First report of the genus Neadeloides Klima, 1939 (Lepidoptera, Crambidae Pyraustinae) in Laos, with description of a new species Author Ko, Jae-Ho 0000-0001-6557-4281 Bio-Resource and Environmental Center, Incheon National University, 119 Academy-ro, Yeonsu-gu, Incheon 22012, South Korea. js 125 t @ naver. com; https: // orcid. org / 0000 - 0001 - 6557 - 4281 js125t@naver.com Author Bae, Yang-Seop 0000-0001-6557-4281 Bio-Resource and Environmental Center, Incheon National University, 119 Academy-ro, Yeonsu-gu, Incheon 22012, South Korea. js 125 t @ naver. com; https: // orcid. org / 0000 - 0001 - 6557 - 4281 & Division of Life Sciences, College of Life Sciences and Bioengineering, Incheon National University, 119 Academy-ro, Yeonsu-gu, Incheon, 22012, South Korea. js125t@naver.com text Zootaxa 2020 2020-10-19 4861 3 444 450 journal article 9011 10.11646/zootaxa.4861.3.10 9647087a-d9c6-40af-817d-1ee235973ebd 1175-5326 4416347 Neadeloides acridentata Ko & Bae , sp. nov. ( Figs. 1–5 ) Type materials. Holotype : ♂ , Laos , Phosabous National Protected Area , Ban Tha II (N19˚43′01.29″, E103˚35′23.53″ Alt. 1186 m ), 13.XI.2015 ( Bae Y.S. , Park B.S. , Na S.M. , Kim J.W. , Lee D.J. ), genitalia slide no. INU–7008L . Paratypes ( 2♂ ): LAOS , 2♂ , Phosabous National Protected Area , Ban Tha II (N19˚45′07.35″, E103˚33′25.34″ Alt. 1296 m ), 12.XI.2015 ( Bae Y.S. , Park B.S. , Na S.M. , Kim J.W. , Lee D.J. ), Gen. Slide No. INU–6748L, 7007L . Diagnosis. Neadeloides acridentata sp. nov. is very similar morphologically to N. cinerealis (Moore) and N . glaucoptera (Hampson) , but can be distinguished by the following characters: sacculus with small triangular process and sharply spine–shaped process; phallus with minute circular cornuti in male genitalia ( Figs. 3 , 5 ). As for N. cinerealis , sacculus gradually narrow, with a hook–shaped saccular process; phallus with short, blunt cornutus in male genitalia ( Singh et al ., 2019: 288–289 , figs. 1–4, 8). As for N. glaucoptera , sacculus angled at distal 1/3, with a hook–shaped saccular process; phallus with a bundle of long, spine–shaped cornuti in male genitalia ( Singh et al ., 2019: 286 , 288, figs. 5, 9). FIGURES 1–2. Head of Neadeloides acridentata sp. nov. 1. Upper view. 2. Lateral view. FIGURE 3. Adults of Neadeloides acridentata sp. nov. 3a. Holotype, male INU–7008L. 3b. Paratype, male INU–6748L. Description . Adult ( Figs. 1–4 ). Length of forewing 20–21 mm in male. Vertex covered with blond scales; frons flat, blond and white at central and lateral; antenna filiform, longer than forewing ( 30–31 mm in male) and blond, mixed with white scales at base; ocellus well–developed; chaetosema absent; labial palpus porrect, blond, mixed with white scales; proboscis well–developed, blond, mixed with white scales. Patagium and tegula gray. Ground color of forewing gray, nearly diamond–shaped, with acuminate apex; termen nearly straight; dorsum slightly rounded; fringe gray. Ground color of hindwing gray, whitish from costal margin to M 1 and from dorsum to CuA 2 , fan–shaped, with slightly rounded at apex and termen; dorsum nearly straight; fringe whitish, except gray from M 1 to CuA 2 ( Figs. 1–3 ). Venation of forewing with 12 veins: Sc free; R 1 free; R 2 , R 3 and R 4 common origin; R 2 shortly stalked; R 3 and R 4 fused half length; R 5 and M 1 free, both from upper angle of discal cell; M 2 and M 3 free, both from lower angle of discal cell; CuA 1 and CuA 2 free; 1A free; 2A nearly indistinct; discal cell about 1/2 length of forewing ( Fig. 4 ). Venation of hindwing with 10 veins: Sc+R 1 and Rs free, stalked for most of length; M 1 free, from upper angle of discal cell; M 2 and M 3 free, from lower angle of discal cell; CuA 1 free, near lower angle of discal cell; CuA 2 free, from 2/3 length of discal cell; 1A, 2A and 3A free; discal cell about 1/5 length of hindwing ( Fig. 4 ). Abdomen slender and with gray scales. Male genitalia ( Fig. 5 ). Uncus oblong, rounded, setose at tip; valva spatulate, setose overall, except at basal area; costal margin sclerotized; basal area of valva membranous; 2/3 of dorsum convex prominent; sacculus strongly sclerotized, with two saccular process, upper process sharply caniniform and lower process triangular; juxta heart–shaped; saccus U–shaped; phallus cylindrical, almost same length of valva, cornuti a long, stout spine and sparse, minute–circles. FIGURE 4. Wing venation of Neadeloides acridentata sp. nov. FIGURE 5. Male genitalia of Neadeloides acridentata sp. nov. 5a. Holotype, INU–7008L. 5b. Paratype, INU–6748L. Female . Unknown. Distribution. Laos (Ban Tha II). Etymology. The specific name is derived from the Latin acridentata , referring to the sharpened processes of the sacculus.