Meleonoma compacta, Wang & Zhu, 2020

Wang, Shuxia & Zhu, Xiaoju, 2020, Study of the genus Meleonoma Meyrick, 1914 (Lepidoptera: Autostichidae) from China, with descriptions of twenty-one new species (II), Zootaxa 4881 (2), pp. 257-289 : 265-266

Meleonoma compacta sp. nov.

( Figs 8 , 30 )

urn:lsid:zoobank.org:act:3DE5582C-AC51-4F68-B6EB-38CD99F3D7F2

Type material. CHINA, Zhejiang: Holotype ♂, Qianmutian (30.40°N, 119.44°E), 1320 m, 1.VII.2013, leg. AH Yin & XC Wang, slide No. YAH15073 ( NKU).

Diagnosis. The new species is similar to M. segregnatha sp. nov. and M. flavifasciana Kitajima et Sakamaki, 2019 in the male genitalia. It can be distinguished from M. segregnatha by the forewing with a yellow fascia, the valva with several denticles on the ventral margin and the saccus nearly twice as long as the uncus; in M. segregnatha , the forewing lacks a fascia, the valva has a tuberous process on the ventral margin and the saccus is 1.6 times the length of the uncus. It can be distinguished from M. flavifasciana by the conic uncus, the valva uniformly wide except narrower at apex and the saccus nearly twice as long as uncus; in M. flavifasciana , the uncus is papillate, the valva is widened distally and the saccus is 7.5 times the length of the uncus ( Kitajima & Sakamaki 2019: 41, figs 14‾15). It is also similar to M. acutata sp. nov., and the differences between them are stated in the diagnosis of the preceding species.

Description. Adult ( Fig. 8 ). Forewing length 4.5 mm.

Head with vertex deep brown, frons yellow. Labial palpus yellow; second segment mixed with brown at apex; third segment 3/4 as long as second segment, mixed with brown medially. Antenna yellow, scape mixed with brown scales dorsally, flagellum annulated with blackish brown.

Thorax and tegula deep blackish brown. Forewing blackish brown; costal margin with inner yellow spot represented by an orange fascia running from basal 1/3 obliquely outward to middle of dorsum, then narrowly extended outward along dorsum for a short distance, edged with black scales, outer yellow spot at distal 1/3, horizontally elongate; cell with a large ovate orange spot at outer margin, edged with black scales; fringe deep blackish brown. Hindwing and fringe blackish brown. Legs pale yellow; on ventral surface, fore tarsus with a brown dot on basal tarsomere, brown on fourth tarsomere, tarsi of mid- and hindlegs with basal three tarsomeres brown except yellow at apices, all femora with brown scales, all tibiae brown except yellow apically.

Male genitalia ( Fig. 30 ). Uncus conic, straight, wide at base, narrowed to rounded apex. Gnathos sclerotized laterally, almost right-angled posterolaterally, not exceeding anterior margin of tegumen. Tegumen narrowed medially, sclerotized along anterior margin; lateral arm short, narrowed anteriorly. Valva rectangular, uniform in width except slightly narrower apically, length approximately twice of width, with strong setae in costal and distal areas; ventral margin heavily sclerotized, with several denticles, produced to a strong tooth apically; costa reaching distal 1/3 of valva, with sparse long setae; transtilla absent. Sacculus joined with valva by membrane, with distinct boundary; apex slightly narrower than base, heavily sclerotized, obtusely rounded, with 3–4 denticles. Saccus distinctly narrowed from wide base to middle, slightly narrowed from middle to narrowly rounded apex; nearly twice as long as uncus. Juxta slender, U-shaped. Aedeagus 3.0 times as long as valva, torch-shaped, shrunk at basal 1/3; distal half inflated ovately, rounded apically, membranous, with tightly compact fine spines and some wrinkles; cornutus absent.

Female unknown.

Distribution. China (Zhejiang).

Etymology. The specific epithet is derived from the Latin compactus, referring to the tightly compact fine spines of the aedeagus.

Figures

FIGURES 3–8. Adults of Meleonoma spp. 3, M. acutata sp. nov., ♂; 4, M. basiprocessa sp. nov., ♂; 5, M. bicornea sp. nov., ♂; 6, M. bidigitata sp. nov., ♂; 7, M. circinans sp. nov., ♂; 8, M. compacta sp. nov., ♂. All holotypes. Scales = 2.0 mm.

FIGURES 25–30. Male genitalia of Meleonoma spp. 25, M. acutata sp. nov., paratype, slide No. YAH15102; 26, M. basiprocessa sp. nov., holotype, slide No. YAH15170; 27, M. bicornea sp. nov., holotype, slide No. YAH15106; 28, M. bidigitata sp. nov., paratype, slide No. YAH15459; 29, M. circinans sp. nov., holotype, slide No. YAH15397; 30, M. compacta sp. nov., holotype, slide No. YAH15073. Scales = 0.2 mm.