Saridoscelis biprocessa Wang, 2023

Liu, Haoyu & Wang, Shuxia, 2023, Review of the genus Saridoscelis Meyrick, 1894 (Lepidoptera: Yponomeutidae) in China, with descriptions of four new species, Zootaxa 5375 (1), pp. 128-136 : 131-133

Saridoscelis biprocessa Wang , sp. nov.

urn:lsid:zoobank.org:act:6CCD5F52-FFDB-4810-A0F2-A25ACB42B1A6

( Figs 2 , 8 )

Type material. CHINA, Yunnan: Holotype ♁, Yuyingtang, Taiyanghe National Forest Park (22.68°N, 101.03°E), Pu’er , 1450 m, 19.IV.2015, leg. KJ Teng, slide No. LHY21764.

Paratype: Yunnan: 1♁, same data as holotype except dated 5.VII.2015, slide No. LHY21765.

Diagnosis. The new species can be distinguished from its congeners by the male eighth abdominal sternite with a longitudinal anteromedial ridge and a pair of slender posterior processes, and in the male genitalia by the heavily sclerotized sacculus narrowed distally and with a subtriangular process at base dorsally.

Description. Adult ( Fig. 2 ). Wingspan 12.0‒ 12.5 mm. Head white, with scattered dark brown tipped scales. Antenna white. Labial palpus white, except second palpomere dark brown on outer surface. Thorax and tegula white, with some dark brown scales. Forewing white, with several brown speckles formed by brown scales; costal margin dark brown along basal 1/5 and distal 1/5, with a dark brown subtriangular patch at distal 3/8; dark brown speckle near apex; dark brown line extending from below preceding speckle to apex; subtriangular brown patch edged with dark brown scales from between basal 1/3 and middle of dorsum narrowed obliquely outward to middle of wing approaching to outer margin of cell, with interruption at fold; subterminal line dark brown, extending obliquely from distal 1/4 of dorsum to tip of vein R 5; area between subterminal line and termen wholly suffused with brown scales; termen with three short black bands; fringe dark brown, tipped with white along costal margin, dark brown around apex, from pale yellowish brown to dark brown in basal half, pale yellowish brown with dark brown tip in distal half along termen, white mottled with yellowish brown along dorsum. Hindwing greyish brown; fringe pale yellowish grey. Legs white; femur and tibia of foreleg dark brown ventrally, tibia and tarsus of foreleg with dense long white scales dorsally, tarsi of mid- and hindlegs dark brown dorsally at base of each tarsomere.

Abdomen ( Fig. 8a ). Eighth abdominal sternite of male Y-shaped, narrowed medially; posterior margin with paired slender processes pointed at tip; sclerotized longitudinal anteromedial ridge from below posterior margin to near anterior margin.

Male genitalia ( Fig. 8 ). Uncus with basal 2/5 obtusely protruding on outer margin, distal 3/5 narrowed to acuminate apex. Socius narrowed at base, widened from near base to before obtused apex, with two plates of fringed sensillae at distal 1/3. Ventral plate of gnathos membranous, round. Tegumen concave in V-shape posteromedially, emarginated in triangle on anterior margin; anterolateral band slender. Valva with basal 3/5 subparallel-sided, distal 2/5 widened quadrately; apex roundly produced dorsoapically, with a small, rod-shaped process ventroapically; dorsoproximal process small, round, with long setae; costa triangularly produced and serrate at distal 1/3; ventral margin weakly concave medially. Sacculus 3/5 length of valva, heavily sclerotized, wide at base, narrowed distally, with a subtriangular basal process extending toward costa. Saccus 2/3 length of valva, slender, parallel-sided to obtused apex. Aedeagus tubular, slightly longer than saccus.

Female unknown.

Distribution. China (Yunnan).

Etymology. The specific epithet is derived from the Latin bi- and processus, referring to the two slender processes on the posterior margin of the eighth abdominal sternite.

Figures

FIGURES 1‒6. Adults of Saridoscelis spp. 1. S. baoshana Wang, sp. nov., holotype, male, slide No. LHY21766; 2. S. biprocessa Wang, sp. nov., holotype, male, slide No. LHY21764; 3. S. exstria Wang, sp. nov., holotype, male, slide No. LHY21053; 4. S. kodamai, female, slide No. JQ07347; 5. S. longiprocessa Wang, sp. nov., holotype, male, slide No. LHY21769; 6. S. sphenias, female, slide No. LHY21757. Scales = 2.0 mm.

FIGURES 7‒11. Male genitalia and eighth abdominal sternite of Saridoscelis spp. 7. S. baoshana Wang, sp. nov., holotype, slide No. LHY21766; 8. S. biprocessa Wang, sp. nov., holotype, slide No. LHY21764; 9. S. exstria Wang, sp. nov., holotype, slide No. LHY21053; 10. S. kodamai, slide No. LHY21763; 11. S. longiprocessa Wang, sp. nov., holotype, slide No. LHY21769. 7a‒11a, male eighth abdominal sternite. Scales = 0.2 mm.