Agonopterix nephimacula Zhu & Wang, 2023

Zhu, Xiaoju, Zhang, Li & Wang, Shuxia, 2023, New species and newly recorded species of the genus Agonopterix Hübner, [1825] (Lepidoptera: Depressariidae) from China, Zootaxa 5258 (4), pp. 379-404 : 387-388

Agonopterix nephimacula Zhu & Wang , sp. nov.

( Figs 9 , 32 , 46 )

Type material. CHINA, Xizang: Holotype ♁, Zhangmu Town (27.98ºN, 85.97ºE), Nielamu County, 1961 m, 8.VII.2019, leg. MJ Qi & JQ Deng, slide No. ZXJ20473 . Paratypes: 1♀, same data as holotype, slide No. ZXJ20558 ; Xizang: 1♀, Sangzhenka Village, Gedang Town , Motuo County, 31.V‒5.VI.2021, leg. HL Han et al .

Diagnosis. The new species is similar to A. parinkini Lvovsky, 2011 in both forewing pattern and genitalia. It can be distinguished by the subrectangular gnathos and the slender cuiller in the male genitalia; and by the triangular signum in the female genitalia. In A. parinkini , the gnathos is elliptical and the cuiller is stouter and more expanded; and the signum is elongate (Lvovsky 2011: 151, figs 3‒5).

Description. Adult ( Fig. 9 ). Wingspan 20.0‒21.0 mm.

Head yellow, with erect black scale tufts posterolaterally. Labial palpus with basal and second segments black mixed with yellow scales, second segment without protruding scales; third segment yellow speckled with black scales. Antenna with scape black except yellow on ventral surface; pecten yellow; flagellum black in basal half and black alternated with yellow in distal half on dorsal surface, yellow on ventral surface.

Mesonotum and tegula black. Fore- and midlegs black, femur of midleg mixed with yellow scales distally on dorsal surface, tarsi of fore- and midlegs yellow at base of basal one tarsomere, as well yellow at apex of each tarsomere; hindleg with femur yellow on ventral surface, black except yellow in distal 1/4 on dorsal surface, tibia black speckled with yellow on dorsal surface, yellow on ventral surface, tarsus black except yellow at apex of each tarsomere on outside, and at basal one tarsomere and at apices of rest tarsomeres on inside.

Forewing ground colour yellow, tinged with yellowish brown; costal margin with several black dots and short streaks; triangular black patch at base widened outward, its outer margin almost straight; cell with a rounded black spot at middle, with a small white spot on outer margin entirely surrounded by black and yellowish brown scales, these scales diffused upward to confluent with costal dots, loosely forming a large nebulous sub-triangular yellowish brown maculation with black scales; terminal spots black, evenly spaced along termen to before tornus; fringe concolourous with wing, darker in basal half. Hindwing and fringe dark brown.

Male genitalia ( Fig. 32 ). Uncus small, produced triangularly. Socii small, squared, setose. Gnathos rectangular in shape, finely spined. Transtilla a slender band; transtilla lobes ovate, hairy. Valva wide basally, narrowed distally, rounded apically, with long setae ventrally, denser apically. Sacculus reaching before half length of valva; cuiller slender, reaching costal margin of valva. Juxta irregularly rounded, obtusely produced on anterior and posterior margins; lateral lobes very short, lineate. Phallus tubular, truncate at apex; cornuti being many fine spinules.

Female genitalia ( Fig. 46 ). Apophyses anteriores about half length of apophyses posteriores. Eighth sternal plate with anterior margin triangularly produced medially. Ostium in middle of eighth sternite, with a slender belt posteriorly ( Fig. 46a ). Ductus bursae long, coiled, with pleat at each side posterolaterally, with a sclerotized band in posterior half; ductus seminalis arising from posterior part of ductus bursae. Corpus bursae sub-triangular; signum triangular, densely dentated, denticles largest at both horizontal sides.

Distribution. China (Xizang).

Etymology. The specific epithet is derived from the Latin neph- and macula, referring to the large nebulous maculation of the forewing.

Figures

FIGURES 9‒16. Adults of Agonopterix spp. 9, A. nephimacula sp. nov., holotype, ♁; 10, A. nivimacularis sp. nov., holotype, ♁; 11, A. parallela sp. nov., holotype, ♁; 12, A. simipullella sp. nov., paratype, ♁; 13, A. sphaeroidea sp. nov., holotype, ♁; 14, A. abditella, ♁; 15, A. angelicella; 16, A. arctica. Scales = 2.0 mm.

FIGURES 30‒35. Male genitalia of Agonopterix spp. 30, A. introrsa sp. nov., holotype, slide No. ZXJ20453; 31, A. magnimacularis sp. nov., holotype, slide No. ZXJ20395; 32, A. nephimacula sp. nov., holotype, slide No. ZXJ20473; 33, A. nivimacularis sp. nov., paratype, slide No. ZXJ20404, 33a, enlarged uncus, slide No. ZXJ20436; 34, A. parallela sp. nov., holotype, slide No. ZXJ20557; 35, A. simipullella sp. nov., holotype, ZXJ20486. Scales = 0.2 mm.

FIGURES 46‒49. Female genitalia of Agonopterix spp. 46, A. nephimacula sp. nov., paratype, slide No. ZXJ20558; 47, A. nivimacularis sp. nov., paratype, slide No. ZXJ20568; 48, A. abditella, slide No. ZL08090; 49, A. arenella, slide No. ZL08210; 46a-49a, enlarged ostium. Scales = 0.5 mm, 46a-49a = 0.1 mm.