Meleonoma unijugata, Zhu & Wang, 2022

Meleonoma unijugata sp. nov.

( Figs 15 View FIGURES 10−15 , 27 View FIGURES 22−27 )

urn:lsid:zoobank.org:act:

Type material. CHINA, Guangxi: Holotype ♂, Shaoping, Pingxiang , 280 m, 28.III.2013, leg. XF Yang, slide No. ZXJ19362 . Paratypes: 1♂, same data as holotype ; 4♂, 2–16.IV.2013, 2♂, 19.IV.2012, other data same as holotype, slide Nos. ZXJ19365, TZL19900, TZL19923, TZL19926, TZL19928 ; 1♂, Shiwandashan , 12–13.IV.2012, leg. XF Yang, slide No. TZL19901 .

Diagnosis. The new species can be distinguished from its congeners by the valva with a short spine beyond basal 1/3 on the ventral margin, the transtilla with a large hill-shaped process directed dorsad, and the sacculus with two horn-shaped apical processes in the male genitalia.

Description. Adult ( Fig. 15 View FIGURES 10−15 ). Forewing length 5.5–6.5 mm.

Head pale yellow. Labial palpus yellow, second palpomere with greyish-brown scales on outer surface.Antenna yellow on ventral surface; scape greyish brown, flagellum with greyish-brown annuli on dorsal surface.

Thorax and tegula yellow; tegula greyish brown basally. Forewing yellow, with yellowish and greyish-brown scales; discal and discocellular dots black, discal dot larger, placed at middle, discocellular dots doubled, at anterior and posterior angles of cell; terminal dots black, ill-defined, extending from distal part of costal margin along termen to before tornus; fringe yellowish brown. Hindwing and fringe greyish brown. Legs yellowish white; on ventral surface, femur of foreleg greyish brown except yellow laterally, tibia greyish brown, tibia of midleg greyish brown except yellowish white at middle and at apex, tarsi of fore- and midlegs blackish brown except yellowish white at base of basal tarsomere as well as at apices of basal two and apical one tarsomeres.

Male genitalia ( Fig. 27 View FIGURES 22−27 ). Uncus with basal 2/5 parallel sided, slightly widened and parallel sided from basal 2/5 to 4/5, thereafter narrowed to pointed apex. Tegumen narrowed medially; lateral arm banded, slightly widened medially, rounded at apex. Valva slightly widened from base to obtuse apex, setose in distal half; ventral margin with a setose patch bearing a small spine beyond basal 1/3 on ventral margin; costa banded, basal half uniform, distal half narrowed to before tip of costal margin; transtilla narrowed to pointed apex, with a large hill-shaped process directed dorsad. Sacculus wide at base, narrowed to obtuse apex, heavily sclerotized on dorsal margin, folded on ventral margin; apex with two stout horn-shaped processes. Saccus broadly inverted-triangular, approx. 1.5 times as long as uncus, slightly narrowed to rounded apex. Juxta broadly U-shaped. Aedeagus slightly shorter than valva, narrower in basal 1/3, uniform from beyond basal 1/3 to before 3/5, bilobed in distal 2/5: dorsal lobe banded, reaching before apex, ventral lobe heavily sclerotized, with two spines distally.

Female unknown.

Distribution. China ( Guangxi).

Etymology. The specific epithet is derived from the Latin unijugatus, referring to the two horn-shaped processes of the sacculus.