Spilonota laticucullusa Choi, Bae & Nasu 2024, sp. nov.
Creators: name: Choi, Seokhoon
name: Kim, Jeong-Nam
name: Bayarsaikhan, Ulziijargal
name: Jang, Chang Moon
name: Kim, Hanul
name: Nasu, Yoshitsugu
name: Bae, Yang-Seop
Publisher: name: Zenodo
Year: 2024
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Lepidoptera
Tortricidae
Spilonota
Spilonota laticucullusa

description: Spilonota laticucullusa Choi, Bae & Nasu, sp. nov.
urn:lsid:zoobank.org:act: 410B0C41-7BC4-4CA0-AC85-25D7CFC854A1
(Figs 1H, 2I, 3F, 4I, 5G)
Type materials [Korea]. Holotype: ♂, Gangwon Prov., Mt. Taebaek, 27. VI. 1996 (Bae, Paek, Lee & Ahn), genitalia slide No. INU-13581. Paratypes: 1 ♀, Yangpyung-gun, Mt. Odae, 24. VIII. 1999 (Bae et al.), genitalia slide No. INU-13577; 1 ♀, Gyeonggi Prov., Mt. Cheonma, 13. VII. 1996 (Y.S. Bae), genitalia slide No. INU-13583; 1 ♂, Gyeonggi Prov., Mt. Gwangduk, 20. VII. 1996 (Bae, Paek, Lee, Ahn & Jeon), genitalia slide No. INU-13590; 1 ♀, Gyeonggi Prov., Mt. Gwangduk, 20. VII. 1996 (Bae, Paek, Lee, Ahn & Jeon), genitalia slide No. INU-13614; 1 ♂, Mt. Daedun, 23. V. 1992 (K. T. Park), genitalia slide No. INU-13616; 1 ♂, Mt. Odae, 26. VI. 1989 (K. T. Park), genitalia slide No. INU-13617; 1 ♂, Mt. Odae, 26. VI. 1989 (K. T. Park), genitalia slide No. INU-13618; 1 ♂, Taebaek-shi, Mt. Taebaek, 12. VI. 1999 (Bae, Lee & Ahn), genitalia slide No. INU-13631.
Diagnosis. Compared to S. eremitana, it is not easy to make a straightforward comparison due to the highly similar appearance of the forewings. However, the color is slightly darker, and the silvery line pattern on the inner speculum is thicker. In the male genitalia, the socii is thicker, and the cucullus is more inflated. In the female genitalia, there is a distinct difference with the absence of a medially concave on lamella antevaginalis.
Description. Adult. Wingspan 16–18 mm; head and thorax dark brown; frons dark brown, with moderate, short projecting scales in anterior part, remainder of frons with about 2x length projecting scales; labial palpus dark brown, anterior straight protruded; second segment large, strongly, sinuate; terminal segment short, slender; antennae reaching to beyond middle of forewing, flagellum with basal notch in male; forewing length 6.8–8.8 mm; narrowly subrectangular, slightly widening distally and curved part protrudes anteriorly in female; chorda from halfway between R 1 and R 2 to between R 4 and R 5; M-stem usually appears as weak trace in membrane, extends to M 3; CuA 1 curved and distally approximated to M 3; CuP faintly visible near boundary; costa strigulae gray, confluent with wing pattern, indistinct; wing gray pattern blended with strigulae extends from costa to dursum; speculum resembles wing pattern, difficult to distinguish, speculum ground color dark brown, inner and outer line of speculum color silver, line of speculum extended to tornus, with 3 to 5 small black inner spots but indistinct; hindwing dark brown, with thin and long hairs on anal margin, and short hairs on termen; Rs and M 1 closely approximated at base; base of M 2 strongly bent towards M 3; M 3 and CuA 1 basal stalked and apical separated, sometimes combined into one stalked; CuP halfway between CuA 2 and 1A+2A.
Pregenital abdomen. Membranous pockets in female between S6 and S7, small, half circle shaped; in male hind-margin of S8 strongly bilobed, T8 with inverted T-shaped sclerotisation.
Male genitalia. Uncus absent; socii tapering apically, thick waisted, bent inward apex; tegumen robust, with strong shoulders; tuba analis membranous; gnathos two weak, lateral bands; aedeagus 1/2 of length from tegumen to vinculum, bends lightly, deciduous cornuti; anellus ring, about twice as wide as aedeagus; caulis long and wide, inverted trapezoid; juxta triangular; vinculum small, valva long, tapering to neck; basal opening 1/3 width of valva, round rectangular shaped; sacculus hairy; cucullus large hump-shaped, setae moderately dense; one pollex on edge.
Female genitalia. Papillae anales with long and short hairs; sterigma fused with hindmargin of S7, sclerotised vestige around lamella antevaginalis; ostium small, behind lamella antevaginalis and not visible; lamella antevaginalis towering, slightly raised at both ends; posterior portion of ductus bursae sclerotised to conspicuously narrow; colliculum about half as long as ductus bursae, sclerotised except at origin of ductus seminalis; ductus seminalis arising at posterior end of colliculum; corpus bursae roundish, minutely spinulose with weakly sclerotised area in neck; signa pair, subtriangular, equal size.
Host plant. Unknown.
Distribution. Korea (GG, GW).
Remarks. The appearance of the adults of this species are very similar to that of S. eremitana in appearance, making differentiation challenging. However, in the case of male genitalia, the socii is thicker, and the cucullus is more swollen. Additionally, in the case of female genitalia, the median of the lamella antevaginalis is not concave.
Etymology. The specific name comes from the Latin prefix lati - (broad) and cucullus, in reference to the broad cucullus in the male genitalia.
description: Published as part of Choi, Seokhoon, Kim, Jeong-Nam, Bayarsaikhan, Ulziijargal, Jang, Chang Moon, Kim, Hanul, Nasu, Yoshitsugu & Bae, Yang-Seop, 2024, Taxonomic study of the genus Spilonota Stephens (Lepidoptera: Tortricidae: Olethreutinae: Eucosmini) with descriptions of two new species in Korea, pp. 357-370 in Zootaxa 5418 (4) on pages 367-369, DOI: 10.11646/zootaxa.5418.4.4, http://zenodo.org/record/10730648