Lecithocera tumicuculla sp. nov.

urn:lsid:zoobank.org:act: FD2F64BB-212B-45EE-A565-2149B0028DA3

Figs 5C, 9C, 14C, 17J, 21B

Diagnosis

The new species is similar to L. castanoma Wu, 1997 and L. furvibasis sp. nov. in the male genitalia. It differs from L. castanoma by having the seventh abdominal sternite with a pair of taenioid posterolateral lobes, and in the male genitalia by the basal plate of the gnathos being bilobed on the posterior margin. In L. castanoma, the posterolateral lobes of the seventh abdominal sternite are subovate (Park & Wu 2010: 66, fig. 16), and the basal plate of the gnathos is produced on the posterior margin (Wu 1997: pl. 10 fig. 4). The differences between this new species and L. furvibasis sp. nov. are stated in the diagnosis of the latter.

Etymology

The specific epithet is derived from the Latin “ tum -” and “ cucullus ”, referring to the widened cucullus in the male genitalia.

Type material

Holotype

CHINA – Hunan Province • ♂; Xinhua County, Xiaolang Village; 27º36′ N, 111º15′ E; 3 Aug. 2004; Y.L. Xiao leg.; slide no. LSR13294; NKU.

Paratypes (44 ♂♂, 102 ♀♀)

CHINA – Hunan Province • 3 ♂♂; same collection data as for holotype; slide nos LSR13110, LSR13029, LSR13287; NKU. – Hubei Province • 1 ♂; Lichuan, Maoba; 700 m a.s.l.; 30 Jul. 1999; H.H. Li leg.; slide no. LSR13103; NKU. – Guangxi Zhuang Autonomous Region • 7 ♂♂, 26 ♀♀; Yongfu, Qinmu Village; 160 m a.s.l.; 1–6 May 2008; L. Zhang and H. Zhen leg.; slide nos ZMR10039 ♂, ZMR10079 ♀, ZMR10080 ♀, ZMR10081 ♀, ZMR10197 ♀; NKU • 4 ♂♂, 1 ♀; Yizhou, Xiangbaxiang; 169 m a.s.l.; 18 Aug. 2011; S.L. Hao and Y.H. Sun leg.; slide nos LSR12185 ♂, LSR12225 ♂, LSR13129 ♂; NKU • 2 ♂♂; 2, 13 Apr. 2013; Pingxiang, Shaoping Forest Farm; 280 m a.s.l.; X.F. Yang leg.; slide no. YS18015; NKU • 2 ♂♂, 1 ♀; Jinxiu County, Hekou; 650 m a.s.l.; 28 Apr. 2008; H Zhen and L Zhang leg.; NKU • 1 ♂; Jinxiu County; 600 m a.s.l.; 24 Apr. 2008; H Zhen and L Zhang leg.; slide no. ZMR10039; NKU. – Guizhou Province • 7 ♂♂, 61 ♀♀; Mayanghe; 430 m a.s.l.; 5, 10, 12 Jun. 2007; X.C. Du leg.; slide nos YS18083 ♂, YS18084 ♀, YS18085 ♂, ZYM06488 ♀, ZYM06489 ♀; NKU. – Yunnan Province • 1 ♂; Mengyang, Guanping; 1200 m a.s.l.; 17 Aug. 2005; Y.D. Ren leg.; slide no. LSR13291; NKU • 7 ♂♂, 2 ♀♀; Jingdong County, Zijiaosuo; 1244 m a.s.l.; 4 Jul. 2013; S.R. Liu et al. leg.; slide no. LSR13224 ♂, LSR13442 ♂; NKU • 2 ♂♂, 7 ♀♀; Jinghong City, Mt Jinuo; 1003 m a.s.l.; 26–29 Jul. 2019; K.J. Teng et al. leg.; slide no. YS19695 ♂; NKU. – Xizang Autonomous Region [Tibet] • 1 ♂; Mêdog, Beibengxiang; 780 m a.s.l.; 12 Aug. 2003; X.P. Wang and H.J. Xue leg.; slide no. LSR11228; NKU • 6 ♂♂, 4 ♀♀; Mêdog, Beibengxiang; 987 m a.s.l.; 12 Aug. 2017; M.J. Qi and X.F. Yang leg.; slide nos YS19249 ♂, YS19250 ♀; NKU.

Description

ADULT (Figs 5C, 9C). Wingspan 9.0–11.0 mm. Head brown, orange-yellow on lateral sides. Antenna pale orange. Labial palpus pale orange on inner surface, brownish orange mixed with dark brown on outer surface; third palpomere slightly shorter than second palpomere. Thorax and tegula greyish brown. Forewing relatively broad, with costal margin slightly arched, apex bluntly rounded, termen oblique; ground colour brownish yellow, covered with dense greyish brown scales; markings blackish brown: basal streak ill-defined; discal stigma rounded; discocellular stigma small; tornal streak perpendicularly diffused to discocellular stigma anteriorly; fringe greyish orange, tinged with dark brown, basal line orange white; R 3 stalked with R 4+5, R 5 to costal margin before apex, M 2 and M 3 separated, CuA 1 and CuA 2 short-stalked. Hindwing and fringe pale greyish orange; fringe with basal line orange white; M 3 and CuA 1 stalked for about half the length of CuA 1.

MALE GENITALIA (Fig. 14C). Uncus V-shaped; caudal lobe long, digitiform, rounded and setose apically. Gnathos with basal plate bilobed on posterior margin; median process wide at base, narrowed to basal ⅔, then abruptly slender, curved ventrad preapically. Valva broad basally; cucullus about half length of valva, widened at distal ⅓, then narrowed to rounded apex, gently arched on costal margin, setose on ventral half, with row of bullet-shaped setae along basal half of ventral margin; costal bar narrow in basal half, widened from middle toward valva, gently angled at middle; sacculus narrow in basal half, widened in distal half, reaching cucullus. Vinculum broad; saccus triangular with blunt apex. Juxta shield-shaped, with small notch at middle on posterior margin, with small projection at middle on anterior margin; posterior lobe semiovate basally, taenioid distally, extending outward. Aedeagus nearly as long as valva, almost uniformly wide, gently curved, with one dorsal denticle, with dense granules in vesica; cornuti consisting of sclerite about ⅓ length of aedeagus, placed beyond middle, and some spines medially.

SEVENTH ABDOMINAL STERNITE (Fig. 17J). Anterolateral rib thin, forked basally, not reaching posterior margin of sixth abdominal sternite; posterolateral lobe broad taenioid.

FEMALE GENITALIA (Fig. 21B). Eighth abdominal sternite slightly concave at middle on posterior margin. Apophyses posteriores are about twice as long as apophyses anteriores. Antrum cup-shaped, weakly sclerotized, spiculose. Ductus bursae longer than corpus bursae, broad, wrinkled and weakly sclerotized in posterior half; ductus seminalis arising from about middle of ductus bursae, basal part wider than ductus bursae. Corpus bursae ovate; signum elliptical, with dense denticles, placed in middle.

Distribution

China (Guangxi, Guizhou, Hubei, Hunan, Xizang [Tibet], Yunnan).