Strophedra nigrifusca, Li, 2017

Li, Houhun, 2017, Review of the species of Strophedra Herrich-Schäffer, 1853 from China (Lepidoptera: Tortricidae: Olethreutinae: Grapholitini), Zootaxa 4318 (2), pp. 339-350 : 343

Strophedra nigrifusca , sp. nov.

( Figs. 4 , 12 )

Type material. CHINA: Holotype ♂, Yinggeling (19°4′N, 109°24′E), Hainan Province, 270 m, 8.XI.2016, coll. Xia Bai, Shuonan Qian and Wanding Qi, genitalia slide no. LSH16380 . Paratype: 1♂, Jianfengling (18.44°N, 108.52°E), Ledong County, Hainan Province, 770 m, 28.V.2015, coll. Peixin Cong, Wei Guan and Sha Hu, genitalia slide no. LSH16206 .

Diagnosis. Strophedra nigrifusca shares with S. homotorna (Meyrick, 1912) and S. pericapna ( Diakonoff, 1976) an elongate-ovate cucullus, a little longer than half the length of the valva. It can be distinguished from those species by a spine from the ventral 2/3 of the phallus, which is absent in S. homotorna and S. pericapna . Strophedra nigrifusca is also similar to S. paraspinifera , and the differences between them are given under the latter species.

Description. Adult ( Fig. 4 ) wingspan 11.5 mm. Head: Vertex and antenna blackish brown. Labial palpus slender and short, grayish yellow, terminating before 1/2 height of compound eye. Thorax: Dorsum and tegula blackish brown. Foreleg with coxa and femur yellow, tibia grayish white on outer surface, grayish yellow on inner surface; tarsus dark brown to blackish brown basally and deep yellow apically on outer surface, deep yellow on inner surface; mid- and hindlegs with coxae and femora deep yellow, mid-tibia blackish brown on outer surface, grayish white on inner surface, hind tibia brown on outer surface, grayish white on inner surface, mid- and hind tarsi brown to blackish brown except yellow at apex of each tarsomere. Forewing widening towards bluntly rounded apex, length about two times maximum width; costa arched before middle; termen oblique, without notch below apex; blackish brown, with scales yellow tipped; costa with nine pairs of yellow strigulae, basal two pairs ill defined, distal two pairs absent; blackish brown band from costa between second and third pair of strigulae oblique to middle of discal cell on anterior margin, then extending ventrad to basal 2/5 of dorsum, located before median fascia; median fascia leaden with blue-violent gloss originating below third pair of strigulae, widening to 2/3 length of discal cell, then extending ventrad to middle of dorsum; blackish brown band from costa between fourth and fifth pair of strigulae oblique to end of discal cell, extending to before tornus, located beyond median fascia; leaden streak with blue-violent gloss from below fifth pair of strigulae extending to beyond upper corner of discal cell, then oblique inside to beyond lower corner of discal cell touching inner edge of ocelloid patch, with scattered black scales beyond leaden streak; ocelloid patch without black dashes or dots, inner edge leaden with blue-violent gloss, rather wide and above tornus, outer edge absent; fringe dark gray, basal line blackish gray. Hindwing brown, grayish yellow basally and light yellow distally on costal area overlapped by forewing; fringe light brownish gray, basal line dark brown. Abdomen: Male genitalia ( Fig. 12 ) with tegumen high and narrow, about 3/5 length of valva, narrowly rounded at top. Gnathos subtrapezoidal. Valva subovate before neck; costa concave before middle by approximately 155°, with a small basal process; basal cavity well defined, nearly ovate; neck distinct, about 1/2 width of valva at base; sacculus with a bunch of fine setae at base, with long hairs extending from near base to before neck; cucullus elongate ovate, longer than half length of valva, bluntly angled at ventro-basal corner, densely covered with fine setae from ventro-basal corner to apex, with bristles along ventral margin, with a row of dense short spines extending from above ventro-basal corner obliquely inward to about 3/5 width of cucullus. Phallus broad at base, narrowed towards apex, with a strong spine arising from about ventral 2/3 reaching before apex; cornutus absent ( Fig. 12 a). Female unknown.

Distribution. China (Hainan).

Etymology. The specific name is derived from the Latin nigri- (black) and fuscus (brown), referring to the blackish brown forewing.

Figures

FIGURES 3 – 10. Adults of Strophedra spp. 3, S. paraspinifera, sp. nov., holotype, ♂; 4, S. nigrifusca, sp. nov., holotype, ♂; 5, S. laticolla, sp. nov., holotype, ♂; 6, S. tricornuta, sp. nov., holotype, ♂; 7, S. quercivora, ♂; 8, S. magna, ♂; 9, S. nitidana, ♀; 10. Head of S. nitidana, ♀. (Scale bars: Figs. 3 – 9 = 2.0 mm, Fig. 10 = 0.5 mm).

FIGURES 11 – 15. Male genitalia of Strophedra spp. (11 a – 15 a. Enlarged phalli). 11, S. paraspinifera, sp. nov., holotype, slide no. LSH 15354; 12, S. nigrifusca, sp. nov., holotype, slide no. LSH 16380; 13, S. laticolla, sp. nov., holotype, slide no. LSH 15535; 14, S. tricornuta, sp. nov., holotype, slide no. LSH 15582; 15, S. quercivora, slide no. LSH 15908. (Scale bars: Figs. 11 – 15 = 0.2 mm, Figs. 11 a – 15 a = 0.1 mm).