Nemophora seorsifascia 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 : 323-324

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

( Figs 22 , 44 )

urn:lsid:zoobank.org:act:5E9BD84A-FA70-4386-ACB9-FFA8B175BE81

Type material. CHINA, Sichuan: Holotype ♂, Sanjiangcaoping Village , Wenchuan County, 1557 m, 11.VII.2014, leg. KJ Teng et al., slide No. SH 20188.

Diagnosis. The new species can be distinguished from its congeners in the forewing by the outer fascia separated by brownish yellow scales at anterior 2/5, and each distal yellow stripe with a black dot at base; in the male genitalia by the vesica with a cluster of spines.

Description. Adult ( Fig. 22 ). Male wingspan 22.0 mm.

Head: Vertex pale yellow; frons purplish yellow. Eye interocular index 0.50. Proboscis brown, with yellow scales in basal 1/4. Labial palpus 1.2 × vertical eye diameter; first and second palpomeres pale yellow, with black hairs ventrally; third palpomere brown. Antenna 3.7 × length of forewing; scape yellow; flagellum yellowish brown except dark brown in basal 1/6.

Thorax: Mesonotum golden yellow; tegula golden yellow except purplish bronzy distally. Forewing ground color yellow from base to inner fascia, distal 1/4 bluish gray mixed with black scales, termen purplish bronzy; with four silvery gray streaks, edged with sparse black scales: first streak from base to 2/5 along costal margin, with golden luster, second streak from middle to distal 1/5 of cell along anterior margin, with purplish bronzy luster, third streak from base to 3/4 of cell along posterior margin, fourth streak from near base to 2/5 of wing along 1A+2A; with four black lines: first line from base to beyond 2/5 of wing along R 1, second line from base to 3/5 of cell, near posterior margin of cell at base, separated at distal 1/4, third line from near base to beyond 2/5 of wing along CuP, fourth line from near base to 2/3 along dorsum; inner and outer fasciae bluish gray, edged with black scales anteriorly and posteriorly, inner fascia curved outward medially, outer fascia curved inward, weakly separated at anterior 2/5 by brownish yellow scales, extending outward anteriorly and posteriorly, medial fascia pale yellow, narrowed medially; two yellow stripes anteriorly and four yellow stripes posteriorly from distal 1/5 to before apex and near termen respectively, black dot at base of each posterior yellow stripe; fringe dark brown. Hindwing grayish brown except pale yellow between costal margin and Rs; fringe grayish brown. Foreleg yellow ventrally, purplish bronzy dorsally except tibia bluish brown; midleg yellow except tibia light purplish bronzy dorsally; hindleg yellow except tibia bronzy apically. Epiphysis dark brown, at middle of tibia, not reaching apex of tibia.

Abdomen: Dark brown.

Male genitalia ( Fig. 44 ). Socius ovoid, length 1.6 × width. Tegumen with distinct median ridge. Uncus domeshaped. Valva fused for basal 1/4, rounded at apex, straight on costal margin, obliquely straight on ventral margin; sacculus subquadrate, reaching near basal 1/3 of ventral margin. Transtilla with a triangular anterior emargination, triangularly produced anterolaterally; median process spiniform, reaching posterior 2/5 of tegumen apically. Vinculum 3.1 × length of valva, narrowly rounded anteriorly. Phallus 1.1 × length of vinculum, almost straight, with a pair of short sclerotized belts from distal 1/4 to 1/5 and a long sclerotized belt from distal 1/4 to 1/6; vesica with a cluster of spines and teeth ( Fig. 44a ). Juxta 0.46 × length of phallus; lateral arm 0.23 × length of arrow head.

Female unknown.

Distribution. China (Sichuan).

Etymology. The specific epithet is derived from the Latin seors- and fascia, referring to the outer fascia of the forewing weakly separated at anterior 2/5 by brownish yellow scales.

Figures

FIGURES 19‒22. Adults of Nemophora spp. 19, N. ravidifera sp. nov., holotype, ♂; 20, N. recurvatifera sp. nov., holotype, ♂; 21, N. recurvatifera sp. nov., paratype, ♀; 22. N. seorsifascia 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.