Macrobathra aequidistans Zhang & Li 2023, sp. nov.
Creators: name: Zhang, Di
name: Li, Houhun
Publisher: name: Zenodo
Year: 2023
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Lepidoptera
Cosmopterigidae
Macrobathra
Macrobathra aequidistans

description: Macrobathra aequidistans Li, sp. nov.
(Figs 2, 19, 34)
Type material. CHINA, Yunnan: Holotype ♁, Zijiaosuo, Jingdong County, 1140 m, 20.VI.2013, leg. ZG Zhang, slide No. ZD 21349.
Paratypes:2♁ 1♀, Zijiaosuo, Jingdong County, 1140 m, 30.V–20.VII.2013, leg. ZG Zhang, slide No. ZD 21329♁, ZD21350 ♀; 1♁, Yexianggu (22.17°N, 100.87°E), 762 m, 12.VII.2015, leg. KJ Teng & X Bai, slide No. ZD 21346.
Diagnosis. The new species can be distinguished from its congeners by the zinc-yellow subbasal fascia of the forewing uniform in width; in the male genitalia by the anellus trapezoidal and heavily sclerotized, and the valva produced on the inner margin.
Description. Adult (Fig. 2). Wingspan 10.0– 11.5 mm.
Head with frons and vertex dark brown, frons with longitudinal pale yellow line laterally. Antenna dark brown, except scape white at apex, with a pale yellow longitudinal line ventrally; flagellum annulated with pale yellow dorsally, basal 1/3 yellowish white ventrally. Labial palpus: second palpomere pale yellow, deep brown mixed with yellow at apex; third palpomere dark brown, except basal 1/3 pale yellow dorsally, with a pale yellow streak running from base to apex on ventral surface.
Thorax and tegula dark brown, tegula with a yellow spot on outer margin. Forewing dark brown; subbasal fascia zinc yellow, running from basal 1/5 of costal margin to dorsal margin, aequilate, excurved at middle; zinc yellow spot at 1/2 and 4/5 of costal margin as well as at tornus, the spot at costal 4/5 largest, inverted triangular; fringe dark brown. Hindwing and fringe deep brown. Foreleg with coxa dark brown mixed with yellow, femur dark brown ventrally, yellow mixed with dark brown dorsally, tibia and tarsus dark brown, except tibia pale yellow at basal 1/3 and 2/3 on outer surface, first tarsomere ringed with pale yellow at base and apex, fifth tarsomere pale yellow; midleg with femur yellowish white mixed with dark brown scales, tibia and tarsus dark brown, except tibia pale yellow at apex, first tarsomere ringed with pale yellow at base and apex; hindleg with femur light brown, tibia dark brown on outer surface, ringed with pale yellow at basal 1/4 and apex, light brown mixed with black scales on inner surface, tarsus with first tarsomere dark brown, other tarsomeres pale yellow mixed with black scales.
Male genitalia (Fig. 19). Socius with brachia bent inward, almost equal in length and strongly sclerotized; left brachium with narrowly rounded apex, right brachium with flat apex. Tegumen sub-trapezoidal. Valva uniformly wide and heavily sclerotized, with sparse setae, asymmetrical: left valva produced medially on inner margin, right valva produced near base on inner margin. Saccus 2 times length of valva, aequilate, rounded at apex. Anellus trapezoidal and heavily sclerotized. Aedeagus inflated to basal 1/4, then narrowed to apex.
Female genitalia (Fig. 34). Apophyses posteriores about twice as long as apophyses anteriores. Seventh sternite band-shaped and sclerotized on posterior margin, with numerous short setae. Sterigma triangular. Ductus bursae slightly longer than anterior apophyses, basal 1/3 aequilate and sclerotized, distal 2/3 membranous; accessory bursae arising from below posterior 1/3 of ductus bursae, spermatheca ovate. Corpus bursae ovoid, shorter than ductus bursae; paired signa each being a narrowly elongate plate with a tooth.
Distribution. China (Yunnan).
Etymology. The specific epithet of the new species is derived from the Latin aequidistans, referring to the uniformly wide subbasal fascia of the forewing.
description: Published as part of Zhang, Di & Li, Houhun, 2023, Review of the genus Macrobathra Meyrick, 1883 (Lepidoptera: Cosmopterigidae) in China, pp. 227-246 in Zootaxa 5330 (2) on pages 231-232, DOI: 10.11646/zootaxa.5330.2.3, http://zenodo.org/record/8249282