Pityocona sinuosa Li

Chen, Mengting & Li, Houhun, 2017, Review of the genus Pityocona Meyrick, 1918 (Lepidoptera: Gelechiidae) in China, with descriptions of five new species, Zootaxa 4263 (2), pp. 347-357 : 356

Pityocona sinuosa Li , sp. nov.

Figs 2 f, 3f, 4b

Type material. CHINA: Holotype ♂, Limushan Nature Reserve , Qiongzhong County (19.172°N, 109.738°E), Hainan, 640 m, 1.V.2014, coll. Tengteng liu, Wei Guan and Xuemei Hu, slide No. CMT15230 . Paratype: 1♀, Wuzhishan Nature Reserves (18.907°N, 109.680°E), Hainan, 710 m, 21.IV.2014, coll. Tengteng liu, Wei Guan and Xuemei Hu, slide No. CMT15229 .

Diagnosis. This species is similar to P. probleta Bradley, 1961 in the male genitalia by having a broad uncus with a papillary posterolateral process. It can be distinguished by the gnathos slightly expanded from distal 1/3 to rounded apex, and the valva wide for basal 1/4 and slightly narrower to before middle in the male genitalia. In P. probleta , the gnathos is narrowed from distal 1/3 to pointed apex, and the valva is uniform for basal 3/5 ( Bradley, 1961: 129. Pl. 5: Figs 7, 8).

Description. Adult ( Fig. 2 f) with wingspan 10.0–11.0 mm. Head creamy white, with sparse yellowish brown scales above compound eyes. Antenna with scape yellowish brown; flagellum khaki and blackish brown alternately. Labial palpus with second segment pale yellow, densely covered with blackish brown scales on both outer and on ventral surfaces; third segment creamy white, mottled greyish brown scales from basal 1/4 to 2/5, distal 1/5 blackish brown except creamy white at apex. Thorax and tegula pale yellow. Forewing yellowish brown, mixed with brown scales; four evenly spaced sub-ovate blackish spots placed near base of Sc vein, at basal 1/3 of cell on upper margin, at both middle and end of cell respectively, joined by arched longitudinal yellowish white band; narrow straight yellowish brown band centrally placed between spot at end of cell and apex of wing, accompanied by yellowish white band along anterior and posterior edges; obscure blackish spot at apex of wing sometimes; fold with an ill-defined longitudinal stripe formed by dense creamy white scales, black spot placed at basal 1/3 and distal 1/3 of longitudinal stripe respectively, the former smaller; small blackish spots along distal 1/4 of costal margin through apex to termen; fringe greyish brown. Hindwing sharply protruded at apex, termen distinctly indent; smoke grey. Legs dominantly yellowish white; fore- and midlegs with coxae and femora blackish brown at base ventrally, tibiae and tarsi blackish brown on outer surface, tarsi with yellowish white ring at apex of each tarsomere; hindleg with tibia bearing long yellowish brown hairs, tarsus blackish brown at base of each tarsomere on outer surface.

Male genitalia ( Fig. 3 f). Uncus triangularly protruded medially, bifurcate from approximately basal 1/3 by a very narrow cleft; lateral lobes sub-trapezoidal, oblique on posterior margin, with a papillary posterolateral process bearing dense setae. Gnathos stout, weakly hooked, curved at distal 1/3, rounded at apex; culcitula ovate. Tegumen divided from basal 1/3; lateral branch broad, equally wide, blunt anteriorly. Valva far exceeding top of uncus apically; basal 1/4 wide, slightly narrower from 1/4 to before middle, constricted and curved at 3/5, distal 2/5 extending inward, with sparse setae, rounded at apex; ventral margin with a short digitate process at middle, with dense setae. Aedeagus with basal 1/3 expanded, distal 2/3 slightly narrower, rounded apically.

Female genitalia ( Fig. 4 b). Papillae anales slightly narrowed posteriorly, with sparse setae. Apophyses anteriores about 1/3 length of apophyses posteriores. Ostium bursae rounded. Ductus bursae approximately two times length of corpus bursae. Corpus bursae elongate ovate; signum absent.

Distribution. China (Hainan).

Etymology. The specific name is derived from the Latin sinuosus, referring to the slightly curved gnathos.

Figures

FIGURE 2. Adults of Pityocona spp. a, P. bifurcatus, ♂; b, P. longovata sp. nov., holotype, ♂; c, P. transovata sp. nov., paratype, ♂; d, P. monoprocessa sp. nov., holotype, ♂; e, P. mastoidea sp. nov., holotype, ♂; f, P. sinuosa sp. nov., holotype, ♂. (Scales = 2.0 mm)

FIGURE 3. Male genitalia of Pityocona spp. a, P. bifurcatus, slide No. CMT 15231, a 1, enlarged apex of gnathos, slide No. CMT 16020; b, P. longovata sp. nov., holotype, slide no. CMT 16083; c, P. transovata sp. nov., holotype, slide No. CMT 16068; d, P. monoprocessa sp. nov., holotype, slide No. CMT 15282; e, P. mastoidea sp. nov., holotype, slide No. CMT 16070; f, P. sinuosa sp. nov., holotype, slide No. CMT 15230. (Scales = 0.2 mm).

FIGURE 4. Female genitalia of Pityocona spp. a, P. bifurcatus, slide No. CMT 16035; b, P. sinuosa sp. nov., paratype, slide No. CMT 15229. (Scales = 0.5 mm).