Macrobathra terniprocessa Li, 2023

Zhang, Di & Li, Houhun, 2023, Review of the genus Macrobathra Meyrick, 1883 (Lepidoptera: Cosmopterigidae) in China, Zootaxa 5330 (2), pp. 227-246 : 243-245

Macrobathra terniprocessa Li , sp. nov.

( Figs 16, 17 , 33 , 44 )

Type material. CHINA, Yunnan: Holotype ♁, Mt. Huanglian , Lvchun County (22.90°N, 102.31°E), 1898 m, 27–31.VII.2022, leg. S Yu & KJ Teng, slide No. ZD 21416.

Paratypes: 2♁ 4♀, same data as holotype, slide Nos. ZD 21420♁, ZD21415 ♀.

Diagnosis. The new species can be distinguished from its congeners by the trapezoidal lemon yellow fascia of the forewing, and the thorax in male with a yellow spot posteriorly; in the male genitalia by the anellus with three processes.

Description. Adult ( Figs 16, 17 ). Wingspan 17.0–19.0 mm.

Head with vertex dark brown, frons pale brown. Antenna dark brown, scape pale yellow at apex dorsally; flagellum alternated with light yellow dorsally. Labial palpus dark brown, with a pale yellow streak running from middle of second palpomere to apex of third palpomere on ventral surface.

Thorax and tegula dark brown, thorax with a pale yellow spot in male. Forewing dark brown; broad fascia lemon yellow, trapezoidal, from between 1/6 and 1/3 of costal margin broadened to dorsum, its outer margin oblique and serrate, inner margin straight in female, oblique and extended inward to base of dorsum in male; fringe dark brown. Hindwing and fringe taupe. Fore- and midlegs dark brown, tibia white at apex, first tarsomere ringed with white at base and apex, fifth tarsomere yellow; hindleg yellowish white on inner surface, dark brown on outer surface, femur with slivery scales, tibia pale yellow from basal 1/6 to 1/2, first tarsomere ringed with pale yellow at base and apex, fourth and fifth tarsomeres yellow.

Male genitalia ( Fig. 33 ). Socius symmetrical, widened to distal 1/5, then narrowed to pointed apex. Tegumen sub-trapezoidal. Valva asymmetrical: left valva wide basally, narrowed to rounded apex, with a cluster of bristles near apex; slenderly banded long process arising from dorsal margin before apex, arched, with strong thorns at apex; valvella with basal 1/3 broadened, thereafter distinctly narrow and subrapallel to before pointed apex, with sparse setae distally. Right valva with basal half uniformly wide, distal half obliquely narrowed to apex, with strong thorns near apex, slightly convex and with a few setae at middle on ventral margin. Anellus with a sub-triangular posterior process narrowed towards rounded apex and clustered with setae distally, with two lateral processes: left process shorter, digitate, right process narrower and longer than posterior process, uniform, rounded at apex, sparsely setose distally. Aedeagus tubular, with a bunch of clustered fine spines and a bunch of short spines.

Female genitalia ( Fig. 44 ). Apophyses posteriores about twice as long as apophyses anteriores. Posterior margin of seventh sternite mound-shaped. Lamella postvaginalis sub-elliptical; lamella antevaginalis being an irregularly shaped plate. Ductus bursae longer than anterior apophyses; accessory bursae from ductus bursae posteriorly, spermatheca ovate, with longitudinal carinae. Corpus bursae elliptical; paired signa each being a large sub-circular plate with a strong spine.

Distribution. China (Yunnan).

Etymology. The specific epithet of the new species is derived from the Latin terni- and Processus , referring to the anellus with three processes in the male genitalia.

Figures

FIGURES 12‒17. Adults of Macrobathra spp. 12. M. flavidus, male; 13. M. latipterophora, female; 14. M. quercea, male; 15. M. reticulatistria sp. nov., holotype, male; 16. M. terniprocessa sp. nov., holotype, male; 17. M. terniprocessa sp. nov., paratype, female. Scales = 2.0 mm.

FIGURES 30‒33. Male genitalia of Macrobathra spp. 30. M. latipterophora, slide No. W03126; 31. M. quercea, slide No. ZD21307; 32. M. reticulatistria sp. nov., holotype, slide No. ZZW08892; 33. M. terniprocessa sp. nov., holotype, slide No. ZD21416. Scales = 0.2 mm.

FIGURES 40‒44. Female genitalia of Macrobathra spp. 40. M. flavidus, slide No. ZD21286; 41. M. latipterophora, slide No. W03127; 42. M. quercea, slide No. ZD21313; 43. M. reticulatistria sp. nov., paratype, slide No. ZZW08893; 44. M. terniprocessa sp. nov., paratype, slide No. ZD21415; 40a−44a, enlarged signum. Scales = 0.5 mm.