Meleonoma anisodonta, Wang & Zhu, 2020

Wang, Shuxia & Zhu, Xiaoju, 2020, Study of the genus Meleonoma Meyrick, 1914 (Lepidoptera: Autostichidae) from China, with descriptions of fifteen new species, Zootaxa 4838 (3), pp. 331-357: 344-346

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Meleonoma anisodonta

sp. nov.

Meleonoma anisodonta   sp. nov.

( Figs. 13 View FIGURES 13−18 , 29 View FIGURES 29−34 , 39 View FIGURES 39−43 )

Type material. CHINA, Hainan: Holotype ♂, Mt. Wuzhi (18.91°N, 109.68°E), 710 m, 21.IV.2014, leg. TT Liu et al., slide No. YAH15059 View Materials GoogleMaps   . Paratypes (2♂ 8♀): 1♂ 1♀, same data as holotype, slide No. YAH15058 View Materials GoogleMaps   ♀; 1♀, Lizudadian, Shuiman Town, Mt. Wuzhi , 766 m, 6.VII.2015, leg. QY Wang et al   .; 1♀, Forest Park, Mt. Limu , 607 m, 12. V.2015, leg. PX Cong et al   .; 1♂, Mt. Limu , 640 m, 2. V.2014, leg. TT Liu et al., slide No. YAH15061 View Materials   ; 5♀, 620 m, Yinggeling , 28.IV–9. V.2010, leg. BB Hu & J Zhang   .

Diagnosis. The new species is similar to M. longaedeaga   sp. nov. in having a semicircular transtilla and a sacculus shallowly bilobed apically in the male genitalia. It can be distinguished in the male genitalia by the aedeagus shorter than the valva; and in the female genitalia by the corpus bursae approximately the same length as the ductus bursae and the signum placed at bottom. In M. longaedeaga   , the aedeagus is longer than the valva; the corpus bursae is about 2/3 the length of the ductus bursae and the signum is placed near bottom.

Description. Adult ( Fig. 13 View FIGURES 13−18 ). Forewing length 7.5–9.5 mm.

Head yellow, mixed with brown on vertex. Labial palpus yellow; first segment with blackish brown scales on outer surface; second segment with blackish brown scales on distal 2/3 laterally and on dorsal surface apically; third segment about 3/4 length of second segment, with a blackish brown ring near apex, with a longitudinal black line extending from base to near apex on ventral surface, indistinct in female. Antenna blackish grey on dorsal surface, yellow on ventral surface.

Thorax brown, mixed with yellow; tegula yellow, mixed with brown. Forewing ocherous yellow, paler in some individuals, covered with dense brown scales; costal margin with a black spot at base; median fascia blackish brown, extending from beyond middle of costal margin to end of fold on dorsum, inner margin straight, distinct, outer margin diffused; discal and plical spots blackish brown, discocellular spot merged with blackish brown fascia, indistinct; dorsum with a large black spot at base; black dots along distal part of costal margin through termen to median fascia on dorsum; fringe yellow except greyish brown on distal part of costal margin and around tornus. Hindwing and fringe deep grey. Legs dominantly whitish yellow; on ventral surface, foreleg dark brown except tibia with orange speckles, tarsus with basal two tarsomeres orange apically, midleg with femur blackish brown at apex, tibia dark brown except orange apically, tarsus blackish brown except basal tarsomere orange at apex, hindleg with scattered pale greyish brown scales on tibia.

Male genitalia ( Fig. 29 View FIGURES 29−34 ). Uncus conical, wide at base, slightly narrowed to obtuse apex, with a long seta at basal 1/3 on lateral margin. Tegumen with widest part longer than uncus; lateral arm gradually narrowed anteriorly. Valva narrow at base, gradually widened to 1/3, evenly wide medially, slightly narrowed from about middle to rounded apex distally, ventral margin obtusely angled at basal 1/3, obtuse in distal 2/3; costa with basal 2/3 heavily sclerotized, distal 1/3 gradually narrowed, reaching before apex of valva; transtilla expanded ventrad semicircularly, densely setose. Sacculus trapezoidal; dorsal margin concave before apex; ventral margin arched, sclerotized; apex heavily sclerotized, slightly concave medially, forming a semicircular dorsal lobe and an obtuse ventral lobe. Saccus sub-triangular, rounded apically. Juxta U-shaped; lateral arm slender. Aedeagus about 2/3 length of valva, gradually thickened from base to basal 2/5; distal 3/5 with dorsal part extended, bearing one ( Fig. 29a View FIGURES 29−34 ) or three stout dorsal denticles, apex bifurcate, forming a stout dorsal lobe rounded apically, and a shorter, slender finger-like ventral lobe; ventral part reaching about 2/3 of dorsal part, wrinkled, apex straight, with tiny teeth.

Female genitalia ( Fig. 39 View FIGURES 39−43 ). Papillae anales sub-quadrate, setose. Apophyses anteriores shorter than half length of apophyses posteriores. Eighth sternal plate spiculate, triangularly concave at middle and lined with long setae on posterior margin. Lamella antevaginalis large, sub-ovately annular, surrounding ostium bursae. Ductus bursae stout, with dense granules in posterior 4/5, smooth in anterior 1/5; ductus seminalis arising from before end of ductus bursae. Corpus bursae rounded, spiculate, about same length as ductus bursae; signum placed at bottom, elongate oval, with teeth, apical tooth largest.

Distribution. China (Hainan).

Etymology. The specific epithet of the new species is derived from the Latin anisodontus, referring to the dorsal denticles of the aedeagus varied in number among individuals.


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