Autosticha semicircularia S. Wang, 2021

Tao, Zhulin, Wang, Yuqi & Wang, Shuxia, 2021, Taxonomy of the genus Autosticha Meyrick (Lepidoptera: Autostichidae) in China Descriptions of fifteen new species, Zootaxa 5048 (3), pp. 347-370 : 361-364

Autosticha semicircularia S. Wang , sp. nov.

( Figs 11 , 25 , 36 )

urn:lsid:zoobank.org:act:F9653A4D-5E32-4649-8C8F-BE94710CEA50

Type material. CHINA, Hainan: Holotype ♂, Mt. Wuzhi (18.91ºN, 109.68ºE), Wuzhishan City, 710 m, 21.IV.2014, leg. TT Liu et al., slide No. WYQ15123 . Paratypes: 1♀, same data as holotype, slide No. WYQ15124 ; 1♀, Yinggeling, 450 m, 3.I.2014, leg. ZB Wang, slide No. WYQ16700 ; 3♂ 2♀, Hongxin Village, Yuanmenxiang , Baisha County, 430 m, 15−17.IV.2014, leg. TT Liu et al., slide Nos. WYQ15113 ♂, WYQ16499 ♂, WYQ16493 ♂; 1♂ 1♀, Mt. Wuzhi , 742 m, 19‒20.V.2015, leg. PX Cong et al., slide Nos. WYQ16367 ♂, WYQ15026 ♀; 1♂, Lizudadian, Shuimanxiang, Wuzhishan City , 766 m, 5.VII.2015, leg. QY Wang et al., slide No. WYQ15131 ; 2♂, Hongkan, Yinggeling , 540 m, 25‒27.VII.2015, leg. QY Wang et al., slide Nos. WYQ16687, WYQ16672 ; 1♀, Lizudadian, Shuimanxiang, Wuzhishan City , 766 m, 27.II.2016, leg. QY Wang et al .; 1♂ 1♀, Mt. Wuzhi , 738 m, 22−28.VII.2016, slide No. WYQ16408 ♀; 5♀, Limushan Forest Park, 607 m, 18.VII‒26.X.2016, leg. X Bai et al .; 2♂ 4♀, Mt. Wuzhi , 738 m, 27.II‒2.XI.2016, leg. X Bai et al., slide Nos. WYQ16503 ♂, WYQ16505 ♀, WYQ16504 ♀.

Diagnosis. The new species can be distinguished from its congeners by the costa with a deep concavity at distal 1/3. It is similar to A. turriformis sp. nov., and the differences between them are stated under A. turriformis .

Description. Adult ( Fig. 11 ). Forewing length 5.6−6.2 mm.

Head yellowish brown. Antenna yellow on ventral surface; scape dark brown, flagellum annulated with dark brown on dorsal surface. Labial palpus with second palpomere yellow on inner surface, dark brown on outer surface; third palpomere dark brown on ventral surface, yellow on dorsal surface.

Thorax and tegula yellowish brown. Forewing ground color yellow, mixed with brown scales; black spot at base of costal margin, near base of subcostal vein and dorsum respectively; discal, discocellular, plical and tornal spots black, discocellular spot largest; terminal dots black, ranging from distal 2/5 of costal margin along termen to tornus; fringe pale yellowish brown. Hindwing and fringe pale greyish brown. Fore- and midlegs pale yellow on ventral surface, dark brown on dorsal surface, tarsus yellow at apex of each tarsomere; hindleg pale yellow, tarsus brown distally.

Male genitalia ( Fig. 25 ). Uncus wide at base, narrowed to apex. Gnathos narrowly banded, circular. Tegumen with posterior 2/5 sub-rectangular; lateral arm uniformly narrow. Valva with basal 3/5 uniform in width, distal 2/5 narrow, curved upward, apex sinuate, with a tiny dorsoapical and a ventroapical denticle; costa straight in basal 3/5, with deep semi-circular concavity at distal 1/3. Sacculus about 3/5 length of valva, dorsal margin reaching below costa, ventral margin narrowly banded, widened to before apex distally, with a curved ridge from before dorsal margin of sacculus extending to ventroapex of valva. Saccus about 1/3 length of uncus, wide at base, narrowed to apex. Juxta with ventral surface sub-quadrate, dorsal surface turriform, narrowed gradually, with coiled ridges, reaching gnathos apically. Aedeagus about 1/2 length of valva, wide at base, tapered to apex; cornuti consisting of a bunch of spines placed distally ( Fig. 25a ).

Female genitalia ( Fig. 36 ). Apophyses posteriores about twice length of apophyses anteriores. Eighth tergum almost straight on posterior margin; eighth sternum with posterior margin convex medially, incised in middle, forming two setose lobes. Lamella antevaginalis rectangular, with width approximately four times of length. Antrum funnel shaped, concave at middle on posterior margin. Ductus bursae membranous; ductus seminalis arising from middle of ductus bursae. Corpus bursae ovoid, more than 1.5 times length of ductus bursae; with two signa: one below entrance of corpus bursae, smaller, sub-ovoid, sclerotized and folded anteriorly; the other at middle of corpus bursae, very large, posterior margin straight, anterior margin rounded, lateral margins vertical and widened from posterolateral corners to anterior marin.

Distrubition. China (Hainan).

Etymology. The specific epithet of the new species is derived from the Latin semi- and circularius, referring to the semicircular concavity of the costal margin of the male valva.

Figures

FIGURES 9–16. Adults of Autosticha spp. 9, A. angustivalva sp. nov.; 10, A. basiprocessa sp. nov.; 11, A. semicircularia sp. nov.; 12, A. trapeziformis sp. nov.; 13, A. turriformis sp. nov.; 14, A. ventericoncava sp. nov.; 15, A. furcillata sp. nov.; 16, A. ornithorhyncha sp. nov. All holotypes and males. Scales = 2.0 mm.

FIGURES 23–28. Male genitalia of Autosticha spp. 23, A. angustivalva sp. nov., slide No. TZL19336; 24, A. basiprocessa sp. nov., slide No. WYQ14092, 24a, slide No. TZL20701; 25, A. semicircularia sp. nov., slide No. WYQ15123; 26, A. trapeziformis sp. nov., slide No. WYQ15058, 26a, slide No. TZL19955; 27, A. turriformis sp. nov., slide No. TZL20666; 28, A. ventericoncava sp. nov., slide No. TZL19382; 23a–28a, enlarged cornuti. All holotypes except 24a, 26a, 28, 28a. Scales: 23–28 = 0.2 mm; 23a–25a, 27a–28a = 0.05 mm; 26a = 0.1 mm.

FIGURES 34–39. Female genitalia of Autosticha spp. 34, A. angustivalva sp. nov., slide No. JYY17031; 35, A. basiprocessa sp. nov., slide No. JYY16213; 36, A. semicircularia sp. nov., slide No. WYQ16408; 37, A. trapeziformis sp. nov., slide No. TZL20678; 38, A. turriformis sp. nov., slide No. TZL20557; 39, A. ventericoncava sp. nov., slide No. WYQ16289; 35a, 37a, 38a, enlarged signa. All paratypes. Scales: 34–39 = 0.2 mm; 35a, 37a = 0.05 mm; 38a = 0.1 mm.