Edosa varians Yang, Wang & Li

Yang, Linlin, Wang, Shuxia & Li, Houhun, 2014, A taxonomic revision of the genus Edosa Walker, 1886 from China (Lepidoptera, Tineidae, Perissomasticinae), Zootaxa 3777 (1), pp. 1-102 : 14-16

Edosa varians Yang, Wang & Li , sp. nov.

( Figs 1 , 7−12 , 19 a, 23, 54, 80)

Type material. Holotype ♂, CHINA: Nanyong (22°14΄N, 113°51΄E), Hong Kong, 135−150 m, 18.iv.2007, leg. Houhun Li et al., genitalia slide No. YLL11153.

Paratypes: CHINA: Hong Kong: 45 ♂, 9 ♀, Kadoorie Agricultural Research Centre (22°25΄N, 114°06΄E), 210 m, 9−21.iv.2007, leg. Houhun Li et al., genitalia slide Nos. XYL08075m, YLL11176, NKYLL 014m, XYL08076f, YLL11158f; 2 ♂, same place but 340−455 m, 14.iv.2007; 8 ♂, 3 ♀, same data but 17,20,23,26,27. ix.2009, genitalia slide No. YLL11183; 2 ♂, same data but 315−575 m, 26.ix.2009; 3 ♂, 3 ♀, Weihaishanzhuang, Dabu (22°26΄N, 114°09΄E), 50−60 m, 20.iv.2007, leg. Houhun Li et al., genitalia slide No. YLL11159f; 4 ♂, 1 ♀, same data but 60 m, 27.ix.2009; 3 ♂, 1 ♀, Shaluodong, Dabu, 225 m, 16.ix.2009, leg. Houhun Li et al.; 6 ♂, 1 ♀, Mt. Maoer, Dabu, 690 m, 23.ix.2009, leg. Houhun Li et al.; 2 ♀, Dagangzai, Xigong (22°24΄N, 114°19΄E), 140 m, 15.iv.2007, leg. Houhun Li et al.; 5 ♀, Pingdun (22°23΄N, 114°17΄E), Dawangzai, 140 m, 19.ix.2009, leg. Houhun Li et al.; 1 ♂, 1 ♀, Gaotang, Xigong, 100 m, 25.ix.2009, leg. Houhun Li et al.; 2 ♀, Dalanhu, Haoyong, Xigong, 105 m, 24.ix.2009, leg. Houhun Li et al.; 6 ♂, Nanyong (22°14΄N, 113°51΄E), 135−150 m, 18.iv.2007, leg. Houhun Li et al., genitalia slide No. XYL08078; 1 ♀, same place but 35 m, 21.ix.2009, leg. Houhun Li et al.; 3 ♂, 3 ♀, Huanglongkeng, Mt. Dayu (22°16΄N, 113°56΄E), 130m, 18.ix.2009, leg. Houhun Li et al. Guangdong Province: 1 ♂, Mt. He (22°45'N, 112°57'E), 16.vii.2002, leg. Guilin Liu, genitalia slide No. XYL04220; 1 ♂, Mt. He, 6.viii.2002, leg. Guilin Liu & Hong Pang, genitalia slide No. XYL10221; 1 ♂, Mt. He, 28.viii.2002, leg. Guilin Liu, Fenglong Jia & Haidong Chen, genitalia slide No. XYL04219; 7 ♂, Mt. He, 9,10. x.2002, leg. Guilin Liu & Binglan Zhang, genitalia slide Nos. XYL03172, XYL04232; 1 ♀, Hebao Island, Zhuhai (21°52'N 113°09'E), 30 m, 16.v.2010, leg. Bingbing Hu & Jing Zhang, genitalia slide No. YLL11121; 1 ♀, Mt. Lianhua (23°01'N 115°16'E), Dongguan, 120 m, 3.xi.2003, leg. Dandan Zhang, genitalia slide Nos. YLL 12139 m, YLL12151f; 6 ♂, Mt. Lianhua, Dongguan, 120 m, 20,21. iv.2004, leg. Dandan Zhang, genitalia slide No. YLL12141; 1 ♂, Mt. Lianhua, Dongguan, 21.vi.2002, leg. Guilin Liu; 1 ♂, Yangmei, Gaoming (22°53'N 112°50'E), 23.iv.2006, leg. Dandan Zhang. Guangxi Zhuang Autonomous Region: 7 ♂, 5 ♀, Qingshan Yard (22°08΄N, 106°44΄E), Pingxiang, 300 m, 20−23.vii.2011, leg. Bingbing Hu, genitalia slide Nos. YLL 11056 m, YLL1157f; 1 ♂, Nonggang, Longzhou (22°28΄N, 106°57΄E), 271 m, 19.iv.2012, leg. Jinwei Li, genitalia slide No. YLL12149. Hainan Province: 2 ♂, Datian Conservation Zone (19°42΄N, 109°47΄E), 25 m, 30.xi −2.xii.2009, leg. Zhaohui Du & Linlin Yang, genitalia slide Nos. YLL10028, YLL10078; 1 ♀, Datian Conservation Zone, 100 m, 28.iv.2009, leg. Qin Jin & Bingbing Hu, genitalia slide No.YLL10094; 4 ♂, 2 ♀, Mt. Duowen (19°48΄N, 109°45΄E), 120 m, 1−3.v.2009, leg. Qin Jin & Bingbing Hu, genitalia slide Nos. YLL 10041 m, YLL 10054 m, YLL 10055 m, YLL10237f, YLL10235f; 3 ♂, Jiaxi Conservation Zone (18°49΄N, 109°10΄E), 220 m, 14.xii.2009, leg. Zhaohui Du & Linlin Yang, genitalia slide Nos. YLL10038, YLL10082, YLL10089; 1 ♂, 2 ♀, Nancha River, Mt. Bawang (19°04′N 109°02′E), 600 m, 9,10. vi.2007, leg. Zhiwei Zhang & Weichun Li, genitalia slide Nos. XYL08061m, XYL08062f; 1 ♂, 1 ♀, Xinzhong Farm, Wanning (18°51΄N, 110°11΄E), 110 m, 3.viii.2008, leg. Bingbing Hu & Li Zhang, genitalia slide Nos. YLL 10072 m, YLL10073f; 1 ♂, 1 ♀, Liulianling (18°57΄N, 110°26΄E), Wanning, 100 m, 24,25. vii.2008, leg. Bingbing Hu & Li Zhang, genitalia slide Nos. YLL 10234 m, YLL10056f; 1 ♂, 1 ♀, Mt. Qixian (18°41΄N, 109°41΄E), 10.xi.2009, leg. Bingbing Hu & Jing Zhang, genitalia slide No. YLL 10057 m; 1 m, Mt. Yingge (19°02΄N, 109°33΄E), 620 m, 6.iv.2010, leg. Bingbing Hu; 1 ♀, Mt. Yingge, 620 m, 21.vi.2010, leg. Bingbing Hu & Jing Zhang, genitalia slide No. YLL10238; 1 ♂, 4 ♀, 13, 25.ix.2010, leg. Bingbing Hu, genitalia slide No. YLL 11185 m. Hunan Province: 2 ♂, 1 ♀, Mt. Shunhuang, Dong’an (26°22'N 111°09'E), 20−22.v.2007, leg. Min Wang & Liusheng Chen, genitalia slide Nos. YLL 10241 m, YLL 10242 m, YLL11186f. Yunnan Province: 1 ♂, 1 ♀, Rare Botanical Garden, Ruili (24°00'N 97°50'E), 1000 m, 5, 7.VIII.2005, leg. Yingdang Ren, genitalia slide No. YLL10099f; 1 ♂, Botanical Garden, Xishuangbanna (21°55'N 101°16'E), 531 m, 15.viii.2010, leg. Yinghui Sun & Lixia Li, genitalia slide No. YLL10115; 1 ♂, Mengyuan, Mengla County, Xishuangbanna, 640 m, 13.viii.2010, leg. Yinghui Sun & Lixia Li, genitalia slide No.YLL10117; 1 ♂, 2 ♀, Menglun, Xishuangbanna, 24, 25.x. 2010, 750 m, leg. Bingbing Hu, Jing Zhang & Yanpeng Cai, genitalia slide No. YLL10239f; 1 ♂, 1 ♀, Chengguan, Luxi (24°26'N 98°35'E), 13, 20.iv.1982, genitalia slide Nos. XYL03135m, XYL03128f; 1 ♂, Wanting (24°06'N 98°04'E), 22.iv.1982, genitalia slide No. XYL03132; 1 ♂, Mt. Wuliang (24°16'N 100°48'E), Jingdong, 18.v.1982, leg. Qian Du, genitalia slide No. XYL03132; 1 ♂, 1 ♀, Bawan (24°56'N 98°53'E), Baoshan, 1040 m, 9.viii.2007, leg. Dandan Zhang, genitalia slide Nos. YLL 12148 m, YLL12147f.

Diagnosis. This new species is similar to E. aurea sp. nov. in the male and female genitalia, but can be easily separated by the dusty yellow or yellowish brown forewing, which is glossy golden cream in E. aurea sp. nov. The defining genital feature of the two species is the costal margin of the valva with a triangular or hillock-shaped process bearing finely rugose nodules in E. varians sp. nov., but with an excurved, ovate flap in E. aurea sp. nov.

Description. Adult ( Fig. 23 ). Wingspan 12.0−34.0 mm. Head dusty yellow to orange yellow. Antenna dusty yellow, 0.9× length of forewing; scape without pecten, flagellum unicolorous. Labial palpus with second segment yellowish white on inner surface, third segment dusty yellow, with scattered darker scales. Thorax and tegula dusty yellow to dark brown. Forewing index 0.3−0.35, uniformly dusty yellow or yellowish brown with dark-tipped individual scales; retinaculum present; cilia brown with darker tips, with three ill-defined cilia lines. Hindwing grayish brown with slight bronzy or purple iridescence; male with a single short, slender, evenly curved frenular bristle, female with two slender bristles, shorter one 0.8× length of longer one; cilia pale yellowish brown. Fore and mid legs blackish brown except brown mixed with darker scales on mid tarsus; hind leg yellowish brown mixed with darker scales.

Pregenital abdomen. First tergum with posterior 2/3 sclerotized. In male, coremata present in eighth segment; eighth sternite 0.5× as long as wide, posterior margin gently concave, without caudal process; eighth tergite trapezoidal, without caudal process in male. In female, seventh sternite semicircularly concave at middle on posterior margin.

Male genitalia ( Fig. 54 ). Vinculum gently concave on both margins; medial process absent from ventrocaudal margin. Tegumen as deep as vinculum, deeply concave at middle on anterior margin, convex at middle on posterior margin. Uncus with shouldered base touching each other, forming a heart-like membraneous section with tegumen; uncus lobe as long as depth of vinculum, twisted at base, with sparse setae dorsally, strongly contorted and overlapped in distal 1/4, forming a sclerotized, bean sprout-shaped section with a small melanized nodule; sclerite absent between uncus lobes. Valva subtriangular, variable, broad at base, narrowed to acute or blunt apex or to a mastoid distal process; costal margin with a small to large, triangular to hillock-shaped process bearing finely rugose nodules; basal flange absent; ventral margin with obvious, hillock-shaped ventral lobe in basal 2/3; basal margin with ‘secondary apodeme’ close to apodeme, represented only by a shallow convexity; inner surface unmodified. Juxta angled caudally, flat, trapezoidal, 0.5× length of aedeagus. Aedeagus stout, slightly bent ventrad, with very shallow dorsal emargination; double-walled: inner wall tubular, outer wall forming slender, triangular carinae subapically. Bulbus ejaculatorius 8.0−11.0× length of aedeagus, subdistal section semicircularly hypertrophied, distal section hypertrophied, 0.5× width of subdistal section, deep cup-shaped.

Female genitalia ( Fig. 80 ). Ovipositor length 2.0−3.5 mm. Eighth tergite tapered, anterior margin triangularly convex, posterior margin concave at middle and with sparse setae; microtrichiate on medial 1/4 and dorsal midline. Eighth sternite gently concave and with sparse setae on posterior margin, straight on anterior margin; a pair of small, knuckle-shaped processes posterior to eighth sternite. Ostium at middle of posterior margin of eighth sternite. Antrum absent; ductus bursae 1.3× length of corpus bursae, anterior 1/5 slightly broadened. Colliculum comprising a series of five rings, fourth ring thickly membraneous, others strongly sclerotized; first ring at anterior 1/6 of ductus bursae, broadly flanged, flower-like, with a pair of digitate processes invaginated into ductus bursae to level of second ring; second ring at junction of ductus bursae and corpus bursae, broad, protruded ventrally; third ring close to second ring, skirt-like, narrower than second ring; fourth ring elongate, strongly bent in some specimens; fifth ring flared anteriorly to form flanges which encircle and support corpus bursae; inception of ductus seminalis beneath postero-ventral margin of second ring. Corpus bursae thickly membraneous posteriorly by presence of colliculum, thinly membraneous anteriorly; signum absent.

Distribution. China (Guangdong, Guangxi, Hainan, Hong Kong, Hunan, Yunnan).

Etymology. The specific name is derived from the Latin varians , meaning variable, referring to the intraspecific variations of the valva.

Remarks. The valva of this species varies considerably: the apex may be acute ( Fig. 54 c) or blunt ( Fig. 54 d) or being a mastoid process ( Figs 54 a, b); the ventral margin may be either concave at middle ( Figs 54 c, d) or not concave ( Figs 54 a, b); the process on the costal margin may arise from between basal 1/4 and middle, large and hillock-shaped ( Fig. 54 b), or from between basal 1/3 and middle or just from middle, widened triangularly ( Figs 54 a, c), or from middle, small and triangular ( Fig. 54 d), and it is on the costal margin ( Figs 54 a, c) or slightly intruded into the inner surface of the valva ( Figs 54 b, d).

In some females, the fifth collicular ring is absent, and thus the anterior region of the corpus bursae is not separated into two parts ( Fig. 80 a). The thinly membraneous region is easily missing during dissection.

Figures

FIGURE 1. Distribution of Chinese Edosa spp. hemichrysella - group: ■ E. bicolor sp. nov.; subochraceella - group: ● E. subochraceella, ▲ E. smithaella, ★ E. varians sp. nov., ♦ E. aurea sp. nov., ♥ E. torta sp. nov.

FIGURES 19. Juxta, aedeagus and bulbus ejaculatorius of Edosa spp. a, E. varians sp. nov.; b, E. crayella; c, E. conchata sp. nov.; d, E. hendrixella; e, E. hamata sp. nov.; f, E. curvidorsalis sp. nov. (The number indicates character and its state as shown in Appendix 1; slide numbers same as male genitalia shown in figures 52 − 79).

FIGURES 54. Male genitalia of Edosa varians sp. nov., paratype, slide No. YLL 10242, (a − d, variation of valva, slide Nos. a, XYL 03172; b, XYL 03131; c, YLL 10117; d, YLL 10057) (scale lines = 0.5 mm).

FIGURES 7 − 8. Morphology of Edosa varians sp. nov., paratype, slide No. NKYLL 014. 7, head; 8, venation (7, scale line = 0.5 mm; 8, scale line = 1.0 mm).

FIGURES 11 − 13. Morphology of Edosa spp. 11, metathorax, 11 a, metanotum (E. varians sp. nov., paratype, slide No. NKYLL 014); 12, Pregenital abdomen of male (E. varians sp. nov., holotype, slide No. YLL 11153); 13, Pregenital abdomen of female (E. aurea sp. nov., paratype, slide No. YLL 11175). (scale lines = 0.5 mm).

FIGURES 20 − 27. Adults of Edosa spp. 20, E. bicolor sp. nov., holotype, ♂; 21, E. subochraceella; 22, E. smithaella, ♂; 23, E. varians sp. nov., holotype, ♂; 24, E. aurea sp. nov., holotype, ♂; 25, E. torta sp. nov., holotype, ♂; 26, E. truncatula sp. nov., ♂; 27, E. hamata, sp. nov., holotype, ♂.

FIGURES 80 − 82. Female genitalia of Edosa spp. 80, E. varians sp. nov., paratype, slide No. YLL 11159 (80 a, variation of corpus bursae and colliculum, slide No. YLL 10094); 81, E. aurea sp. nov., paratype, slide No. YLL 11174 (81 a, variation of corpus bursae and colliculum, slide No. YLL 10236); 82, E. torta sp. nov., paratype, slide No. XYL 03133 (scale lines = 0.5 mm).