Tylostega pectinata Du & Li
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publication ID |
https://doi.org/ 10.5281/zenodo.180403 |
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DOI |
https://doi.org/10.5281/zenodo.6230924 |
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persistent identifier |
https://treatment.plazi.org/id/CC169D2B-FF8F-FFF4-79F5-A46AFAE8FDCA |
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treatment provided by |
Plazi |
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scientific name |
Tylostega pectinata Du & Li |
| status |
sp. nov. |
Tylostega pectinata Du & Li , sp. nov.
( Figs. 2 View FIGURES 1 – 5 , 9 View FIGURES 8 – 12 , 14 View FIGURES 13 – 17 , 19 View FIGURES 18 – 21 )
Type specimens. Holotype ɗ, CHINA: [label 1] “Li Shan (35°25' N, 111°58' E), Shanxi Province / 1520 m elev. / 19. VIII. 2006 / leg. Xu Zhang & Haiyan Bai”; [label 2] “genitalia slide ɗ / DXC06352”; [label 3, red] “ Holotype ɗ / Tylostega / pectinata / Du et Li”. Paratypes: 7 ɗ, 5 Ψ, Wufeng Tujiazu Autonomous County (30°12' N, 116°40' E), Hubei Province, 1100 m, 10–12. VII. 1999, leg. Houhun Li et al.; 1 ɗ, 4 Ψ, Hefeng County (29°53' N, 110°02' E), Hubei Province, 1260 m, 15–17. VII. 1999, leg. Houhun Li et al.; 4 ɗ, 1 Ψ, Xianfeng County (29°40' N, 109°08' E), Hubei Province, 1280 m, 21–22. VII. 1999, leg. Houhun Li et al.; 4 ɗ, Xishui County (28°19' N, 106°12' E), Guizhou Province, 500 m, 31. V. 2000 –3. VI, 1200 m, 1. VI. 2001, leg. Yanli Du; 2 ɗ, Chishui (28°34' N, 105°42' E), Guizhou Province, 390 m, 28, 30. V. 2000, leg. Yanli Du; 1 Ψ, Chishui (28°34' N, 105°42' E), Guizhou Province, 240 m, 22. IX. 2000, Haili Yu; 1 Ψ, Xishui County (28°19' N, 106°12' E), Guizhou Province, 28. IX. 2000, leg. Haili Yu; 1 Ψ, 6 ɗ, Daozhen Autonomous County (28°53' N, 107°36' E), Guizhou Province, 600–1370 m, 18–25. VIII. 2004, leg. Yunli Xiao; 1 ɗ, Wen County (32°58' N, 104°41' E), Gansu Province, 2000 m, 5. VII. 2001, leg. Houhun Li & Xinpu Wang; 4 ɗ, 1 Ψ, Tianshui (34°37' N, 105°42' E), Gansu Province, 1331 m, 28–30. VII. 2006, leg. Xinpu Wang & Xiangfeng Shi; 1 Ψ, Weishan Yizu Huizu Autonomous County (25°14' N, 100°18' E), Yunnan Province, 2200 m, 21. VII. 2001, leg. Houhun Li & Xinpu Wang; 1 ɗ, 2 Ψ, Fangchenggang (21°37' N, 108°20' E), Guangxi Zhuangzu Autonomous Region, 640 m, 8. IV. 2002, leg. Shulian Hao & Huaijun Xue; 1 ɗ, 1 Ψ, Daiyun Shan (25°47' N, 118°15' E), Fujian Province, 850 m, 15. IX. 2002, leg. Xinpu Wang; 2 ɗ, Wuyi Shan (26°54' N, 116°42' E), Fujian Province, 1100 m, 22. V. 2004, 600 m, 27. V. 2004, leg. Haili Yu; 1 ɗ, Huangshan (29°43' N, 118°18' E), Anhui Province, 6. VIII. 2004, leg. Jiasheng Xu & Jialiang Zhang; 5 ɗ, 2 Ψ, Yiyang County (34°31' N, 112°10' E), Henan Province, 1000 m, 28–30. VII. 2006, leg. Denghui Kuang & Hui Zhen.
Diagnosis. This species is similar to T. tylostegalis (Hampson) superficially, but can be distinguished by the valva with a large quadrate projection medially, the dorsal margin of the sacculus smooth and concave at basal 1/3, the juxta with a strong fingerlike process posterolaterally, and the phallus with two spinelike and one pectinate cornuti in the male genitalia. In T. tylostegalis the valva has a small triangular projection at middle, the dorsal margin of the sacculus bears small teeth and is not concave at basal 1/3, the juxta has no strong fingerlike process, and the phallus has three spinelike cornuti.
Description. Adult ( Fig. 2 View FIGURES 1 – 5 ). Wing span 18.0–21.0 mm. Frons yellowishwhite or pale yellow except fuscous anteriorly. Antenna with ventral cilia about as long as diameter of flagellomeres in male, minute in female. Labial palpus white or yellowishwhite, 2nd segment brown or fuscous dorsally and distally, 3rd segment yellowishwhite or pale yellow. Patagium yellowishwhite, with some brown scales. Thorax yellowishwhite or pale yellow dorsally, each segment with a fuscous blotch. Tegula yellowishwhite or pale yellow, diffused with brown. Forewing pale yellow mixed with brown, with fuscous or black patches at base; discoidal stigma and lines blackishfuscous; lines broader and darker on costa; antemedial line slightly excurved; postmedial line sinuous to CuA2, acutely retracted to lower cell, then to inner margin; a series of blackishfuscous spots along terminal margin. Hindwing yellowishwhite, with fuscous patch at base; discoidal stigma dark fuscous, reniform; a broad region consisting of brown patches extending from middle of inner margin obliquely to costal and terminal margins; terminal margin with some dark fuscous spots. Cilia of both fore and hindwings pale yellow or light brownishyellow, slightly darker at base. Abdomen with 1st segment white with two fuscous patches, the remainder pale yellow and suffused with fuscous on 2nd–5th segments dorsally; ventral surface white or yellowishwhite.
Male genitalia ( Figs. 9 View FIGURES 8 – 12 , 14 View FIGURES 13 – 17 ). Uncus about as high or higher than basal width. Valva slightly narrowed distally, medially with large and quadrate projection bearing dense small spines anteriorly. Sacculus concave at basal 1/3 on dorsal margin, arched in middle, sometimes slightly inflated triangularly at basal 2/3; distal part gradually narrowed, forming hook with two small flat processes. Saccus oval or triangular, bluntly rounded on anteriorly margin. Juxta rounded anteriorly, gradually broadened backwards, with strong fingerlike process posterolaterally. Phallus with two spinelike and one pectinate cornuti, one of the spinelike cornuti with two smaller spines medially in some specimens.
Female genitalia ( Fig. 19 View FIGURES 18 – 21 ). Apophysis anterioris about 1.5 times length of apophysis posterioris. Ductus bursae twisted; basal 1/3 more sclerotized and bearing strong thumblike process near base; basal part before process about 2 times width of remainder part; distal 2/3 with broad transverse stripes consisting of small granules. Corpus bursae about as long as ductus bursae, broader anteriorly.
Distribution. China (Shanxi, Henan, Hubei, Anhui, Fujian, Guizhou, Yunnan, Gansu).
Etymology. The specific name is derived from the Latin pectinatus = pectinate, in reference to the pectinate cornutus.
Remarks. Slight differences can be found within this species. The uncus is about as high or higher than its basal width. In the male specimens collected from Anhui, Fujian, Guangxi and Guizhou, the dorsal margin of the sacculus is slightly inflated triangularly at basal 2/3, the saccus is triangular with the anterior margin bluntly rounded, and the spinelike cornuti has no spines medially. While in the male specimens collected from Shanxi, Henan, Hubei, Yunnan and Gansu, the dorsal margin of the sacculus is not inflated triangularly at basal 2/3, the saccus is oval, and one of the spinelike cornuti has two smaller spines medially.
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