Promalactis campanulata Wang, 2019

Wang, Shuxia & Jia, Yanyan, 2019, Taxonomic study of the genus Promalactis Meyrick, 1908 (Lepidoptera: Oecophoridae) IV. The sakaiella species group, with descriptions of fifteen new species, Zootaxa 4563 (3), pp. 491-515 : 494-495

Promalactis campanulata Wang , sp. nov.

( Figs 5 , 18 )

Type material. CHINA , Guangxi Zhuangzu Autonomous Region: Holotype ♂, Mt. Daming (23.40°N, 108.48°E), 1250 m, 29.V.2011, coll. Linlin Yang & Yinghui Mou, slide No. DZH11040. Paratype: 1♂, 23.V.2011, slide No. DZH12367w, other same data as holotype.

Diagnosis. This species can be distinguished from other described species of the sakaiella species group by the valva with the distal 1/5 abruptly produced to a digitate process and the aedeagus with a hooked ventroapical process. It is similar to P. apicidigitata Wang sp. nov. in the structure of the male genitalia, but can be distinguished by the forewing having a broad basal fascia that does not reach the costal margin anteriorly and a silvery grey postmedian fascia, but lacks a white costal spot. In P. apicidigitata Wang , sp. nov. the forewing has a basal fascia that reaches the costal margin and a rounded white costal spot, but lacks a postmedian fascia.

Description. Adult ( Fig. 5 ) wingspan 12.5 mm. Head with vertex snowy white, frons brown, occiput dark rust brown. Labial palpus with first segment yellowish white on inner surface, dark brown on outer surface; second segment yellow on inner surface, ocherous brown on outer surface, mixed with black scales on dorsal side; third segment black except white at base and apex, with a fine longitudinal white line on inner surface. Antenna with scape white, black at apex dorsally; flagellum white alternated with black dorsally, dark brown ventrally. Thorax and tegula rust brown. Forewing pale ocherous yellow except basal 1/4 of costal margin black; basal fascia ocherous brown, not reaching costal margin anteriorly, with a white line from base of costal margin oblique outward to basal 1/6 of dorsum, with a wide white streak along outer margin from upper margin of cell to dorsum, both white lines edged with black scales; postmedian fascia deep silvery grey, from distal 2/5 of costal margin oblique inward and slightly narrowed to dorsum before end of fold, edged with dense black scales; distal patch blackish brown, not diffused; cilia orange yellow except blackish grey on extension of distal patch and postmedian fascia. Hindwing and cilia greyish brown. Foreleg greyish white on ventral side, on dorsal side femur white, tibia and tarsus black, tibia with white mark at base and middle respectively, with white tuft apically, tarsus marked with white at apex of each tarsomere; midleg with tibia greyish white, tarsus grey with greyish white scales on ventral side, tibia and tarsus black, tibia with an oblique white line at base, with a white tuft apically, tarsus marked with white on dorsal side; hindleg yellow ventrally, black dorsally except each tarsomere marked with white.

Male genitalia ( Fig. 18 ). Uncus bell-shaped, wide at base, slightly narrowed to middle, abruptly narrowed from middle to pointed apex, lined with setae medially on lateral margin. Gnathos as long as 2/3 length of uncus, linguiform, granulose on distal 1/3; lateral arms about half length of gnathos, broad, ribbon-like. Tegumen divided from middle, anterior half narrowed triangularly. Valva sub-campanulate, basal half broad and parallel, abruptly narrowed from middle to basal 3/4, then abruptly narrowed to a slender digitate distal process; costa narrow, protruded medially, reaching before distal process; sacculus, uniform from base to distal 1/4, shallowly concave in triangle at dorsal margin before distal 1/4. Saccus twice length of uncus, wide at base, slightly narrowed to a rounded apex. Juxta being a circle formed by a wide ribbon-like sclerite; basal lobe short, digitate. Aedeagus straight, basal 3/5 uniform and slender, distal 2/5 dilated, sclerotized ventrodistally, produced to a large hooked ventroapical process; cornutus absent.

Female unknown.

Distribution. China (Guangxi).

Etymology. This epithet is from the Latin campanulatus, referring to the bell-shaped valva.

Figures

FIGURES 5–10. Adults of Promalactis spp. 5. P. campanulata sp. nov., holotype, ♂; 6. P. tibetica sp. nov., holotype, ♂; 7. P. subquadrata sp. nov., holotype, ♂; 8. P. auremacularis sp. nov., paratype, ♂; 9. P. curvitaeniata sp. nov., paratype, ♀; 10. P. lvovskyi sp. nov., holotype, ♂. Scales =1.0 mm

FIGURES 17–20. Male genitalia of Promalactis spp. 17. P. apicidigitata sp. nov., holotype, slide No. JYY17558; 18. P. campanulata sp. nov., holotype, slide No. DZH11040; 19. P. tibetica sp. nov., holotype, slide No. JYY17326; 20. P. subquadrata sp. nov., holotype, slide No. JYY17553. Scales =0.2 mm.