Njalkanola puerensis Ruan, Yu & Hu, sp. nov.

(Figs 4–8)

Type material. Holotype male: 云南Ḃ洱 ª, 22.72’N, 100.92’E, 21.vii.2023, 1436 m, Oi彦卿, 于咏 (Yunnan Prov., Puer City, Male, 22.72’N, 100.92’E, 21.vii.2023, 1436 m, Yanqing Hu & Yong Yu); SWUST.

Paratypes. 3 males and 4 females, same data as holotype .

Diagnosis. Njalkanola puerensis sp. nov. is externally reminiscent of N. bimaculata by the patterns of forewings, with the distinctive characteristics between the two species as follows: Njalkanola puerensis sp. nov. has a longitudinal antemedial line after begining of cell (Figs 4, 7), an apex of the ventral lobe of the valva without process, a slender harpe as long as saccus, a thick aedeagus with a bone-shaped cornutus (Figs 5, 6), apophyses posteriores longer than apophyses anteriores, a twisted ductus bursae and an ovoid corpus bursae with a sclerotized ribbon-like signum (Fig. 8), while N. bimaculata has an antemedial line consisting of dots after beginning of cell (Fig. 1), an apex of the ventral lobe of valva with a distal process, a thin harpe longer than saccus, a thin aedeagus with a slender, tube-like cornutus (Figs 2, 3), apophyses posteriores as long as apophyses anteriores, a ductus bursae longer than corpus bursae and a rounded corpus bursae without signum (László et al. 2014: 137, Fig. 2). In addition, N. puerensis sp. nov. also resembles Njalkanola coremata (Holloway, 2003) in the configuration of the genitalia. Njalkanola coremata has a distal process of the ventral lobe of the valva, a straight harpe shorter than saccus, a slender aedeagus, a triangular cornutus, a ductus bursae as long as corpus bursae and an almost rounded corpus bursae with a short signum medially (László et al. 2014: 138, Figs 4, 5); in forewings, N. puerensis sp. nov. has remarkable patches on the costal margin and a zigzag postmedial line, while the costal margin of N. coremata lacks markings and the postmedial line is straight (László et al. 2014: 26, Figs 3, 4).

Description. Adult (Figs 4, 7). Wingspan 15–17 mm, forewing length 7 mm. Head gray; antenna pale brown, bipectinate in male; labial palpus porrect, mostly covered with gray scales. Thorax and collar covered with gray scales. Forewing ground color gray, costal margin brown; basal line blackish brown, only discernible at costal margin; antemedial line blackish brown, forming a blackish brown dot before cell and a zigzag line after beginning of cell; medial line grayish brown, feeble, forming a darker brown dot at costal margin; postmedial line blackish brown, zigzag; subterminal line brown; terminal line gray; cilia brown with black ornaments. Hindwing grayish brown; discal spot as a subtle dash, grayish black. Abdomen brown.

Male genitalia (Figs 5, 6). Uncus membranous; tegumen slender; valva bilobate distally, dorsal lobe of valva broader and longer than ventral lobe of valva; harpe elongate and slender, upcurved distally, almost as long as saccus; saccus V-shaped. Aedeagus about three times as long as cornutus; vesica with a bone-shaped cornutus.

Female genitalia (Fig. 8). Papilla analis slender; apophyses posteriores twice longer than apophyses anteriores; ostium broad, weakly sclerotized; antrum sclerotized; ductus bursae membranous; corpus bursae large, twice longer than membranous portion of ductus bursae, ovoid, membranous, with a transverse and strip-shaped signum medially.

Distribution. China (Yunnan).

Etymology. The specific name is derived from the name of the type-locality, the Puer City, Yunnan Province, China. An adjective in the nominative singular.