Edosa semicircularis 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 : 39-40

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

( Figs 4 , 16 c & f, 17e, 18f, 46, 75)

Type material. Holotype ♂, CHINA: Sangang (27°45΄N, 117°41΄E), Mt. Wuyi, Fujian Province, 24.viii.2004, leg. Haili Yu, genitalia slide No. XYL04193.

Paratypes: CHINA: Fujian Province: 1 ♂, same data as for holotype except dated 19.viii.2004, genitalia slide Nos. XYL04221m. Chongqing Municipality: 2 ♂, Mt. Jinyin, Youyang County (28°50΄N, 108°46΄E), 660 m, 26.vii.2012, leg. Yinghui Sun & Aihui Yin, genitalia slide No. YLL12025. Gansu Province: 1 ♂, Fanba (32°44΄N, 105°07΄E), Wenxian, 718 m, 16.vii.2005, leg. Haili Yu, genitalia slide No. YLL10130. Guangdong Province: 1 ♂, Nanling (24°55΄N, 113°00΄E), Shaoguan, 7.v.2009, leg. Min Wang et al., genitalia slide No.YLL11094. Guangxi Zhuang Autonomous Region: 1 ♂, Huaping (24°51΄N, 106°23΄E), 950 m, 7.viii.2006, leg. Weichun Li. Hubei Province: 1 ♂, Wujiashan (31°05΄N, 115°48΄E), Yingshan County, 8.vii.2008, leg. Yunli Xiao, genitalia slide No. XYL08085.

Diagnosis. This new species is similar to E. hendrixella Robinson, 2008 , but can be distinguished from the latter by the almost semicircular valva with broad and truncate apex; in E. hendrixella , the valva is bottle-shaped, with narrowly rounded apex.

Description. Adult ( Fig. 46 ). Wingspan 12.5−17.0 mm. Head orange yellow. Antenna 0.9× length of forewing; scape dusty yellow, mixed with darker scales anteriorly, with a few black pecten bristles; flagellum variegated, dusty yellow on ventral surface, dark purplish brown on dorsal surface except first few segments dusty yellow. Labial palpus dusty yellow, mixed with darker scales on inner surface, blackish brown on outer surface. Thorax and tegula grayish brown. Forewing index 0.26−0.32, dark grayish brown, individual scales dark tipped; retinaculum present; cilia grayish black. Hindwing grayish brown, with a single short, slender evenly curved frenular bristle; cilia grayish brown. Fore and mid legs blackish brown; hind leg yellowish brown, mixed with blackish brown on outer surface.

Pregenital abdomen. In male, first tergum without sclerotization; coremata present in eighth segment; eighth sternite 0.25× as long as wide, without caudal process; eighth tergite trapezoidal, without caudal process.

Male genitalia ( Fig. 75 ). Vinculum concave at middle on anterior margin, slightly concave on posterior margin; medial process on ventrocaudal margin about half length of vinculum. Tegumen narrow bar-shaped. Uncus with lobate base separated by membrane; uncus lobe 0.5× depth of vinculum, orange lamella-shaped, not twisted, slightly bent ventrad, setose dorsally; sclerite present between uncus lobes, X-shaped. Valva almost semicircular, with broad and truncate apex; costal margin straight, unmodified; basal flange large, roundly expanded in basal 1/3, slightly narrowed and setose at middle, horned, strongly sclerotized and melanized in distal 1/3; bridging lobe absent between basal flange and valva; ventral margin with minute serration, slightly convex in basal 2/3, forming inconspicuous ventral lobe; basal margin with small, triangular ‘secondary apodeme’ close to apodeme; inner surface unmodified. Juxta reflexed anteriorly along inner surface of vinculum, 0.5× length of aedeagus, grooved in dorsal midline, usually folded laterally, bifurcate at its fusion with base of medial process of vinculum when spreaded. Aedeagus almost as long as valva, slender, tubular, double-walled, slightly bent ventrad, with shallow dorsal emargination. Bulbus ejaculatorius 3.0× length of aedeagus, basal 1/3 narrow, subdistal section expanded and curved, distal section expanded.

Female unknown.

Distribution. China (Chongqing, Fujian, Gansu, Guangdong, Guangxi, Hubei).

Etymology. The specific name is derived from the Latin semicircularis , meaning semicircular, referring to the semicircular valva.

Remarks. Edosa semicircularis sp. nov. is feasible to be placed in the uncusella -complex for the variegated flagellum, the short aedeagus and the short medial process on the vinculum ventrocaudal margin.

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.

FIGURE 16. Tegumen and vinculum of Edosa spp. a, E. truncatula sp. nov.; b, E. baculiformis sp. nov.; c, E. semicircularis sp. nov.; d, E. sinica; e, E. minuta sp. nov.; f, E. semicircularis sp. nov.; g, 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 44 − 51. Adults of Edosa spp. 44, E. robustispina sp. nov., paratype, ♀; 45, E. uncusella sp. nov., paratype, ♀; 46, E. semicircularis sp. nov., holotype, ♂; 47, E. dentata sp. nov., holotype, ♂; 48, E. digitata sp. nov., holotype, ♂; 49, E. longicornis sp. nov., holotype, ♂; 50, E. minuta sp. nov., paratype, ♂; 51, E. malthacopis, holotype, ♂.

FIGURES 73 − 75. Male genitalia of Edosa spp. 73, E. robustispina sp. nov., paratype, slide No. YLL 10067; 74, E. uncusella sp. nov., paratype, slide No. YLL 10207 (74 a, left valva, slide No. XYL 04234); 75, E. semicircularis sp. nov., paratype, slide No. YLL 11094 (scale lines = 0.5 mm).