Meleonoma parilis 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 parilis Wang sp. nov. Figs 13 , 29 , 40

Type material.

China, Hainan: Holotype ♂, Forest Park (19.17N, 109.73E), Mt. Limu, 607 m, 24.VII.2014, leg. PX Cong et al., slide No. YAH15444. Paratypes (49♂8♀): 2♂1♀, 23-24.VII.2014, other same data as holotype, slide No. YAH15503♀; 1♀, Bawangling, 650 m, 7.IV.2008, leg. BB Hu & HY Bai; 11♂4♀, Yinggezui, Yinggeling, 599 m, 27.VII-1.VIII.2017, leg. X Bai et al.; 27♂1♀, Mt. Wuzhi, 738 m, 2-3.III.2016, leg. QY Wang et al.; 1♂, Jianfengling, 940 m, 4.VI.2007, leg. ZW Zhang & WC Li; 1♂1♀, Tianchi, Jianfengling, 790 m, 1.IV.2008, leg. BB Hu & HY Bai; 1♂, Jianfengling, 1050 m, 27.IV.2014, leg. TT Liu et al.; 1♂, 15.VII.2015, 2♂, 5-6.III.2016, Tianchi, Jianfengling, 787 m, QY Wang et al.; 3♂, Mingfenggu, Jianfengling, 954 m, 8-9.VIII.2017, leg. X Bai et al.

Diagnosis.

The new species can be distinguished from its congeners in the male genitalia by the straightly uniform uncus with a truncate apex. It is similar to M. quadritaeniata sp. nov. in the male genitalia, but can be separated from the latter by the sacculus lacking a ventroapical process, the elongate saccus longer than the uncus, and the phallus with a wide banded plate distally; in M. quadritaeniata , the sacculus has a spine-shaped ventroapical process, the small saccus is shorter than the uncus, and the phallus has four narrowly banded sclerites distally. It is similar to M. flavifasciana Kitajima & Sakamaki, 2019 in the female genitalia, but can be distinguished by the lamella antevaginalis convex medially on the anterior margin, and the corpus bursae without a signum; whereas the lamella antevaginalis is concave medially on the anterior margin, and the corpus bursae has a signum in M. flavifasciana ( Kitajima and Sakamaki 2019: 41, fig. 24).

Description.

Adult (Fig. 13 ). Wingspan 11.0-12.0 mm. Head with frons blackish grey mixed with yellow scales; vertex blackish grey, yellow laterally. Labial palpus yellow; first and second segments mixed with dense blackish grey scales, with a black ring apically; third segment 2/3 length of second segment, blackish grey in basal 2/3. Antenna yellow; scape with scattered blackish grey scales; flagellum ringed with blackish grey. Thorax blackish grey, yellow laterally; tegula blackish grey basally, yellow distally. Forewing elongate-lanceolate, apex narrowly rounded; ground color orange-yellow; costal margin with four black spots: first one at base, rounded, extending to above fold posteriorly; second one horizontally narrow rectangular, from between basal 1/6 and 1/3 extending to above anterior margin of cell posteriorly; third one largest, parallelogram-shaped, from between 2/5 and distal 1/3 crossing anterior margin of cell posteriorly; fourth one small, at ca. distal 1/4, consisting of a few black scales; apex with a large black spot, diffused to costal margin and termen; tornal spot black, large, extending to posterior corner of cell; cell with a diffused black spot near base and a rectangular spot at ca. distal 1/3; plical spot black, large, at basal 2/3 of fold, diffused to discal spot anteriorly; dorsum greyish black along basal 2/3, forming a large stripe; fringe blackish grey, yellow basally. Hindwing and fringe deep grey, yellow basally. Legs orange-yellow, with exception on ventral surface: fore coxa blackish brown; tarsi of fore- and midlegs blackish brown, yellow at apices of basal two tarsomeres; hind tarsus blackish brown, yellow at apex of each tarsomere; all femora tinged with blackish brown scales, tibiae blackish brown, yellow apically.

Male genitalia (Fig. 29 ). Uncus straight, uniform in width from near base to truncate apex. Gnathos sclerotized laterally, crossing anterior margin of tegumen, membranous anteriorly. Tegumen widened medially, concave anteriorly; lateral arm narrowed anteriorly, shorter than median width. Valva with basal half uniformly wide, widened from middle to apex, with a small setose pad at base; apex obtusely rounded, produced dorsoapically, with long setae; ventral margin heavily sclerotized, forming a wide band with a spine-shaped apical process ca. 2/5 length of uncus, directing downward, almost forming a right angle with ventral margin; costa widely banded, reaching pre-apex of valva; transtilla weakly sclerotized, indistinctly joined by membrane medially. Sacculus sub-rectangular, shorter than width, broadly overlapped ventrally; apex heavily sclerotized, with dense setae. Saccus wide at base, narrowed from base to rounded apex, slightly longer than uncus. Juxta slender, arched in C-shape. Phallus longer than valva, basal half uniformly wide, weakly sclerotized; distal half mostly membranous, with fine wrinkles; long and wide banded plate from before apex far exceeding apex, widened and truncate apically; cornuti being two large spines joined at base.

Female genitalia (Fig. 40 ). Papillae anales sub-quadrate, setose. Apophyses posteriores approximately 3.0 × length of apophyses anteriores. Eighth sternal plate spiculate, emarginate at middle on posterior margin, with sparse setae, straight on anterior margin. Lamella antevaginalis U shaped; lateral arm widened laterally, forming two large fan-shaped plates, arched and serrate on inner margin, obliquely straight on outer margin, convex on anterior margin. Antrum quadrate. Ductus bursae membranous; ductus seminalis arising from ductus bursae, dilated basally. Corpus bursae almost as long as ductus bursae, rounded, densely spiculate; signum absent.

Distribution.

Hainan (Bawangling, Jianfengling, Mt. Limu, Mt. Wuzhi, Yinggeling).

Etymology.

The specific epithet is derived from the Latin parilis (adj., evenly wide), referring to the evenly wide uncus.

Figures

Figures 12 - 19. Male adults of Meleonoma spp. 12 M. ornithorrhyncha sp. nov. 13 M. parilis sp. nov. 14 M. quadritaeniata sp. nov. 15 M. bidentata sp. nov. 16 M. apicirectangula sp. nov. 17 M. conica sp. nov. 18 M. puncticulata sp. nov. 19 M. robustispina sp. nov. All holotypes. Scale bars: 2.0 mm.

Figures 28 - 35. Male genitalia of Meleonoma spp. 28 M. ornithorrhyncha sp. nov., slide No. YAH 15446 29 M. parilis sp. nov., slide No. YAH 15444 30 M. quadritaeniata sp. nov., slide No. YAH 15450 31 M. bidentata sp. nov., slide No. ZXJ 18110 32 M. apicirectangula sp. nov., LJ 17529 33 M. conica sp. nov., slide No. LJ 17553 34 M. puncticulata sp. nov., slide No. YAH 15063 35 M. robustispina sp. nov., slide No. ZXJ 19014. 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).