similar to R . octomaculalis , and R . obvellata . However, it can be distinguished by the following characteristics ( Figs. 1–3 ): the postmedial area of the forewing has two semicircular translucent patches (orbicular or reniform patch in R . octomaculalis and R . obvellata ); the hindwing has two large semicircular translucent patches (two small orbicular patches or absent in R . octomaculalis and R . obvellata ); the abdomen has partly deep yellow bands (dark brown overall in R . octomaculalis and R . obvellata ). In the male genitalia ( Figs. 6–8 ), the apex of the uncus is nearly triangular (nearly spatulate in R . octomaculalis and R . obvellata ); the fibula is caniniform (spine-shaped in R . octomaculalis and R . obvellata ). In the female genitalia ( Fig. 9–10 in this study, and Du & Li 2012 , p. 370, 5B), the sclerotized part of the antrum is shorter than that of R . octomaculalis and R . obvellata . FIGURES 6–8. Male genitalia of Rhagoba spp. from Laos. 6. Rhagoba octomaculalis (INU-7102L). 7. Rhagoba obvellata (INU-6810L). 8. Rhagoba flavolineata sp. nov. (HT, INU–7134L). FIGURES 9–10. Female genitalia of Rhagoba spp. from Laos. 9. Rhagoba octomaculalis (INU-6809L). 10. Rhagoba flavolineata sp. nov. (PT, INU-7138L). Description . Adult ( Figs. 3–5 ). Length of forewing 10–12 mm in both sexes. Vertex covered with dark brown mixed grayish yellow scales; frons covered with dark brown, metallic blue reflection scales; antenna filiform, scape covered with dark brown, metallic blue reflection scales; ocellus well-developed; chaetosemata absent; labial palpus upturned, grayish yellow mixed with dark brown scales; maxillary palpus porrect, covered with dark brown scales; proboscis well-developed, grayish yellow mixed with dark brown scales. Patagium and tegula dark brown, metallic blue reflection scales. Ground color of forewing dark brown; median area with a subreniform and claviform translucent patches; postmedial area with a large oviform translucent patch, and a dark brown line transversing in the center; fringe dark brown, except white from CuA 1 to M 3 . Ground color of hindwing dark brown; basal area with a large reniform translucent patch; postmedial area with a large subreniform patch; fringe dark brown, except white from 2A to 1A. Abdomen dark brown, except deep yellow from third to sixth segments; deep yellow segments with dark brown lines at posterior part of each segment. Male genitalia ( Fig. 8 ). Uncus nearly triangular, densely setose at apex; valva ovoid, membranous and with a weakly sclerotized band transversing valva; fibula small, caniniform; sacculus well-developed, strongly sclerotized; juxta guttiform, sclerotized; saccus U-shaped; phallus cylindrical, sclerotized basally, with a rod-shaped cornutus. Female genitalia ( Fig. 10 ). Papillae anales ovate; posterior apophyses almost same length as anterior apophyses; antrum funnel-shaped, sclerotized; ductus seminalis from near posterior end of antrum; ductus bursae membranous, about 2 times length of corpus bursae; corpus bursae ovate, with two small ovoid signa. Distribution. Laos . Etymology. The specific name is derived from the Latin word flavolineata , which refers to the deep yellow abdomen.