Fairy moths of the genus Nemophora Hoffmannsegg, 1798 (Lepidoptera: Adelidae) from Myanmar, Thailand, Laos, Cambodia and Vietnam Author Kozlov, Mikhail V. text Zootaxa 2024 2024-03-11 5423 1 1 66 http://dx.doi.org/10.11646/zootaxa.5423.1.1 journal article 10.11646/zootaxa.5423.1.1 1175-5334 10805789 622D5264-DBE2-463B-9A8C-AD1C77C90254 Nemophora meyi Kozlov , sp. nov. urn:lsid:zoobank.org:act: AEECF79D-AC50-4984-88CA-063161511013 ( Figs. 53, 54 , 84 , 106 ) Holotype ♂ : Vietnam , Lào Cai , Sa Pa ( 22° 20' N , 103° 51' E ); labelled: 8 × 16 mm , yellow paper, print ‘ Vietnam , Sa Pa │ Fan Si Pang Mts. │ 25– 30.3.1995 │ leg. W. Mey’ ; 6 × 15 mm , print ‘ HOLOTYPE ♂ │ Nemophora │ meyi Kozlov’ ( ZMB ) [examined] . Paratype . 1 ♀ , labelled: 10 × 12 mm , black frame, print ‘ 10‒20.V.2006 │ N. Vietnam │ Prov. Lao Cai │ Fan-Si-Pan Mts │ Sa Pa , 1500 m │ V. Zolotuhin leg’; 8 × 15 mm , print ‘ PARATYPE ♀ │ Nemophora │ meyi Kozlov’ ( ZMB ) [examined] . Diagnosis . Nemophora meyi is nearest to N. songgangensis Liao, Hirowatari & Huang in Liao et al. 2023 , from which it differs by the black basal part of forewing, yellow band of fascia clearly separated into two wide triangular spots, glossy lead frons, U-shaped vinculum, long medial process of transtilla and shape of the apical part of phallus. In male genitalia N. meyi resembles N. magnific a Kozlov, 1997, from which it differs by larger size, wide (width nearly equal to height) triangular spots forming incomplete yellow band of forewing fascia, almost indistinct longitudinal stripes in the apical part of forewing, deep medial indentation on the distal margin of vinculum, and long ventral lobe of the apical part of phallus in male genitalia. Description. Male ( Fig. 53 ). FWL 11.5 mm , WLR 0.24. Vertex ochreous; frons glossy lead, with row of piliform scales below antennal sockets; colour of these scales changes from pale yellow medially to dark brown laterally. PLB 1.15 × vertical eye diameter (1.3 × length of scape), dorsally with appressed yellow scales, ventrolaterally with raised black piliform scales. Proboscis brown, base with coppery brown scales. Eyes only slightly enlarged; interocular index 0.7. Antenna 3.5 × FWL, with simple inwardly directed pegs. Scape and base of flagellum bronze; ventral part of scape with few yellow scales; at about 0.7 × FWL colour of flagellum gradually changes to silver-white. Tegulae and thorax coppery black. Basal 0.7 × FWL ( Fig. 84 ) nearly black, apical 0.3 × FWL dark brown with ochreous tint. Proximal line of W-shaped basal mark ends at wing base (not expanding along costal margin); distal line of this mark broken, with small triangular spot at costa separated by dark brown area; costa between wing base and this yellow spot with two glossy lead spots; third glossy lead spot is adjacent to yellow stripe. Medial band of fascia broken, consists of two wide (width nearly equal to height) triangular spots. Glossy lead spot between W-shaped basal mark and fascia straight and not broken; similarly coloured spot outside fascia forms nearly right angle. Apical part of forewing outside this spot with 5–7 diffuse dark brown longitudinal stripes, which are hardly visible over brown background. Fringe dark brown. Hindwing dark brown; costal area yellow; fringe brown to grey. Legs brown dorsally, yellow ventrolaterally. Epiphysis at 0.55, reaching apex of tibia. Abdomen dark brown; distal margins of sternites bright yellow. Female ( Fig. 54 ). FWL 8.5 mm , WLR 0.24. Antenna 1.6 × FWL. Scape glossy golden; basal third of flagellum slightly thickened by appressed dark brown scales; apical part of flagellum from silver-white to grey. Tegulae and thorax dark bronze. Apical third of forewing with small yellow spot, distally subdivided into four longitudinal stripes. Otherwise similar to male. Male genitalia ( Fig. 106 ). Tegumen dome-shaped, with almost indistinct medial ridge. Socii 1.6 × diameter of phallus. Vinculum 2.0 × length of valva, U-shaped; lateral margins slightly prominent; distal margin with small medial indentation. Tip of tegumen slightly extends beyond tips of valvae. Ventral margin of valva gently W-shaped; dorsal margin (viewed laterally) straight; tip of valva narrowly rounded. External surface of valva tuberculate. Valvae not fused basally. Anellus 0.3 × length of valva. Transtilla with long medial process. Juxta 0.55 × length of phallus; arrow head moderately wide (WLR 0.5), with pointed tip and short pointed lateral arms. Phallus 1.1 × length of vinculum, gently S-shaped in lateral view; tip with a wide lobe, base widely funnel-shaped. Biology . The holotype was collected at light, long after midnight, within primary forest about 1600 m a.s.l. (W. Mey, pers. comm.). Distribution. Vietnam (this study). Etymology . The species is named after Wolfram Mey, a German lepidopterologist who is well known for his long-term research of systematics, biodiversity and biogeography of caddisflies and moths.