Nycteola degenerana ( Huebner , 1799)

Cha, Yeong-Bin, Heo, Un-Hong, Bayarsaikhan, Ulziijargal, Kim, Sora & Bae, Yang-Seop, 2023, Taxonomic review of the genus Nycteola Huebner (Lepidoptera, Nolidae) from Korea including potential invasive pests, Biodiversity Data Journal 11, pp. 114878-114878 : 114878

Nycteola degenerana ( Huebner, 1799)

Tortrix degenerana Hübner, 1799 - Hübner 1799: pl.2, fig. 8. Type locality: Europe.

Nycteola degenerana hesperica Dufay, 1958 - Dufay 1958: 112. Type locality: [France]: Pyrenees: St.-Pierra d'Irrube.

Nycteola degenerana eurasiatica Dufay, 1961 - Dufay 1961: 434. Type locality: [Russia]: Moscow.

Nycteola degenerana eurasiatica : Ronkay and Park, 1993 - Ronkay and Park (1993): 65.

Nycteola degenerana : Poole (1989): 704; Kononenko et al. (1998): 140; Kononenko and Han (2007): 72; Paek et al. 2010: 304; Sasaki and Kishida (2011): 183; Beljaev et al. 2016: 404; Kim et al. (2016): 141; National Institute of Biological Resources 2019: 605; Park and Lee 2021: 615.

Materials

Type status: Other material. Occurrence: catalogNumber: INU-11609 ; recordedBy: Bae, Paek & Lee; individualCount: 1; sex: 1 male; lifeStage: adult; occurrenceID: 67A18872-ECA7-58D9-B624-A2F8866A5EE0; Taxon : class: Insecta ; order: Lepidoptera ; family: Nolidae ; genus: Nycteola ; specificEpithet: degenerana; taxonRank: species; Location : country: Korea; stateProvince: GW; locality: Mt. Kyebang , Hongcheon ; Identification : identifiedBy: Y.B. Cha; dateIdentified: 2022; Event : eventDate: 26-05-1996; Record Level : language: en; collectionCode: Insects; basisOfRecord: PreservedSpecimen Type status: Other material. Occurrence: catalogNumber: INU-11844 ; recordedBy: Park et al.; individualCount: 1; sex: 1 female; lifeStage: adult; occurrenceID: 48D13D20-EBB4-5E69-97E3-3D9C012EF9D8; Taxon: class: Insecta; order: Lepidoptera; family: Nolidae; genus: Nycteola; specificEpithet: degenerana; taxonRank: species; Location: country: Korea; stateProvince: GW; locality: Gangwon National Univ., Chuncheon ; Identification: identifiedBy: Y.B. Cha; dateIdentified: 2022; Event: eventDate: 26-04-2003; Record Level: language: en; collectionCode: Insect; basisOfRecord: PreservedSpecimen

Description

Adults. (Fig. 4 a, b) Length of forewing 11-12 mm in both sexes, wingspan 25 mm. Antenna filiform in both sexes. Head and thorax greenish-grey. Ground colour of forewing greenish-grey; basal band angled, fuscous; sub-basal line parallel to basal line; antemedial line indistinct; medial line and postmedial line doubled, wavy; subterminal line undulated. Ground colour of hindwing pale grey, darkening towards termen. Abdomen pale grey.

Male genitalia. (Fig. 5 a, c, e) Uncus sclerotised, triangular, rounded end, with subscaphium. Tegumen narrow; peniculus round trapezoidally expanded. Transtilla weakly sclerotised. Valva costal margin bent with a short spinous process; apex lobe hairy; harpe-like process towards apex, apically clothed with long hair; ventro-distal lobe complex and convolute. Sacculus sclerotised. Saccular shield elongated spatulate, axe-head-shaped; partly fused to aedeagus. Vinculum rather elongated U-shaped. Aedeagus long, slender, broadened in apical 1/3, carina process snail-shell-shaped. Eighth tergite costally diagonal wing-shaped plate with two short clavate processes anteriorly, with postero-laterally weakly sclerotized; 8th sternite anteriorly curved H-shaped.

Female genitalia. (Fig. 3 c) Apophyses anteriores somewhat shorter than apophyses posterior. Ostium bursae membranous. Ductus bursae short, sclerotised, stout, with cervix bursae. Corpus bursae somewhat peanut-shaped. Appendix bursae absent.

Diagnosis

This species can be distinguished from other congeners by its fuscous green forewing colour in the adult. In the male genitalia, only Nycteola degenerana have aedeagus with a conspicuous snail-shell-shaped carina precess. In the female genitalia, its well sclerotised ductus bursae with somewhat peanut-shaped corpus bursae can identify it from others.

Distribution

Korea, Spain, France, Switzerland, Italy, Slovenia, Austria, Czech, Germany, Poland, Slovakia, Rumania, Ukraine, Belarus, Lithuania, Latvia, Estonia, Norway, Sweden, Finland, Russia, Central Asia, northern China, Mongolia ( Beljaev et al. 2016, Joshi et al. 2021).

Ecology

Hostplant: Salix caprea ( Salicaceae ) ( Fibiger et al. 2009).

Notes

This species was firstly recorded from the Korean Peninsula by Ronkay and Park (1993) from North Korea as Nycteola degenerana eurasiatica Dufay and South Korea by Kononenko and Han (2007). According to Beljaev et al. (2016), the species is distributed in India; however, it was not listed in the study conducted by Joshi et al. (2021). Therefore, we do not accept the distribution of the species in India.