Genus Meleonoma Meyrick, 1914 (Lepidoptera, Autostichidae) from Hainan Island, China, with descriptions of sixteen new species Author Zhu, Xiaoju College of Life Sciences, Nankai University, Tianjin 300071, China Author Cai, Bo Hainan Province Engineering Research Center for Quarantine, Prevention and Control of Exotic Pests, Haikou 570311, Hainan, China Author Wang, Shuxia College of Life Sciences, Nankai University, Tianjin 300071, China shxwang@nankai.edu.cn text ZooKeys 2020 975 125 157 http://dx.doi.org/10.3897/zookeys.975.53289 journal article http://dx.doi.org/10.3897/zookeys.975.53289 1313-2970-975-125 FBAB457B762C41DE9EFA2443321C1193 95ED5DBCF0F35DA9A3465E893CD4BF83 Meleonoma quadritaeniata Wang sp. nov. Figs 14 , 30 Type material. China, Hainan: Holotype ♂, Mt. Wuzhi ( 18.91N , 109.68E ), 710 m, 21.IV.2014, leg. TT Liu et al., slide No. YAH15450. Paratypes : 2♂, Mt. Wuzhi, 740 m, 12-14.IV.2009, leg. Q Jin & BB Hu. Diagnosis. The new species can be distinguished from its congeners by the phallus with four narrowly band-shaped sclerites in distal 1/3. It is similar to M. parilis sp. nov., and the differences between them can be found in the diagnosis of the preceding species. Description. Adult (Fig. 14 ). Wingspan 10.0-11.0 mm. Head orange, frons with blackish brown scales, vertex with scales tipped blackish brown. Labial palpus orange; first and second segments with black scales on outer surface; second segment with a black ring apically; third segment tinged with brown scales, nearly 2/3 length of second segment. Antenna yellow; scape black on basal half dorsally; flagellum ringed with blackish brown on dorsal surface. Thorax black medially, yellow laterally; tegula black basally, yellow distally. Forewing orange-yellow; costal margin with four black spots: first spot at base, sub-rectangular, extending to fold posteriorly; second spot from beyond basal 1/4 diffused and narrowed to middle of cell posteriorly; third spot from basal 1/3 widened to before distal 1/3; fourth spot small, placed at distal 1/5, consisting of several black scales; apex with a large diffused black spot, anteriorly diffused to costal margin; cell with a diffused black spot at middle and a rectangular black spot at distal 1/3, the latter below third costal spot; plical spot at middle of fold, diffused to second costal spot; tornal spot large, equally sized with apical spot; dorsum with black spot at base and before middle respectively; fringe greyish blackish except yellow basally. Hindwing and fringe blackish grey. Legs yellow, with exception on ventral surface: fore- and midlegs scattered with dense black scales, tibiae of fore- and midlegs yellow apically, tarsi of fore- and midlegs yellow at apices of basal two tarsomeres, hindleg whitish yellow mixed with black scales. Male genitalia (Fig. 30 ). Uncus extremely long and slender, slightly wide at base, pointed at apex. Gnathos sclerotized laterally, just exceeding posterior margin of tegumen, invisible anteriorly. Tegumen uniformly wide medially; lateral arm narrowed anteriorly. Valva wide at base, narrowed to middle, widened from middle to apex; apex obliquely obtuse, produced dorsoapically, with dense fine setae; ventral margin heavily sclerotized, forming a wide band, concave near base, produced to a strong spine directing exceeding apex of valva apically; costa wide basally, narrowed to middle, projected triangularly near base; transtilla short and stout. Sacculus sub-quadrate, dorsal margin heavily sclerotized, sinuate; ventral margin heavily sclerotized, forming a wide band with a strong spine-shaped apical process; apex heavily sclerotized, truncate, with a large tooth dorsoapically. Vinculum extended anteriorly, forming a small saccus. Juxta slightly arched. Phallus nearly as long as valva; basal 3/5 sclerotized, tubular; distal 2/5 membranous, with four narrowly banded sclerites pointed apically. Female unknown. Distribution. Hainan (Mt. Wuzhi). Etymology. The specific epithet is derived from the Latin quadri - (of four) and taeniatus (adj., banded), referring to the four banded plates of the phallus.