Meleonoma globoidea Wang, 2021

Wang, Shuxia, Zhu, Xiaoju & Tao, Zhulin, 2021, Study of the genus Meleonoma Meyrick, 1914 (Lepidoptera: Autostichidae) from China (III), with descriptions of eighteen new species, Zootaxa 4995 (2), pp. 303-333 : 308-309

Meleonoma globoidea Wang , sp. nov.

( Figs 4 , 22 , 40 )

Type material. CHINA, Yunnan: Holotype • ♂, National Forest Park (24.83°N, 98.77°E), 2157 m, 22.VII.2015, Mt. Gaoligong , leg. K.J. Teng & X. Bai, slide No. YAH15384.

Paratypes: • 4♂ 3♀, 21‒24.VII.2015, other same data as holotype, slide No. ZXJ19251 ♀.

Diagnosis. The new species is similar to M. curvativa sp. nov. and M. lunata sp. nov. in male genitalia. It can be distinguished from the two species by the forewing without a median fascia, while the forewing has a median fascia in M. curvativa and M. lunata . It can be further distinguished from M. curvativa by the aedeagus straight in the male genitalia and the corpus bursae as long as the ductus bursae in the female genitalia, while the aedeagus is curved in distal half and the corpus bursae is 1/2 the length of the ductus bursae in M. curvativa ; from M. lunata by the apex of the valva obtusely rounded and the aedeagus with folds at distal 1/ 5 in the male genitalia, while the apex of the valva is almost truncate, and the aedeagus has folds running from beyond middle to apex in M. lunata .

Description. Adult ( Fig. 4 ). Forewing length 7.2−7.7 mm.

Head: vertex blackish brown; frons yellowish brown medially; occiput blackish brown, yellow laterally. Labial palpus yellow; first and second segments greyish black on outer surface, second segment with a greyish-black apical ring; third segment approximately 2/3 length of second segment, with a black line running from base to near apex on ventral surface, with sparse greyish-brown scales on dorsal surface. Antenna greyish black, scape yellow on ventral surface.

Thorax, tegula and forewing greyish black. Forewing with costal margin slightly arched, apex narrowly rounded; median costal spot yellow, rounded, situated before middle; distal spot yellow, small, situated beyond distal 1/3; plical spot black, rounded, at basal 2/3, edged with yellow scales on outer side; discal and discocellular spots black, discal spot rounded, discocellular spot banded; fringe greyish black, with a yellow basal line. Hindwing and fringe pale yellowish brown. Legs yellow; on ventral surface, foreleg greyish black except coxa and tibia yellow apically, tarsus yellow at apices of basal two and apical one tarsomeres, midleg with femur greyish black apically, tibia greyish black except yellow at middle and at apex, tarsus greyish black except yellow at apices of basal two and apical one tarsomeres, hindleg with scattered greyish-black scales.

Male genitalia ( Fig. 22 ). Uncus slightly wide at base, evenly narrow from near base to before middle, widened from distal 3/5 to rounded apex, with dense long setae distally. Tegumen narrowed medially, heavily sclerotized along margins; lateral arm widened to rounded apex. Valva narrow at base, widened to basal 3/5, almost uniformly wide in distal 2/5, with large setae from near base to before middle, with dense fine hairs distally, with a distinct ridge narrowed from base to beyond middle above ventral margin; apex obtusely rounded, with a few tiny teeth, apical spine from above ventral angle, curving downward; costa concave medially; transtilla slender, extending straightly to rounded apex. Sacculus wide at base, slightly narrowed to obliquely truncate apex, with a small setose triangular process at base, fused with sacculus basally; ventral margin straight, narrowly banded, with sparse short setae. Saccus shorter than uncus, semicircular, rounded apically. Juxta V-shaped; lateral arm slender, curved inward distally. Aedeagus straight, approximately as long as valva, tubular, with folds at distal 1/5, with a large beak-shaped process apically.

Female genitalia ( Fig. 40 ). Papillae anales quadrate, setose. Apophyses anteriores approximately 1/3 length of apophyses posteriores. Eighth sternal plate with a quadrate median groove, laterally with a triangular plate narrowed to posterolateral corner, lined with long setae on posterior margin, straight on anterior margin. Lamella antevaginalis banded ventrally, triangularly produced at each side dorsally. Antrum inverted trapezoidal, posterior margin shallowly concave, posterolaterally extended triangularly. Ductus bursae membranous; posterior half partly sclerotized on dorsal surface, evenly wide, anterior half dilated spherically; ductus seminalis arising from anterior 1/4 of ductus bursae. Corpus bursae approximately as long as ductus bursae, sub-ovate; signum being a rounded basal plate with a small apical spine.

Distribution. China (Yunnan).

Etymology. The specific epithet is derived from the Latin globoideus, referring to the ductus bursae with anterior half dilated spherically.

Figures

FIGURES 3−8. Adults of Meleonoma spp. 3, M. curvativa sp. nov., paratype, ♀; 4, M. globoidea sp. nov., holotype, ♂; 5, M. lunata sp. nov., paratype, ♂; 6, M. proapicalis sp. nov., holotype, ♂; 7, M. raphidacantha sp. nov., holotype, ♂; 8, M. ventridentata sp. nov., holotype, ♂. Scales = 2.0 mm.

FIGURES 21‒26. Male genitalia of Meleonoma spp. 21, M. curvativa sp. nov., holotype, slide No. ZXJ19260, 21a, variation of uncus, slide No. YAH15277; 22, M. globoidea sp. nov., paratype, slide No. YAH15384; 23, M. lunata sp. nov., paratype, slide No. ZXJ19267; 24, M. proapicalis sp. nov., paratype, slide No. ZXJ19241, 24a, enlarged view of aedeagus; 25, M. raphidacantha sp. nov., paratype, slide No. YAH16005; 26, M. ventridentata sp. nov., holotype, slide No. YAH15258. Scales = 0.5 mm, except 24a = 0.1 mm.

FIGURES 39‒43. Female genitalia of Meleonoma spp. 39, M. curvativa sp. nov., paratype, slide No. ZXJ19246; 40 M. globoidea sp. nov., paratype, slide No. ZXJ19251; 41, M. lunata sp. nov., paratype, slide No. ZXJ19249; 42, M. proapicalis sp. nov., paratype, slide No. ZXJ19250; 43, M. similifloralis, slide No. ZXJ19296. Scales = 0.5 mm.