Meleonoma ventrisinuata Wang, 2021

Wang, Shuxia, Zhu, Xiaoju & Tao, Zhulin, 2021, Study of the genus Meleonoma Meyrick, 1914 (Lepidoptera: Autostichidae) from China (III), with descriptions of eighteen new species, Zootaxa 4995 (2), pp. 303-333 : 332

publication ID	https://doi.org/ 10.11646/zootaxa.4995.2.5
publication LSID	lsid:zoobank.org:pub:5F060FBC-3CD8-4329-8B2A-F26FEFB16A5D
DOI	https://doi.org/10.5281/zenodo.5057171
persistent identifier	https://treatment.plazi.org/id/1D0E87CF-5610-FFDB-FF3F-FF0728ED7087
treatment provided by	Plazi
scientific name	Meleonoma ventrisinuata Wang
status	sp. nov.

Treatment

Meleonoma ventrisinuata Wang , sp. nov.

( Figs 20 View FIGURES 15‒20 , 38 View FIGURES 33‒38 , 49 View FIGURES 44‒49 )

Type material. CHINA, Yunnan: Holotype • ♂, Yexianggu (22.17°N, 100.87°E), Xishuangbanna, 762 m, 10.VII.2015, leg. K.J. Teng & X. Bai, slide No. YAH15385. GoogleMaps

Paratypes (14♂ 11♀): • 2♂ 1♀, other same data as holotype except dated 8–10.VII.2015, slide No. YAH15386 GoogleMaps ♀; • 2♂, 19–20.VII.2014, other same data as holotype GoogleMaps ; • 1♀, Taiyanghe National Forest Park, Pu’er, 1450 m, 5.VII.2015, leg. K.J. Teng, slide No. YAH15387 ; • 1♂, Menghai , Jinghong City, 640 m, 2.VIII.2016, leg. K.J. Teng et al .; • 6♂ 2♀, Mt. Ji’nuo , Jinghong, 1003 m, 26–29.VII.2019, leg. K.J. Teng et al .; • 1♂, Damanlu Village , Menghai, 1128 m, 2.VIII.2019, leg. K.J. Teng et al .; • 2♂ 7♀, Lagu Village , 1417 m, 5–6.VIII.2019, leg. K.J. Teng et al .

Diagnosis. The new species is similar to M.stictifascia ( Wang, 2003) in the male genitalia. It can be distinguished by the valva without an apical spine, and the costa with a semicircular process at distal 2/5; in the female genitalia by the corpus bursae 1.5 times length of the ductus bursae. In M. stictifascia , the valva has an apical spine, and the costa lacks a process ( Wang 2003: 206, fig. 15); and the ductus bursae is longer than three times length of the corpus bursae in the female genitalia ( Wang 2003: 206, fig. 16).

Description. Adult ( Fig. 20 View FIGURES 15‒20 ). Forewing length 4.1‒5.2 mm.

Head: frons yellow; vertex and occiput greyish black, mixed with yellow. Labial palpus yellow; first segment with dense blackish-grey scales on outer surface; second segment with scattered blackish-grey scales at distal 1/3, ringed with blackish-grey apically; third segment shorter than second segment, with a black dot at middle on dorsal surface. Antenna: scape blackish grey mixed with yellow; flagellum blackish grey, annulated with yellow on ventral surface and in distal 1/5 on dorsal surface.

Thorax and tegula greyish black. Forewing with costal margin arched, apex rounded; ground color greyish black; median fascia yellow, from before middle of costal margin gradually widened and obliquely outward to above distal 1/3 of fold; distal spot at about distal 1/4, yellow mixed with blackish-grey scales, posteriorly diffused to median fascia, forming a large crescent patch on the wing; plical spot small, at distal 1/3 of fold; discal and discocellular spots black, placed at inner margin of median fascia and at outer margin of cell respectively; fringe greyish black. Hindwing and fringe blackish grey. Legs pale yellow, with exceptions on ventral surface: coxa of foreleg with scattered blackish-brown scales, tibia blackish brown mixed with yellow scales, tibiae of mid- and hindleg blackish brown except yellow at middle and at apex, tarsi of fore- and midlegs blackish brown except yellow at base of basal tarsomere and at apices of basal two and apical one tarsomeres, tarsus of hindleg on outer surface with basal three tarsomeres blackish brown except yellow at apices, all femora with scattered blackish-brown scales.

Male genitalia ( Fig. 38 View FIGURES 33‒38 ). Uncus sub-lanceolate, with dense short setae in distal 2/3, rounded at apex. Tegumen narrow, inverted V-shaped; lateral arm elongate, curved, heavily sclerotized along outer and anterior margins. Valva narrowed basally and distally, widened ventromedially, rounded apically, with dense long setae distally, sinuate on ventral margin; slender process arising from near base extending outward, curved basally and extending slightly ventrad distally, forming a broad U shape; costa wide, with two processes arising from below: one from below base extending ventrad, spoon-shaped, narrowed and curved basally, dilated distally, the other process from about distal 2/5 extending dorsad, large, sub-triangular, exceeding costal margin apically; transtilla being a short slender bar. Valva slightly asymmetrical: left valva broader, basal process shorter, not reaching costal process, ventral margin slightly concave at middle; right valva narrower, obtusely produced ventrally before middle, widely concave at middle. Sacculus quadrate, dorsoapically produced to a large slender process curving downward distally, pointed apically. Saccus shorter than uncus, small, sub-triangular. Juxta with lateral arm sub-triangular, wider basally, narrowed and extending obliquely outward distally. Aedeagus longer than valva, distal 1/3 with a wide sclerotized band ventrally, with a narrow arched sclerite dorsally; cornutus being a long spine.

Female genitalia ( Fig. 49 View FIGURES 44‒49 ). Papillae anales sub-rectangular, setose. Apophyses posteriores approximately 2.5 times length of apophyses anteriores. Eighth sternal plate spiculate, posterior margin arched, with a row of long setae, shallowly concave at middle. Lamella antevaginalis small, narrowed outward from middle, obtusely rounded on posterior margin, slightly concave at middle on anterior margin. Ductus bursae entirely sclerotized, evenly wide. Corpus bursae 1.5 times length of ductus bursae, ovate, with dense spicules, with a densely toothed, fan-shaped sclerite at entrance; ductus seminalis arising from posterior part of corpus bursae; signum absent.

Distribution. China (Yunnan).

Etymology. The specific epithet is derived from the Latin ventr- and sinuatus, referring to the shape of the valva in the male genitalia.