Ressia disparilis Li, 2023

Zhang, Di & Li, Houhun, 2023, Review of the genus Ressia Sinev, 1988 (Lepidoptera: Cosmopterigidae), with descriptions of four new species from China, Zootaxa 5360 (4), pp. 583-592 : 586-588

publication ID

https://doi.org/ 10.11646/zootaxa.5360.4.7

publication LSID

lsid:zoobank.org:pub:E967718F-F071-49BC-B69D-D4D0E8979530

DOI

https://doi.org/10.5281/zenodo.10169370

persistent identifier

https://treatment.plazi.org/id/65A44BC5-AED7-4E00-9955-3035C7C1CA27

taxon LSID

lsid:zoobank.org:act:65A44BC5-AED7-4E00-9955-3035C7C1CA27

treatment provided by

Plazi

scientific name

Ressia disparilis Li
status

sp. nov.

Ressia disparilis Li , sp. nov.

( Figs 4 View FIGURES 3‒8 , 10 View FIGURES 9‒14 , 16 View FIGURES 15‒19 )

urn:lsid:zoobank.org:act:65A44BC5-AED7-4E00-9955-3035C7C1CA27

Type material. Holotype ♁. CHINA, Hainan: Tianchi, Jianfengling (18.73°N, 108.86°E), 787 m, 9.III.2016, leg. QY Wang et al., slide No. ZD 21076. GoogleMaps

Paratypes: 5♁ 1♀, same data as holotype, except dated 5–8.III.2016, leg. QY Wang et al., slide No. ZD 21077♁, ZD21577♁, ZD21584 GoogleMaps ♀.

Diagnosis. The new species can be distinguished from its congeners by the forewings with markings of bluish-green metallic luster, and having a small silvery white stripe at the tornus; in the male genitalia by the falculate valvae; and the pleural lobes of the male eighth segment with two apical processes greatly different in shape and length.

Description. Adult ( Fig. 4 View FIGURES 3‒8 ). Wingspan 9.5–11.0 mm.

Head. Vertex dark brown, frons grayish yellow. Antenna dark brown except grayish yellow at apex dorsally, grayish yellow ventrally. Labial palpus with second palpomere yellow, mixed with black scales in distal half; third palpomere dark brown, yellow dorsobasally.

Thorax. Dorsum of mesothorax and tegula dark brown. Forewing dark brown; markings silvery white, with bluish-green metallic luster: subbasal fascia almost uniformly wide, straight, extending from basal 1/4 of costal margin to dorsum; wedge-shaped stripe at 1/2 and 3/4 of costal margin as well as near end of fold respectively, tornal stripe smallest and narrowest; fringe concolorous to forewing. Hindwing and fringe dark brown. Fore- and midlegs with coxae and femora dark brown ventrally, yellowish white dorsally, tibiae and tarsi dark brown, tibiae yellowish white at 1/2 and apex dorsally, first tarsomere ringed with yellowish white at base and apex, 4–5 tarsomeres white; hindleg with femur and tibia dark brown except tibia yellowish white at 1/2 and apex on outer surface, yellowish white on inner surface, 1–2 tarsomeres dark brown, first tarsomere ringed with yellowish white at apex, 3–5 tarsomeres white.

Male abdomen and genitalia ( Fig. 10 View FIGURES 9‒14 ):

Abdomen. Furcate process of eighth tergum indistinctly narrowed to rounded apex. Pleural lobes of eighth segment subrectangular, produced at middle on dorsal margin, obtuse on ventral margin; apex with two processes: dorsal process very small, triangular, ventral process long, slightly broadened medially, distinctly narrowed distally, hooked apically.

Male genitalia. Socus with left brachium spatulate, about 2/5 length of right brachium; right brachium slender, curved at distal 1/5, pointed at apex. Valva falculate, slightly broad at base, uniformly slender from near base to cucullus; cucullus narrowed to apex, with dense setae on ventral surface. Left valvella slender, curved at basal 3/4, with sparse setae at apex. Phallus tapered to distal 1/5, narrowly rounded at apex.

Female genitalia ( Fig. 16 View FIGURES 15‒19 ). Apophyses posteriores about 1.5 times as long as apophyses anteriores. Sterigma subtrapezoidal, with a sclerotized horn-shaped ventral sac.Antrum short, funnel-shaped. Ductus bursae membranous, as long as apophyses posteriores. Corpus bursae elongate subrectangular, about three times length of ductus bursae; signum absent.

Distribution. China (Hainan).

Etymology. The specific epithet is derived from the Latin disparilis , referring to the two differently sized and shaped apical processes of the pleural lobes of the male eighth segment.

Kingdom

Animalia

Phylum

Arthropoda

Class

Insecta

Order

Lepidoptera

Family

Cosmopterigidae

Genus

Ressia

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