Nemophora vietnamensis Kozlov, 2024

Kozlov, Mikhail V., 2024, Fairy moths of the genus Nemophora Hoffmannsegg, 1798 (Lepidoptera: Adelidae) from Myanmar, Thailand, Laos, Cambodia and Vietnam, Zootaxa 5423 (1), pp. 1-66 : 21

Nemophora vietnamensis Kozlov , sp. nov.

urn:lsid:zoobank.org:act:D158838A-D5CF-4C51-AFC3-CCB00DD80E44

( Figs. 16 , 69 , 95 )

Holotype ♂: Vietnam, Qu ảng Chu (21° 51' N, 105° 49' E); labelled: 8 mm circle with red border, print ‘ Holo- │ type’; 10 × 14 mm, print + black ink ‘N. Vietnam │ prov. Bacthai │ Quangchu │ 23.4.1986 │ V. Kuznetzov leg.’; 7 × 18 mm, print ‘ HOLOTYPE ♂ │ Nemophora │ vietnamensis Kozlov’ ( ZIN) [examined] .

Diagnosis. Nemophora vietnamensis externally resembles N. ahenea ( Figs. 14, 15 ), from which it differs by the glossy golden frons, not enlarged compound eyes in males (interocular index 0.45), very long male antenna (4.3 × FWL), forewing fascia consisting of single dark band, tips of valvae extending beyond tip of tegumen, and long medial process of transtilla. Nemophora vietnamensis also resembles N. pyrotechna ( Figs. 19, 20 ), from which it markedly differs by the absence of yellow longitudinal stripes at the forewing base.

Description. Male ( Fig. 16 ). FWL 6.5 mm, WLR 0.42. Vertex ochreous; frons glossy golden, with row of ochreous scales below antennal sockets. PLB 1.0 × vertical eye diameter (0.5 × length of scape), pale yellow. Proboscis yellowish brown, base with golden scales. Eyes not enlarged; interocular index 0.45. Antenna 4.3 × FWL, with simple inwardly directed pegs. Scape and base of flagellum dark bronze; at about 0.5 × FWL colour of flagellum sharply changes to silver-white. Tegulae and thorax glossy golden. Forewing ( Fig. 69 ) dark bronze with coppery tint; pattern dark brown, consists of large, oblique, nearly rectangular costal spot at base and moderately wide (0.10–0.12 × FWL) medial fascia, internal margin of which reaches costa at 0.55 × FWL. Fringe bronze. Hindwing dark brown; costal area grey; fringe brown. Legs bronze dorsolaterally, pale yellow ventrally. Epiphysis at 0.55, reaching apex of tibia. Colour of abdomen unknown.

Female unknown.

Male genitalia ( Fig. 95 ). Tegumen dome-shaped, with weak medial ridge. Socii elongate, 1.3 × diameter of phallus. Vinculum 2.3 × length of valva, narrowly U-shaped, with nearly straight lateral margins; distal margin W-shaped. Tips of valvae extend beyond tip of tegumen. Ventral margin of valva medially with long narrow lobe reaching 0.75 × length of valva; dorsal margin almost straight; tip of valva narrowly rounded. Bases of valvae fused to medial part of vinculum; valvar margins distinct. Anellus 0.4 × length of valva. Transtilla with long pointed medial process. Juxta 0.35 × length of phallus; arrow head extremely wide (WLR 1.0), with widely rounded tip and short pointed lateral arms. Phallus nearly equal to length of vinculum, almost straight; distal third of phallus bifurcate (see from ventral side); base of phallus widely funnel-shaped.

Biology. The holotype was collected in day time along a trail in a secondary tropical forest ( Kuznetzov 1988).

Distribution. Vietnam (this study).

Etymology. Named after the type locality ( Vietnam).

Figures

FIGURES 9–16. Adults of Nemophora spp. 9, N. aurora Kozlov, 1997, female, from Sa Pa, Vietnam; 10, N. aglaospila (Meyrick, 1928), male, from S. E. Borneo, Indonesia; 11, ditto, female, from Nam-Lik Eco-Village, Vientiane Province, Laos; 12, N. sinicella (Walker, 1863), male, from Maymyo, Shan Hills, Myanmar; 13, ditto, female, from Huai Nam Dang, Thailand; 14, N. ahenea Stringer, 1930, male, holotype, from Iwawakisan, Kii Province, Honshu, Japan; 15, ditto, female, from Mt. Mikusa, Hyogo Prefecture, Honshu, Japan; 16, N. vietnamensis Kozlov, sp. nov., male, holotype, from Quảng Chu, Vietnam. Scale: 2 mm.

FIGURES 63–88. Forewing pattern of Nemophora spp. 63, N. nieukerkeni Kozlov, sp. nov.; 64, N. karsholti Kozlov, sp. nov.; 65, N. szabokyi Kozlov, sp. nov.; 66, N. aglaospila (Meyrick, 1928); 67, N. sinicella (Walker, 1863); 68, N. ahenea Stringer, 1930; 69, N. vietnamensis Kozlov, sp. nov.; 70, N. cleodoxa (Meyrick, 1922); 71, N. pyrotechna (Meyrick, 1912); 72, N. punctifasciella Kozlov, sp. nov.; 73, N. satrapodes (Meyrick, 1894); 74, N. thailandensis Kozlov, sp. nov.; 75, N. melichlorias (Meyrick, 1907); 76, N. nigripunctella Kozlov, sp. nov.; 77, N. chalcoptera Kozlov, sp. nov.; 78, N. caeruliantenna Liao, Hirowatari & Huang in Liao et al., 2023; 79, N. sakaii (Matsumura, 1931); 80, N. auricapitella Kozlov, sp. nov.; 81, N. umbripennis Stringer, 1930; 82, N. aurifera (Butler, 1881); 83, N. nielseni Kozlov, sp. nov.; 84, N. meyi Kozlov, sp. nov.; 85, N. yeni Kozlov, sp. nov.; 86, N. rubicunda Kozlov, sp. nov.; 87, N. pecuniosa (Meyrick, 1921); 88, N. kuznetzovi Kozlov, sp. nov. Scale 2 mm.

FIGURES 94–99. Male genitalia of Nemophora spp. 94, N. ahenea Stringer, 1930; 95, N. vietnamensis Kozlov, sp. nov.; 96, N. cleodoxa (Meyrick, 1922); 97, N. pyrotechna (Meyrick, 1912); 98, N. punctifasciella Kozlov, sp. nov.; 99, N. melichlorias (Meyrick, 1907); a: genital complex, ventral view (right valva not shown); b: genital complex, lateral view; c: juxta; d: phallus, ventral view; e: phallus, lateral view. Scale: 0.2 mm.

FIGURES 17–24. Adults of Nemophora spp. 17, N. cleodoxa (Meyrick, 1922), male, lectotype, from Minbu, Myanmar; 18, ditto, female, paralectotype, from the same locality; 19, N. pyrotechna (Meyrick, 1912), male, from Kadan Kyun, Myanmar; 20, ditto, female, from the same locality; 21, N. chionites (Meyrick, 1907), male, from Cherrapunji, Meghalaya, India; 22, N. griseella (Walsingham, 1880), male, from Shillong, Meghalaya, India; 23, N. ischnodesma (Meyrick, 1928), male, from Pidaung, Myanmar; 24, N. punctifasciella Kozlov, sp. nov., male, holotype, from Sumbawa Island, Indonesia. Scale: 2 mm.