Agonopterix introrsa Zhu & Wang, sp. nov.

(Figs 7, 30)

Type material. CHINA, Hebei: Holotype ♁, Mt. Wuling (40.63ºN, 117.43ºE), Xinglong County, 1000 m, 17.VI.2014. leg. SR Liu, slide No. ZXJ20453. Paratypes: Henan: 1♁, Lushi, 1500 m, 29.V.2000, leg. HL Yu, slide No. ZL 09004; Shaanxi: 1♁, Huoditang, Ningshan, 1620 m, 15.VI.1987, leg. HH Li, slide No. W 98014.

Diagnosis. The new species is similar to A. acutivalvula Wang, 2007 (Fan & Wang 2007) in both forewing pattern and male genitalia. It can be distinguished in the male genitalia by the reduced uncus, the juxta shallowly concave medially on the posterior margin and the cuiller reaching anterior 1/5 from the costa. In A. acutivalvula, the uncus is papilliform, the juxta is deeply concave in broad V shape on the posterior margin, and the cuiller almost exceeds the costa (Fan & Wang 2007: 217, fig. 8). It is similar to A. foliiformis sp. nov., and the differences between them are stated in the diagnosis of the latter species.

Description. Adult (Fig. 7). Wingspan 19.5–21.5 mm.

Head white, with sparse brown scales, neck with erect white scales basally, with white-tipped brown distally. Labial palpus yellowish white; basal segment black on outside; second segment mixed with black and greyish brown scales on outside and on dorsal surface, with protruding scales in distal half; third segment black near base, with a wide black ring beyond middle, black at apex. Antenna with scape greyish brown mixed with black, white on anterior margin and at terminal; pecten white; flagellum dark brown alternated with yellowish brown.

Mesonotum and tegula greyish brown. Foreleg with coxa yellowish white, femur, tibia and tarsus greyish brown mixed with black scales, tarsus yellowish white at apex of each tarsomere; midleg with femur grey mixed with black, tibia grey mixed with sparse black scales, ochreous at apex, tarsus grey mixed with black, yellowish white at apex of each tarsomere; hindleg with femur grey mixed with black, tibia yellowish white, with sparse black scales dorsally, tarsus yellowish white, with sparse black scales on outside.

Forewing ground colour dusty grey, with sparse black scales; costal margin with irregularly arranged black spots; cell with two black spots obliquely placed near middle, with a white spot on outer margin surrounded by black scales; diffused black speckle above preceding white spot; fringe concolourous with forewing. Hindwing and fringe grey.

Male genitalia (Fig. 30). Uncus reduced. Socii widened from narrow base to obtusely rounded apex, setose, widely apart at base, distance between base almost as wide as posterior margin of tegumen. Gnathos arrow-like, with fine spines. Valva wide at base, gradually narrowed to basal 3/4, sharply narrowed from distal 1/4 to narrowly rounded apex. Transtilla a narrow band; transtilla lobes dilated, setose. Sacculus reaching beyond 1/3 length of valva; cuiller narrowly clavate, extending obliquely inward, reaching anterior 1/5 from costa. Juxta shallowly concave medially on posterior margin, obtusely produced laterally, shrunken laterally near anterior margin, obtusely rounded on anterior margin; lateral lobes stout, semiovate, reaching posterior margin of juxta. Phallus wide in basal 1/4, uniformly slender medially, distal 1/4 tapered to apex; cornuti being numerous tiny spinules.

Female unknown.

Distribution. China (Hebei, Henan, Shaanxi).

Etymology. The specific epithet is derived from the Latin introrsus, referring to the cuiller extending obliquely inward.