Agonopterix gibbosa 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 : 383-384

Agonopterix gibbosa Zhu & Wang , sp. nov.

( Figs 5 , 28 )

Type material. CHINA, Guangxi: Holotype ♁, Jiuniutang, Mt. Mao'er , 19.IV.2002, leg. SL Hao & HJ Xue, slide No. ZL 08250.

Diagnosis. The new species is similar to A. laterella ( Denis & Schiffermüller, 1775) in male genitalia. It can be distinguished by the forewing with a white spot on the outer margin of the cell; and by the developed uncus in the male genitalia. In A. laterella , the cell does not have a white spot, and the uncus is degenerated (Huisman 2012: 87, figs 16, 40).

Description. Adult ( Fig. 5 ). Wingspan 22.5 mm.

Head with vertex dark brown; frons white; long yellowish brown scales below eye; occiput with erect scales tufts, dark brown medially, lateral sides yellowish white basally, becoming dark brown with yellowish white tip. Labial palpus with basal segment black on outer surface, yellowish white on inner surface; second segment white mixed with brown and black scales, scales on ventral surface longitudinally sulcate in middle, with protruding scales in distal 2/3; third segment with black ring near base and at middle respectively, black at apex. Antenna with scape black, yellowish white on anterior and posterior margins, as well at apex ventrally; pecten yellowish white, brown distally, white at apex; flagellum brown alternated with yellow.

Mesonotum and tegula dark brown, mixed with ochreous and yellowish white, tegula yellowish white marginally. Foreleg brown, tibia mixed with ochreous dorsally, yellowish white mixed with black ventrally, tarsus yellowish white mixed with black, three apical tarsomeres black dorsally; midleg with femur brown, tibia brown mixed with ochreous, tarsus brown mixed with yellowish white; hindleg with femur brown dorsally, yellowish white ventrally, tibia ochreous mixed with black on outside, yellowish white on inside, tarsus brown with sparse yellowish white on outside, yellowish white with sparse brown scales on inside of basal one tarsomere, rest tarsomeres brown, yellowish white at apex.

Forewing yellowish brown, yellowish white at base and from base to basal 2/5 below costal margin, with black scales nearly evenly dotted over the wing, with denser brown scales distally; costal margin with black spots irregularly arranged, two medial spots larger; cell with two erect black spots obliquely placed near middle, with an erect white spot on outer margin surrounded by brown and black scales; dorsum with diffused black speckle at base; terminal spots black; fringe grey, blackish grey mixed with ochreous near apex. Hindwing and fringe yellowish grey.

Male genitalia ( Fig. 28 ). Uncus developed, in papillary shape, reaching end of socii. Socii elliptical, widened from base to obtuse apex, setose. Gnathos fusiform, finely spined; lateral arms longer than gnathos. Valva wide at base, gradually narrowed to before distal 1/4, distal 1/4 distinctly narrowed to narrowly rounded apex. Transtilla banded, widened medially; transtilla lobes dilated, hairy. Sacculus reaching approximately 1/3 length of valva; cuiller excurvated, apically reaching anterior 1/4 from costa, wide at base, narrowed to basal 1/3, inflated inwards and forming a distinct hump medially, distal 1/3 uniformly slender. Juxta cup-shaped, straight on posterior margin, shrunken at anterior 1/4 laterally; lateral lobes large, reaching posterior margin of juxta. Phallus stout, median width 1/3 of the length; cornuti being many fine spinules.

Female unknown.

Distribution. China (Guangxi).

Etymology. The specific epithet is derived from the Latin gibbosus, referring to the cuiller with a distinct hump medially.

Figures

FIGURES 1‒8. Adults of Agonopterix spp. 1, A. basinigra sp. nov., ♁; 2, A. cochleata sp. nov., ♁; 3, A. epunctata sp. nov., ♁; 4, A. foliiformis sp. nov., ♁; 5, A. gibbosa sp. nov., ♁; 6, A. hypodroma sp. nov., ♁; 7, A. introrsa sp. nov., ♁; 8, A. magnimacularis sp. nov., ♁. All holotypes. Scales = 2.0 mm.

FIGURES 24‒29. Male genitalia of Agonopterix spp. 24, A. basinigra sp. nov., slide No. ZXJ20437; 25, A. cochleata sp. nov., slide No. ZXJ20439, 25a, enlarged cuiller; 26, A. epunctata sp. nov., slide No. ZL09024; 27, A. foliiformis sp. nov., slide No. ZXJ20408; 28, A. gibbosa sp. nov., slide No. ZL08250; 29, A. hypodroma sp. nov., slide No. ZXJ20368. All holotypes. Scales = 0.2 mm.