Meleonoma magnidentata Wang, 2020

Zhu, Xiaoju, Cai, Bo & Wang, Shuxia, 2020, Genus Meleonoma Meyrick, 1914 (Lepidoptera, Autostichidae) from Hainan Island, China, with descriptions of sixteen new species, ZooKeys 975, pp. 125-157 : 125

Meleonoma magnidentata Wang sp. nov. Figs 7 , 23 , 37

Type material.

China, Hainan: Holotype ♂, Tianchi (18.73N, 108.87E), Jianfengling, 787 m, 10.III.2016, leg. QY Wang et al., slide No. LJ17530. Paratypes (4♂3♀): 1♂, Forest Park, Mt. Limu, 607 m, 15.V.2015, leg. PX Cong et al.; 1♂1♀, Mt. Wuzhi, 738 m, X.29-XI.4.2016, leg. X Bai et al., slide No. ZXJ18261♀; 1♂, Mt. Wuzhi, 732 m, 2.VIII.2017, leg. X Bai et al.; 1♂1♀, Mt. Diaoluo, 940 m, 31.V-2.VI.2007, leg. ZW Zhang & WC Li; 1♀, Mt. Diaoluo, 922 m, 24.V.2015, leg. PX Cong et al.

Diagnosis.

The new species can be distinguished from its congeners by the valva with several large, strong denticles different in number and size on the ventral margin, and by the lamella antevaginalis being broad rectangular ventrally, narrowly banded dorsally, and joined laterally.

Description.

Adult (Fig. 7 ). Wingspan 18.0-18.5 mm. Head blackish brown, mixed with yellow. Labial palpus yellow; second segment with blackish brown scales on outer surface, with a blackish brown ring at apex; third segment slightly shorter than second segment, mixed with sparse blackish brown scales. Antenna with scape blackish brown basally, yellow distally; flagellum blackish brown. Thorax and tegula blackish brown. Forewing blackish brown; costal margin with two yellow spots: antemedian spot rectangular, from before basal 1/3 oblique outwards, crossing anterior margin of cell posteriorly, distal spot sub-triangular, at ca. distal 1/4; cell with a small yellow spot near outer margin; plical spot yellow, very small; fringe yellow, except greyish black along distal part of costal margin and around tornus. Hindwing and fringe yellowish grey. Legs yellow, with exception on ventral surface: foreleg blackish brown, femur scattered with yellow scales apically, tarsus yellow at apices of basal two tarsomeres; mid- and hindlegs blackish brown, tarsi yellow at apex of each tarsomere; all tibiae yellow apically.

Male genitalia (Fig. 23 ). Uncus clavate, uniformly wide from near base to before pointed apex. Gnathos sclerotized laterally, exceeding anterior margin of tegumen, membranous anteriorly. Tegumen V-shaped, uniformly wide, with sclerotized edges. Valva narrow at base, widened from base to basal 1/3, thereafter narrowed to rounded apex, setose; ventral margin projected medially, with several large, strong denticles along basal 2/3, different in number and size on left and right valvae; costa lineate, reaching before apex of valva, with sparse setae basally; transtilla short and wide, narrowed to apex, with long setae at base. Sacculus wide at base, narrowed from base to before apex; apex triangularly produced, setose; ventral margin sclerotized and folded. Saccus ca. 1/2 length of uncus, wide at base, narrowed to rounded apex. Juxta U-shaped; lateral lobe clubbed, slightly enlarged distally. Phallus stout, approximately as long as valva, slightly widened medially, with a spine before apex and numerous teeth sparsely grouped below it.

Female genitalia (Fig. 37 ). Papillae anales sub-rectangular, setose. Apophyses posteriores ca. 2.5 × length of apophyses anteriores. Eighth sternal plate with posterior margin rounded, slightly concave at middle, lined with sparse long setae. Lamella antevaginalis ventrally broad rectangular, concave medially on anterior margin, narrowly banded dorsally, joined laterally. Ductus bursae with posterior 3/4 membranous, uniformly wide, anterior 1/4 sclerotized; ductus seminalis arising from anterior 1/3. Corpus bursae as long as ductus bursae, widened anteriorly; signum absent.

Distribution.

Hainan (Jianfengling, Mt. Limu, Mt. Diaoluo, Mt. Wuzhi).

Etymology.

The specific epithet is derived from the Latin magni - (adj., large) and dentatus (adj., dentate), referring to the large denticles on the ventral margin of the valva.

Figures

Figures 4 - 11. Male adults of Meleonoma spp. 4 M. apicicurvata sp. nov. 5 M. linearis sp. nov. 6 M. rostellata sp. nov. 7 M. magnidentata sp. nov. 8 M. bicuspidata sp. nov. 9 M. latiunca sp. nov. 10 M. pectinalis sp. nov. 11 M. hainanensis sp. nov. All holotypes. Scale bars: 2.0 mm.

Figures 20 - 27. Male genitalia of Meleonoma spp. 20 M. apicicurvata sp. nov., slide No. ZXJ 19011 21 M. linearis sp. nov., slide No. YAH 15402 22 M. rostellata sp. nov., slide No. ZXJ 18130 23 M. magnidentata sp. nov., slide No. LJ 17530 24 M. bicuspidata sp. nov., slide No. YAH 15447 25 M. latiunca sp. nov., slide No. ZXJ 18430 26 M. pectinalis sp. nov., slide No. YAH 15502 27 M. hainanensis sp. nov., slide No. YAH 15508. All holotypes. Scale bars: 0.2 mm.

Figures 36 - 41. Female genitalia of Meleonoma spp. 36 M. rostellata sp. nov., slide No. ZXJ 18410 37 M. magnidentata sp. nov., slide No. ZXJ 18261 38 M. pectinalis sp. nov., slide No. YAH 15095 39 M. ornithorrhyncha sp. nov., slide No. ZXJ 19027 40 M. parilis sp. nov., slide No. YAH 15503 41 M. bidentata sp. nov., slide No. YAH 15442. All paratypes. Scale bars: 0.2 mm (36, 38 - 41); 0.5 mm (37).