Dichomeris splendiptera Li & Park

Zhao, Shengnan, Park, Kyu-Tek, Bae, Yang-Seop & Li, Houhun, 2017, Dichomeris Hübner, 1818 (Lepidoptera, Gelechiidae, Dichomeridinae) from Cambodia, including associated Chinese species, Zootaxa 4273 (2), pp. 216-234 : 217-218

Dichomeris splendiptera Li & Park , sp. nov.

Figs 2 , 15 .

Type material. Holotype ♂, CHINA: Ruili Rare Botanical Garden (24°05'N, 97°50'E), Yunnan Province, 1000 m, 8.viii.2005, leg. Yingdang Ren, genitalia slide No. ZH 06206 ( NKU) . Paratypes: CHINA: Hainan Province: 1♂, Hongkan Forest Protection Station (19°05'N, 109°30'E), Yinggeling , 508 m, 15.vi.2015, leg. Peixin Cong, Wei Guan and Sha Hu, genitalia slide No. ZSN16085 ; 1♂, Hongkan Forest Protection Station, Yinggeling , 508 m, 26.vi.2014, leg. Peixin Cong, Linjie Liu and Sha Hu, genitalia slide No. ZSN16237 ; 2♂, Shuimanxiang (18°53'N, 109°40'E), Mt. Wuzhi , 766 m, 6–7.vii.2015, leg. Qingyun Wang, Suran Li and Mengting Chen ; 1♂, Limushan National Forest Park (19°06'N, 109°26'E), 607 m, 17.v.2015, leg. Peixin Cong, Wei Guan and Sha Hu ( NKU) ; CAMBODIA: 1♂, Mondul Kili (12°57'N, 107°10'E), 7.x.2010, leg. Y. S. Bae et al., genitalia slide No. CIS-6712 ( INU) .

Diagnosis. This new species is similar to D. mitteri Park, 1994 in the male genitalia. It can be separated from D. mitteri by the labial palpus with rough scales on the dorsal surface only and the forewing lacking a costal patch; in the male genitalia by the broader uncus with the length slightly longer than the maximum width and its posterior margin bluntly rounded, and the sicae without carinae. In D. mitteri , the labial palpus bears rough scales on the dorsal and ventral surfaces and the forewing has a costal patch; the length of the slender uncus is approximately 1.4 times the maximum width and its posterior margin is straight, and the sicae have carinae on the ventral surface ( Park, 1994: 17, Fig. 8 : a, b, Pl. II-11).

Description. Adult ( Fig. 2 ) wingspan 12.0–15.0 mm. Head greyish brown, vertex blackish brown laterally. Ocellus absent. Labial palpus with second segment about 2.5 times length of diameter of eye, longer than third segment, with dark brown scale tuft on dorsal surface; first and second segments brown on outer surface, with shining reflection, yellowish white on inner surface, dark ochreous on ventral surface; third segment with basal 1/6 dark brown, distal 5/6 pale yellow on dorsal surface, dark brown on ventral surface. Antenna with scape blackish brown on dorsal surface, yellow on ventral surface; flagellum alternately blackish brown and grey on dorsal surface, pale ochreous on ventral surface. Thorax and tegula blackish brown, with shining bluish violet reflection; mesothorax with pale yellow hair pencils arising from anepisternum in male. Forewing narrow basally, slightly wider medially, gradually narrowed distally, blunt at apex; ground color brown; costal margin blackish brown in distal half; costal area from basal 1/4 to before apex ochreous, somewhat forming a broad band occupying 2/5 of forewing at maximum width, ochreous brown along fold, yellowish brown from below fold to dorsum, with shining reflection; cell with a small blackish brown spot at 3/5, with silvery grey scales diffused from 3/5 to tornus; distal 1/8 silvery grey, with shining reflection, surrounded by yellow; termen blackish brown; fringe pale yellow in basal half, yellowish brown in distal half, greyish brown around tornus. Hindwing grey, apex yellow, edged with blackish brown; fringe grey except pale yellow in basal 2/3 and dark brown in distal 1/3 around apex. Foreleg blackish brown on outer surface, yellowish white on inner surface; midleg ochreous yellow on outer surface, yellowish white on inner surface; fore- and midlegs with pale yellow oblique fasciae on outer surface of tarsi; hindleg with femur yellowish white, tibia and tarsus pale ochreous, tarsus blackish brown on outer surface, each tarsomere yellow at apex.

Male genitalia ( Fig. 15 ). Uncus broad, length slightly longer than maximum width, setose ventrally, anterior margin concave semiovally on ventral surface, posterior margin bluntly rounded. Gnathos relatively long, slightly thickened medially, strongly curved at basal 1/3; culcitula sub-triangular, spinous. Valva equal to or slightly shorter than tegumen-uncus complex, narrow in basal 2/5, widening from 2/5 to 3/4, then slightly narrowed to rounded apex, dorsal margin arched distally; valvella slender, clavate, slightly narrow at base, sparsely setose in distal half, approximately 1/4 length of valva. Setose patch small, columnar. Vinculum height less than length of tegumenuncus complex, vinculum arm with basal 1/3 inflated slightly, sparsely setose. Saccal region narrow, nearly straight on anterior margin. Sicae fused for short distance at base, then separated; each lobe almost uniform except distal 1/5 narrowed to pointed apex, sparsely setose medially along outer margin, apically extending to middle of gnathos. Aedeagus gradually narrowed from zone to apex, with two sclerotized triangular lobes arising from dorsal surface, about 1/8 length of aedeagus.

Female unknown.

Distribution. Cambodia (Mondul Kili), China (Hainan, Yunnan).

Etymology. The species name is derived from Latin splendidens and - pterus, referring the forewings with metal luster.

Figures

FIGURES 1 – 7. Adults of Dichomeris spp. 1, D. arcuata sp. nov., holotype, male; 2, D. splendiptera, sp. nov., paratype, male; 3, D. orientis Park & Hodges, male; 4, D. samkosensis sp. nov., holotype, male; 5, D. foliforma, sp. nov., paratype, male; 6, D. fuscusitis Li & Zheng, female; 7, D. obsepta (Meyrick), male; 7 a, Male foreleg of D. obsepta (Meyrick). Scales: 1 – 7 = 5.0 mm; 7 a = 2.5 mm.

FIGURES 14 – 19. Male genitalia of Dichomeris spp. 14, D. arcuata sp. nov., holotype, genitalia slide No. 6711; 15, D. splendiptera sp. nov., paratype, genitalia slide No. 6712; 16, D. orientis Park & Hodges, genitalia slide No. 6695; 17, D. samkosensis sp. nov., holotype, genitalia slide No. 6710; 18, D. foliforma, sp. nov., paratype, genitalia slide No. ZSN 16117; 19, D. fuscusitis Li & Zheng, genitalia slide No. ZSN 15235. Scales = 0.5 mm.

FIGURES 8 – 13. Adults of Dichomeris spp. 8, D. magnimacularis sp. nov., paratype, male; 9, D. hainanensis sp. nov., paratype, male; 10, D. microsphena Meyrick, male; 11, D. cambodiensis sp. nov., holotype, male; 12, D. matsumurai Ponomarenko & Ueda, female; 13, Dichomeris acutivalvata sp. nov., holotype, male. Scales = 5.0 mm.