Scythropiodes taedus Wang et Li

Wang, Qingyun & Li, Houhun, 2016, Review of the genus Scythropiodes Matsumura, 1931 (Lepidoptera, Lecithoceridae, Oditinae) from China, with a checklist of the world, Zootaxa 4132 (3), pp. 301-329 : 323-325

Scythropiodes taedus Wang et Li , sp. nov.

Figs 18 , 33 , 44

Diagnosis. This new species can be separated from congeners by having a torch-shaped phallus. It is similar to S. asymmetricus sp. nov. in appearance, and the differences between them are stated under the latter species.

Type material. CHINA : Yunnan Province: Holotype Ƌ, Weishan County (24°31'N, 98°50'E), 2200 m, 20.VII.2001, coll. Houhun Li and Xinpu Wang, genitalia slide no. WQY13023. Paratypes: 1 Ƌ, same data as for holotype; 1 Ƌ, Weishan County, 2244 m, 23.VII.2013, coll. Shurong Liu; 23 Ƌ, 4 ♀, Taiyang River, 1450 m, 16.V– 11.VI.2014, coll. Zhenguo Zhang; 2 Ƌ, 1 ♀, Dali, 2205 m, 31.VII.2014, coll. Kaijian Teng et al.

Adult ( Fig. 18 ). Wingspan 14.0–17.0 mm. Head yellowish white on frons, yellowish brown on vertex. Antenna with scape pale yellowish brown; flagellum yellowish white at base, deepening to dark brown toward tip. Labial palpus with second palpomere yellowish white, dark brown from basal 1/5 to distal 1/5 on outer surface; third palpomere slightly shorter than second, pointed terminally, yellowish white on outer surface, dark brown on inner surface, with a black ring at base. Thorax and tegula dark brown. Forewing with costal margin straight; apex protruded; termen obliquely truncate, slightly concave below apex; ground color greyish brown, paler or darker in some individuals, distal half scattered with dark brown scales; costal margin orange-yellow, forming a narrow streak; discal spot rounded, black; discocellular spot ill-defined, black; fold with a black spot at middle; broad black streak from below discocellular spot diffused to end of fold on dorsum; ill-defined black dots along distal part of costal margins and termen; cilia pale yellow, tinged with dark brown. Hindwing grey; cilia grey, basal line yellowish white. Fore leg greyish brown; mid leg pale yellow, mixed with yellowish brown; hind leg yellowish white.

MAP 2. Distribution of Scythropiodes spp. in China . ° S. aculeiformus sp. nov.; • S. asymmetricus sp. nov.; ■ S. barbellatus Park et Wu ; * S. gnophus Park et Wu ; ♣ S. taedus sp. nov.

Male genitalia ( Fig. 33 ). Gnathos sickle-shaped in lateral view, acute apically. Valva broad at base, narrowed to 3/4, broadened gradually from 3/4 to apex, rounded dorso-apically, with short setae; apex roundly produced antero-apically, slightly concave medially, with a short ventro-apical spine. Transtilla with lateral lobes strongly digitate, bearing short hairs on distal half, more than 1/3 length of valva. Sacculus broad basally, narrowed gradually toward end, with dense fine hairs. Saccus semicircular. Juxta trapezoidal, weakly sclerotized, slightly concave medially on anterior margin, deeply concave in V shape medially on posterior margin. Phallus torchshaped, about 3/4 length of valva, expanded from base to end, distal half more sclerotized.

Female genitalia ( Fig. 44 ). Papillae anales rectangular, setose. Apophyses posteriores about 2.5 times length of apophysis anteriores. Eighth tergum with anterior margin protruded rhombically, heavily sclerotized. Seventh tergum and sternum with dense microtrichia on both sides, with two circular areas bearing dense microtrichia posteriorly. Antrum funnel-shaped, with dense spinules on inner surface. Ductus bursae membranous, shorter than corpus bursae. Ductus seminalis arising from anterior 1/3 of ductus bursae, dilated distally as an oval sac. Corpus bursae large, pyriform, with dense granules on inner surface.

Distribution. China (Yunnan) .

Etymology. The name of this species is from the Latin taeda (torch), referring to the torch-shaped phallus in the male genitalia.

MAP 3. Distribution of Scythropiodes spp. in China . * S. elasmatus Park et Wu ; ▲ S. issikii (Takahashi) ; * S. malivora (Meyrick) ; © S. oncinius Park et Wu ; ® S. triangulus Park et Wu ; □ S. velipotens (Meyrick) .

Figures

FIGURES 12 – 18. Adults of Scythropiodes spp. 12, S. elasmatus Park et Wu, ♂; 13, S. oncinius Park et Wu, ♂; 14, S. malivora (Meyrick), ♂; 15 a, S. issikii (Takahashi), ♂; 15 b, S. issikii (Takahashi), ♂; 16, S. triangulus Park et Wu, ♂; 17, S. asymmetricus sp. nov., holotype, ♂; 18, S. taedus sp. nov., paratype, ♂. (Scale bars = 2.0 mm).

FIGURES 31 – 33. Male genitalia of Scythropiodes spp. 31, S. triangulus Park et Wu, genitalia slide No. WQY 14209; 32, S. asymmetricus sp. nov.: a – c, enlarged distal portion of left valva (a, holotype, genitalia slide No. WQY 13019; b, paratype, genitalia slide No. WQY 15005; c, paratype, genitalia slide No. WQY 14136); 33, S. taedus sp. nov., holotype, genitalia slide No. WQY 13023. (Scale bars = 0.5 mm).

FIGURES 43 – 44. Female genitalia of Scythropiodes spp. 43, S. asymmetricus sp. nov.: a – c, enlarged signa (a, paratype, genitalia slide No. WQY 14132; b, paratype, genitalia slide No. WQY 14202; c, paratype, genitalia slide No. WQY 14201); 44, S. taedus sp. nov., paratype, genitalia slide No. WQY 15002. (Scale bars = 1.0 mm).