Neopseustis chentangensis S.Y. Huang & Chen, 2021
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publication ID |
https://dx.doi.org/10.3897/zookeys.1078.75461 |
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publication LSID |
lsid:zoobank.org:pub:4EE5081E-098A-433A-925E-594E33DC5BBA |
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persistent identifier |
https://treatment.plazi.org/id/9E16636E-F0EE-4738-9DD9-4A6259EB96B6 |
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taxon LSID |
lsid:zoobank.org:act:9E16636E-F0EE-4738-9DD9-4A6259EB96B6 |
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treatment provided by |
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scientific name |
Neopseustis chentangensis S.Y. Huang & Chen |
| status |
sp. nov. |
? Neopseustis chentangensis S.Y. Huang & Chen sp. nov.
Figures 1 View Figures 1, 2 , 3-10 View Figures 3–12
Type material.
Holotype: male, altitude 2600 m, 23.V.2021, Chentang Town, Dingjie County, Xigaze City, Xizang Autonomous Prefecture, P.R. China, leg. Siyao Huang, voucher number and dissection number CT1 (SCAU).
Diagnosis.
Externally, N. chentangensis resembles N. moxiensis Chen & Owada, 2009 (Fig. 2 View Figures 1, 2 , 11-12 View Figures 3–12 ) from Moxi, western Sichuan, share a fuscous ground colour on both wings. However, the new species can be immediately distinguished from N. moxiensis by the combination of the following characters: smaller size (length of forewing 8.7 mm vs 9 mm in holotype of N. moxiensis ), narrower forewing (slightly broader in N. moxiensis ), patches along forewing costa slenderer and darker (patches along forewing costa thicker and lighter in N. moxiensis ), narrower hindwing and light fuscous ground colour (broader hindwing and light yellowish brown ground colour in N. moxiensis ), and more uniform fringe in both wings (cilia clearly chequered, especially in hindwing in N. moxiensis ). In the male genitalia, N. chentangensis can be easily distinguished from N. moxiensis by the shape of the latero-posterior process of anellus, which is long, robust, and L-shaped; the distal end is deeply bifurcated and forms two sharp processes bending anteriorly (in N. moxiensis , the latero-posterior process of anellus is not L-shaped and bent anteriorly at the tip.). The tegumenal lobe is significantly slenderer after it is flattened (in N. moxiensis the tegumenal lobe is much broader when it is flattened), the valvae lack the uncinate process apically, and long and thick processes ventrally (both processes present in N. moxiensis ). The anterior arms of the vinculum are more slender (these arms are broader and shorter in N. moxiensis ). From the other congeners, N. chentangensis can be simply distinguished by the shape of its latero-posterior process of anellus mentioned above.
Description.
Adult: length of forewing 8.7 mm. Antennae brownish dorsally. Head, thorax, and abdomen uniformly brownish. Forewing nearly oval, apex slightly pointed. Forewing ground color pale yellowish fuscous, with four fuscous patches along costa to apex. Several irregular black or brownish transverse lines present in the median and submarginal zones. A row of brownish spots extending from apex to anal angle along termen. Fringe fuscous from apex to anal angle, slightly checkered with creamy white in dorsum. Hindwing oval, ground color uniformly light fuscous. Hindwing apex with light yellowish spot at the marginal zone. Fringe generally fuscous from apex to anal angle and slightly checkered with creamy white around anal angle.
Male genitalia: Uncus fused with tegumen, bifurcate basally and forming two short and distally rounded lobes. Gnathos strongly sclerotized thoroughly, consisting of a medially curved, short, and robust distal process and a large and thick base. Socii rounded, densely setose. Tegumenal lobe slightly curved outwards beyond the base and gradually narrowing towards its tip. Valvae totally fused with vinculum, broad and nearly trapezoid in natural shape. Vinculum broad posteriorly, abruptly narrowing anteriorly and forming long and slender arms. Lateroposterior process of anellus generally L-shaped, thick, and robust, with the tip deeply bifurcate and forming two sharp processes bending anteriorly. Two denticles present at the upper margin of dorsal process. Paired processes of anellus absent. Transverse bar in lateral view obtuse-triangular and slightly bending upwards near tip, while in dorsal and ventral views generally triangular with the lower angles shallowly bifurcate. Juxta in lateral view slightly curved outwards and nearly broad Y-shaped in dorsal and ventral views. Parameres short and setose-like, weakly sclerotized, situated between the two lateroposterior processes of anellus.
Female. Unknown at present.
Bionomics.
The holotype of N. chentangensis was spotted weakly flying above bushes during the daytime at an altitude about 2600 m. The collecting site (Fig. 13 View Figures 13, 14 ) is located at the edge of a forest along a road in a valley.
Distribution.
Currently only known from the type locality, Chentang Town (Fig. 14 View Figures 13, 14 ).
Etymology.
The specific epithet Neopseustis chentangensis is derived from the type locality, Chentang Town.
Molecular analysis.
The Kimura-2-parameter distance of the genus Neopseustis , based on COI barcoding, is given in Table S1. The maximum interspecific divergence occurred between N. chentangensis and N. moxiensis , which was 11.7%, and the minimum interspecific divergence occurred between N. fanjingshana and N. bicornuta , which was 1.5%. According to the table, N. chentangensis is genetically distinct from its congeners, with the genetic divergence varying from 7.6 to 11.5%. Based on the ML tree (Fig. 15 View Figure 15 ) constructed using the COI barcoding region, the genus Neopseustis was monophyletic (UFBS = 98), and subsequently diverged into four clades, with three of them receiving strong support (UFBS> 95). Neopseustis chentangensis was found to be sister to all the remaining taxa in the current study.
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