Dichomeris cambodiensis Park & Li

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 : 226-227

Dichomeris cambodiensis Park & Li , sp. nov.

Figs 11 , 24 .

Type material. Holotype ♂, CAMBODIA: Bokor (10°39'N, 104°03'E), 14.viii.2013, leg. Y. S. Bae et al., genitalia slide No. CIS-6698 ( INU).

Diagnosis. The new species resembles D. lushanae Park & Hodges, 1995 superficially. It can be differentiated from D. lushanae by having no spot in the forewing; by the lateral lobes arising from basal 1/3 of the vinculum arm and lacking carinae, the symmetrical sicae, and the slender and elongate aedeagus without a sclerotized lobe from the zone in the male genitalia. In D. lushanae , the forewing has conspicuous spots; the lateral lobes arise from the base of the vinculum arm and have carinae on the dorsal surface, the sical lobes are asymmetrical, and the relatively short aedeagus has two sclerotized lobes from the zone ( Park & Hodges, 1995: 22, Figs 15, 16 , Pl. B: 8).

Description. Adult ( Fig. 11 ) wingspan 18.0 mm. Head brown, vertex pale yellow laterally. Ocelli present. Antenna with scape dark brown on dorsal surface, yellowish white on ventral surface; flagellum alternately dark brown and yellowish brown on dorsal surface, yellowish brown and ciliate on ventral surface. Labial palpus with first and second segments dark brown on outer surface, yellow on inner surface; second segment with greyish white-tipped triangular scale tuft on dorsal surface; third segment smoothly scaled, about equal to length of second segment, pale yellow, except brown on ventral surface. Thorax brown; tegula pale yellow in basal half, brown in distal half; mesothoracic anepisternum without hair pencils in male. Forewing slightly broadened from base to termen, apex blunt, termen obliquely straight; uniformly brown except pale yellow along costal margin; fringe yellowish brown. Hindwing and fringe brown. Fore- and midlegs dark brown on outer surface, yellowish white on inner surface, tarsi with each tarsomere pale yellow apically on outer surface; hindleg pale yellow, tibia clothed with long pale yellow scales.

Male genitalia ( Fig. 24 ). Uncus semicircular, anterior margin shallowly concave on ventral surface. Gnathos stout, hook-shaped, curved at basal 1/3, sharp at apex; culcitula reduced. Valva longer than tegumen-uncus complex, narrow for basal 2/3, distal 1/3 slightly narrowed to bluntly rounded apex; valvella small, less than 1/6 length of valva, narrowed from base to sharp apex, setose. Setose patch absent. Vinculum height slightly less than length of tegumen-uncus complex; lateral lobe arising from basal 1/3 of vinculum arm, narrowed from base to sharp apex, edged with denticles, about 1/4 length of valva. Saccal region broad, anterior margin slightly convex at middle. Sicae slightly exceeding base of vinculum arm, basal 1/3 fused, subquadrate, distal 2/3 trilobed: lateral lobes slender, clavate, symmetrical, rounded at apex; median lobe clubbed, about 2/3 length of lateral lobes, narrowed at basal 2/7. Aedeagus slender, length approximately 9 times maximum width, narrow at base, broadest at 2/5, vesica inflated; without sclerotized lobe from zone.

Female unknown.

Distribution. Cambodia (Bokor).

Etymology. The species name is from the country's name, Cambodia.

Figures

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.

FIGURES 20 – 25. Male genitalia of Dichomeris spp. 20, D. obsepta (Meyrick), genitalia slide No. ZSN 15276; 21, D. magnimacularis sp. nov., holotype, genitalia slide No. L 00129; 22, D. hainanensis sp. nov., paratype, genitalia slide No. NKLEP 001; 23, D. microsphena Meyrick, genitalia slide No. 6724; 24, D. cambodiensis sp. nov., holotype, genitalia slide No. 6698; 25, D. matsumurai Ponomarenko & Ueda, male, genitalia slide No. 6685. Scales = 0.5 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.