Nemophora spinatibaltea Sun, Wang et Li, 2022

Sun, Hao, Wang, Shuxia & Li, Houhun, 2022, Review of the degeerella species group of the genus Nemophora Hoffmannsegg 1798 (Lepidoptera: Adelidae) from China, Zootaxa 5219 (4), pp. 301-338 : 324-325

Nemophora spinatibaltea Sun, Wang et Li , sp. nov.

( Figs 23 , 45 )

urn:lsid:zoobank.org:act:126D7E97-F0AA-4076-950C-8C45D6CD72D1

Type material. CHINA, Shaanxi: Holotype ♂, Jiefangmen Village, Houzhenzi Town , Zhouzhi County, 1750 m, 19.VII.1987, leg. HH Li, slide No. SH 19158 . Paratypes: Shaanxi: 1♂, Ningshan County, 880 m, 17.VI.1987, leg. HH Li, slide No. SH 20152 ; Guizhou: 1♂, Dashahe, Daozhen , 1450 m, 25.V.2004, leg. SL Hao, slide No. SH 20160 ; Henan: 1♂, Baotianman, Nei Village , 1200 m, 28.V.2006, leg. X Zhang & JM Lv, slide No. SH 19099 .

Diagnosis. The new species is similar to N. japonica Stringer, 1930 and N. apiciprocessa sp. nov. superficially. It can be distinguished by the forewing having a black line along the anterior margin of the cell; in the male genitalia by the dome-shaped uncus, and the phallus with sclerotized belts and without denticles. In N. japonica and N. apiciprocessa , the forewings have a silvery gray streak along the anterior margin of the cell; in the male genitalia, the uncus is triangular, and the phallus has denticles and lacks sclerotized belts.

Description. Adult ( Fig. 23 ). Male wingspan 23.0−26.0 mm.

Head: Vertex pale yellow; frons golden yellow. Eye interocular index 0.46−0.48. Proboscis dark brown, with yellow scales in basal 1/3. Labial palpus 1.5−1.8 × vertical eye diameter; first and second palpomeres yellow, mixed with black hairs; third palpomere black. Antenna 3.3−3.5 × length of forewing; scape purplish bronzy; flagellum yellowish brown except dark brown in basal 1/4.

Thorax: Mesonotum golden yellow except pale yellow laterally; tegula golden yellow. Forewing ground color orange yellow from base to inner fascia, distal 1/4 purplish gray, termen bronzy yellow; black rectangular speckle at base between veins Sc and R 1; three silvery gray streaks edged with brown scales, with golden luster: first streak from base to near middle along costal margin, second streak from base to 4/5 of cell along posterior margin, third streak from near base to 2/5 of wing along 1A+2A; four black lines: first line from basal 1/4 to 2/5 of wing along R 1, second line from base to 4/5 of cell along anterior margin, third line from near base to 2/5 of wing along CuP, fourth line from base to near 2/5 of wing along dorsum; inner and outer fasciae silvery gray, edged with brown scales, inner fascia slightly curved outward at posterior 2/5, outer fascia slightly curved inward medially, extended outward anteriorly, medial fascia yellow, slightly sinuate; narrow yellow fascia from distal 1/4 of costal margin to beyond tornus, with radial longitudinal yellow stripes alternated by dark brown scales, with dense black scales between costal margin and R 5; fringe brown. Hindwing grayish brown except pale brown between costal margin and Rs; fringe grayish brown. Foreleg with coxa and femur yellow ventrally, purplish bronzy with metallic luster dorsally, tibia yellow ventrally, purplish bronzy dorsally, tarsus golden yellow; midleg yellow except tibia purplish bronzy dorsally; hindleg yellow except tibia brown apically. Epiphysis brown, at basal 2/5 of tibia, not reaching apex of tibia.

Abdomen: Dark brown.

Male genitalia ( Fig. 45 ). Socius ovoid, length 1.5 × width. Tegumen without median ridge. Uncus dome-shaped. Valva fused for basal 1/4, narrowly rounded apically, straight on costal margin, obliquely straight on ventral margin; sacculus reaching basal 1/5 of ventral margin. Transtilla arched, with a triangular anterior emargination; median process slightly exceeding posterior margin apically. Vinculum 2.6 × length of valva, narrowly rounded anteriorly. Phallus straight, 1.2 × length of vinculum, with a pair of sclerotized belts in distal 1/4; vesica with belts of short spines ( Fig. 45a ). Juxta 0.52 × length of phallus; lateral arm 0.22 × length of arrow head.

Female unknown.

Distribution. China (Guizhou, Henan, Shaanxi).

Etymology. The specific epithet is derived from the Latin spinatus and balteus, referring to the belts of the short spines of the vesica.

Figures

FIGURES 23‒26. Adults of Nemophora spp. 23, N. spinatibaltea sp. nov., holotype, ♂; 24, N. staudingerella, ♂; 25, N. staudingerella, ♀; 26, N. triuga sp. nov., holotype, ♂. Scales= 5.0 mm.

FIGURES 44‒47. Male genitalia of Nemophora spp. 44, N. seorsifascia sp. nov., holotype, slide No. SH20188; 45, N. spinatibaltea sp. nov., holotype, slide No. SH19158; 46, N. staudingerella, slide No. SH20138; 47, N. triuga sp. nov., holotype, slide No. SH19116; 44−47a, enlarged distal part of phallus. Scales= 0.2 mm, 44a‒47a= 0.1 mm.