Edosa cornuta 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 : 34-35

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

( Figs 4 , 18 i, 40, 41, 71, 90)

Type material. Holotype ♂, CHINA: Mt. Tianzhu (24°35΄N, 117°55΄E), Xiamen, Fujian Province, 220 m, 27.ix.2010, leg. Yinhui Sun & Jing Zhang, genitalia slide No. YLL10190.

Paratypes: CHINA: Fujian Province: 1 ♂, 13 ♀, Mt. Tianzhu, Xiamen, 220 m, 6,8,14,17,19,25. ix.2010, leg. Yinhui Sun & Jing Zhang, genitalia slide Nos. YLL 10200 m, YLL10192f, YLL10187f, YLL10188f, YLL10189f; 1♂, 2 ♀, same data but 6−8.x.2010, genitalia slide Nos. YLL 10199 m, YLL10186f; 1♂, 2 ♀, Mt. Tianzhu, Xiamen, 13,19, 24.viii.2010, leg. Bingbing Hu & Jing Zhang, genitalia slide Nos. YLL10185f, YLL10198f. Guangxi Zhuang Autonomous Region: 1 ♂, 2 ♀, Qinmu (24°59΄N, 109°59΄E), Yongfu County, 3−5.v.2004, leg. Li Zhang & Hui Zhen, genitalia slide Nos. YLL09049m, YLL11001f; 3 ♀, Qingshan Yard (22°08΄N, 106°44΄E), Pingxiang, 300 m, 21.VII.2011, leg. Bingbing Hu; 1 ♂, 1 ♀, same data but 190 m, 27.vii.2011; 1 ♀, Fubo Yard (22°02΄N, 106°50΄E), Pingxiang, 550 m, 1.viii.2011, leg. Bingbing Hu; 1 ♀, Zhoutongcun, Nanpingxiang, Yizhou (24°21΄N, 108°52΄E), 450 m, 17.viii.2011, leg. Shulian Hao & Yinghui Sun. Hainan Province: 2 ♂, 3 ♀, Nancha River, Mt. Bawang (19°04′N 109°02′E), 600 m, 9,10. vi.2007, leg. Zhiwei Zhang & Weichun Li, genitalia slide Nos. XYL08063m, YLL 10039 m, YLL08064f, YLL10017f, YLL10018f; 1 ♂, 2 ♀, Mt. Jianfeng (18°50΄N, 108°43΄E), 940 m, 4,5. vi.2007, leg. Zhiwei Zhang & Weichun Li, genitalia slide Nos. XYL08105m, YLL10079f, YLL10081f; 1 ♂, Tianchi, Mt. Jianfeng, 12.vi.2010, leg. Bingbing Hu & Jing Zhang, genitalia slide No. YLL11019; 1 ♀, Mt. Yingge (19°02΄N, 109°33΄E), 620 m, 23.vi.2010, leg. Bingbing Hu & Jing Zhang, genitalia slide No. YLL10070; 1 ♀, same data but 6.vi.2010, leg. Bingbing Hu, genitalia slide No. YLL10088. Hunan Province: 1 ♂, Cangxi (27°43΄N, 111°19΄E), Xinhua County, 8.viii.2004, leg. Yunli Xiao, genitalia slide No. XYL04242. Yunnan Province: 6 ♂, 1 ♀, Rare Botanical Garden, Ruili (24°00'N 97°50'E), 1000 m, 5−8.viii.2005, leg. Yingdang Ren, genitalia slide Nos. XYL08070m, YLL 10100 m, YLL 10104 m, YLL 10138 m, YLL10103f. Zhejiang Province: 4 ♂, 2 ♀, Mt. Wuyan (27°21΄N, 119°55΄E), Taishun, 400 m, 1.viii.2005, leg. Yunli Xiao, genitalia slide Nos. XYL08073m, YLL 10182 m, YLL 10230 m, YLL10231f; 2 ♀, Mt. Wuyan, Taishun, 250 m, 4.viii.2005, genitalia slide Nos. YLL10010f, YLL10181f.

Diagnosis. This new species is similar to E. hendrixella Robinson, 2008 superficially, but can be distinguished from the latter by the short uncus lobe expanded in basal half, the knife-like valva, and the basal flange with two horned processes. In E. hendrixella , the elongate uncus is moderate in width, the valva is bottle-shaped, and the basal flange lacks the horn-like processes.

Description. Adult ( Figs 40, 41 ). Wingspan 9.0−14.0 mm. Vertex yellowish white, frons pale yellowish brown. Antenna 0.9× length of forewing; scape yellowish white, tinged with yellowish brown, with a few black pecten bristles; flagellum variegated, yellowish white on ventral surface, dark purplish brown on dorsal surface except first few segments yellowish white. Labial palpus yellowish brown on inner surface, dark brown on outer surface. Thorax and tegula blackish brown. Forewing index 0.25−0.3, coppery brown, individual scales dark tipped, especially obvious in distal 1/5; retinaculum present; cilia coppery brown with darker tips, with three welldefined cilia lines. Hindwing grayish brown; male with a single short, slender, evenly curved frenular bristle, female with two slender bristles, shorter one 0.4× length of longer one; cilia grayish white. Fore and mid legs blackish brown; hind leg yellowish brown, tarsus dark brown above.

Pregenital abdomen. First tergum without sclerotization. In male, coremata present in eighth segment; eighth sternite 0.3× as long as wide, without caudal process; eighth tergite with rounded, membraneous caudal process at middle on posterior margin. In female, seventh sternite deeply concave at middle on posterior margin, with a shallow pocket at each side of medial concavity.

Male genitalia ( Fig. 71 ). Vinculum straight on anterior margin, shallowly concave in broad V shape at middle on posterior margin; medial process on ventrocaudal margin short, Y-shaped, 0.4× length of depth of vinculum. Tegumen about 0.15× depth of vinculum, narrow band-like. Uncus with lobate base separated by membrane; uncus lobe small, short, 0.3× depth of vinculum, not twisted, basal half expanded, distal half digitate, melanized, strongly bent ventrad; sclerite present between uncus lobes, rhombic. Valva knife-like, basal half broad, sharply narrowed beyond middle, then gradually narrowed to rounded apex; costal margin straight, unmodified; basal flange large, basal 2/3 semicircular, outer margin smooth, concave inward medially, inner margin with basal 2/3 arched, bearing stout spines and setae, distal 1/3 rounded, with sparse setae, two horned, tip-melanized processes situated at about middle near inner margin; bridging lobe from basal 2/3 of basal flange to valva, very shallow; ventral margin convex, forming obvious ventral lobe in basal half, straight in distal half,; basal margin with large, triangular ‘secondary apodeme’ bearing stout setae, close to ventral margin; inner surface bearing peg-like sensillae apically. Juxta about 0.5× length of aedeagus, reflexed anteriorly along inner surface of vinculum, narrow, grooved in dorsal midline, usually folded laterally, Y-shaped when spreaded. Aedeagus short, 0.5× length of valva, slightly bent dorsad; double-walled: inner wall tubular, outer wall broad at base, narrowed to apex. Bulbus ejaculatorius 5.0× length of aedeagus, subdistal section slightly expanded and curved, distal section expanded, as broad as subdistal section.

Female genitalia ( Fig. 90 ). Ovipositor length 2.8 mm. Eighth tergite convex anteromedially, slightly concave on posterior margin, microtrichiate on posterior 1/3, with sparse setae in posterior 1/5. Eighth sternite deeply convex at middle on anterior margin, with a pair of horned processes at middle on posterior margin. Ostium longitudinal, 0.5× length of eighth sternite. Antrum indistinct; ductus bursae very narrow, 1.5× length of corpus bursae. Colliculum comprising a pair of ivory-shaped, apically spinose processes extending from junction of ductus bursae and corpus bursae, invaginated into corpus bursae to level of second ring; second ring at posterior 1/ 5 of corpus bursae, with a tongue-shaped ventral extension; a separate bowl-shaped sclerite placed anterior to tongue-shaped ventral extension; inception of ductus seminalis opposite to tongue-shaped extension of second ring. Corpus bursae with posterior 1/3 narrow, anterior 2/3 broadened and ovate; signum absent.

Distribution. China (Fujian, Guangxi, Hainan, Hunan, Yunnan, Zhejiang).

Etymology. The specific name is derived from the Latin cornutus, meaning horned, referring to the basal flange of the valva that bears two horned processes.

Figures

FIGURE 4. Distribution of Chinese Edosa spp. uncusella - group: ■ E. elongata sp. nov., ● E. conchata sp. nov., ▲ E. sinica, ★ E. cornuta sp. nov., ♦ E. hendrixella, ♥ E. robustispina sp. nov., ♣ E. uncusella sp. nov., ▼ E. semicircularis sp. nov.

FIGURES 18. Valva of Edosa spp. a, E. bicolor sp. nov.; b, E. robinsoni sp. nov.; c, E. curvidorsalis sp. nov.; d, E. longicornis sp. nov.; e, E. aurea sp. nov.; f, E. semicircularis sp. nov.; g, E. baculiformis sp. nov.; h, E. elongata sp. nov.; i, E. cornuta sp. nov.; j, E. minuta sp. nov.; k, E. digitata sp. nov.; l, E. orphnodes (The number indicates character and its state as shown in Appendix 1; slide numbers same as male genitalia shown in figures 52 − 79).

FIGURES 36 − 43. Adults of Edosa spp. 36, E. orphnodes, ♂; 37, E. elongata sp. nov., holotype, ♂; 38, E. conchata sp. nov., holotype, ♂; 39, E. sinica, ♂; 40, E. cornuta sp. nov., paratype, ♂; 41, E. cornuta sp. nov., paratype, ♀; 42, E. hendrixella, ♂; 43, E. robustispina sp. nov., holotype, ♂.

FIGURES 71 − 72. Male genitalia of Edosa spp. 71, E. cornuta sp. nov., paratype, slide No. YLL 10104; 72, E. hendrixella, slide No. YLL 10102 (scale lines = 0.5 mm).

FIGURES 89 − 91. Female genitalia of Edosa spp. 89, E. elongata sp. nov., paratype, slide No. YLL 10111 (89 a, eighth sternite); 90, E. cornuta sp. nov., paratype, slide No. YLL 10103 (90 a, eighth sternite, lateral view, slide No. YLL 10188); 91. E. hendrixella, slide No. YLL 10114 (scale lines = 0.5 mm).