Meleonoma segregnatha Wang & Zhu 2020, sp. nov.
Creators: name: Wang, Shuxia
name: Zhu, Xiaoju
Publisher: name: Zenodo
Year: 2020
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Lepidoptera
Cosmopterigidae
Meleonoma
Meleonoma segregnatha

description: Meleonoma segregnatha sp. nov.
(Figs 19, 41, 52)
urn:lsid:zoobank.org:act: 06ABA91E-6709-461B-90A2-0F2D50E5EB9B
Type material. CHINA, Zhejiang: Holotype ♂, Jiufu Village (30.09°N, 118.93°E), Mt. Longtang, 520 m, 28.VIII.2014, leg. AH Yin et al., slide No. ZXJ19136 (NKU). Paratypes (30♂ 9♀): 24♂ 6♀, 27.VIII–31.VIII.2014, other same data as holotype, slide Nos. ZXJ19132♂, ZXJ19163 ♀; 1♂, Mt. Tianmu, 365 m, 26. VI.2013, leg. AH Yin & XC Wang; 2♂ 1♀, Qianjiangyuan, Mt. Tianmu, 866 m, 8‾ 9.VII.2014, leg. AH Yin et al.; 1♀, Lao′an, Mt. Tianmu, 555 m, 17.VIII.2014, leg. AH Yin et al.; 1♂, Longxushan Village, Mt. Longxu, 778 m, 22.VIII.2014, leg. AH Yin et al.; Fujian: 2 ♂, Mt. Tianzhu, Xiamen, 43 m, 13–15.VII.2010, leg. BB Hu & J Zhang; 1♀, Xiamen University, 85 m, 14.VIII.2011, leg. J Zhang & ZB Wang (NKU).
Diagnosis. The new species is similar to M. flavifasciana Kitajima et Sakamaki, 2019 in the male genitalia, but can be distinguished by the conic uncus pointed at apex, and the valva slightly narrowed from base to obtuse apex, the saccus 1.6 times the length of the uncus; in M. flavifasciana, the papillary uncus is obtuse at apex, the valva is widened distally, and the saccus is 7.5 times the length of the valva (Kitajima & Sakamaki 2019: 41, figs 14‾15). It is also similar to M. acutata sp. nov. and M. compacta sp. nov. in the male genitalia, and the differences between them are stated in the diagnosis of M. acutata and M. compacta.
Description. Adult (Fig. 19). Forewing length 4.0‾ 4.5 mm.
Head blackish brown, occiput with yellow scales laterally. Labial palpus yellow; second segment mixed with blackish-brown scales, forming a blackish-brown ring at apex; third segment mixed with blackish-brown scales medially, nearly 3/4 as long as second segment. Antenna blackish brown, scape yellow apically, flagellum annulated with yellow on ventral surface.
Thorax and tegula blackish brown, tinged with yellow. Forewing blackish brown, with yellow spots; costal margin with inner yellow spot sub-elliptical, extending from basal 1/3 obliquely outward to middle of cell, outer yellow spot inverted triangular, extending from distal 1/3 to beyond anterior angle of cell, with a black dot in middle anteriorly; dorsal yellow spot small, diffused; fold with a black spot at distal 1/3, bordered by yellow scales on outer margin; cell with a diffused black spot at about middle, situated at inner margin of inner yellow spot, with black spot before anterior angle and below posterior angle respectively, between them placed a large yellow spot; fringe blackish brown. Hindwing and fringe yellowish brown. Legs yellow on dorsal surface; blackish brown on ventral surface, except tibiae yellow apically, tarsi of fore- and midlegs yellow at base of basal tarsomere and at apices of basal two tarsomeres, hind tarsus yellow at apices of basal four tarsomeres.
Male genitalia (Fig. 41). Uncus conic, straight, evenly narrow except pointed apically. Gnathos heavily sclerotized laterally, obtusely angled posterolaterally. Tegumen inverted V-shaped, extremely narrowed at middle; lateral arm about same width except narrowed at apex. Valva wide at base, slightly narrowed from base to obtuse apex, with large setae in costal and apical areas; ventral margin heavily sclerotized, forming an evenly wide band, with a setose tuberous process at middle, with a strong spine at apex curving downward and exceeding apex of valva; costa slightly concave at base; transtilla absent. Sacculus very short, not separated from valva, distal 1/3 heavily sclerotized, densely setose; apex straight, with several denticles; ventral margin sclerotized. Saccus triangular, narrowly rounded at apex, 1.6 times length of uncus. Juxta narrowly banded, arched in U-shape. Aedeagus nearly twice as long as valva, basal 1/3 tubular, dorsally produced to a rectangular plate from basal 1/3 to before distal 1/3; distal 2/5 inflate elliptically, with wrinkles and tightly compact fine spines; cornutus absent.
Female genitalia (Fig. 52). Papillae anales sub-quadrate, setose. Apophyses anteriores approximately 1/2 as long as apophyses posteriores. Eighth tergite slightly obtuse on posterior margin, slightly concave medially on anterior margin. Eighth sternal plate medially with a narrow groove extending from posterior margin to above anterior margin, with long setae on posterior margin. Lamella antevaginalis with ventral surface cylindrical, narrowly and deeply incised from anterior margin in middle, extended and curved outward laterally; dorsal surface narrowly banded, arched backward medially, inverted V-shaped. Ductus bursae about 1/3 as long as corpus bursae, membranous; ductus seminalis arising from near entrance of ductus bursae. Corpus bursae pyriform, membranous; signum placed near bottom of corpus bursae, elliptical, with dense denticles and a large spine.
Distribution. China (Fujian, Zhejiang).
Etymology. The specific epithet is derived from the Latin segre- and gnathus, referring to the gnathos not joined anteromedially.
description: Published as part of Wang, Shuxia & Zhu, Xiaoju, 2020, Study of the genus Meleonoma Meyrick, 1914 (Lepidoptera: Autostichidae) from China, with descriptions of twenty-one new species (II), pp. 257-289 in Zootaxa 4881 (2) on pages 276-277, DOI: 10.11646/zootaxa.4881.2.3, http://zenodo.org/record/4283658