Nycteola dufayi Sugi, 1982

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 dufayi Sugi, 1982

Nycteola dufayi Sugi in Inoue, 1982 - Inoue 1982: 794. Type locality: Japan: Honshu: Tokio [Tokyo]: Takaosan. Holotype: male, in coll. NIAES.

Nycteola dufayi : Poole, 1989 - Poole 1989:704; Sasaki and Kishida, 2011 - Sasaki and Kishida 2011: 183.

Materials

Type status: Other material. Occurrence: catalogNumber: INU-11971, -11972 ; recordedBy: Heo W.H.; individualCount: 2; sex: 2 males; occurrenceID: 09064A2D-F535-5108-844E-B823FDA35776; Taxon : class: Insecta ; order: Lepidoptera ; family: Nolidae ; genus: Nycteola ; specificEpithet: dufayi; taxonRank: species; Location : country: Korea; stateProvince: JN; locality: Mt. Wanguisan , Suncheon-si ; Identification : identifiedBy: Y.B. Cha; dateIdentified: 2022; Event : eventDate: 02-08-2016; eventRemarks: Host plant: Quercus serrata, emerged 13. VIII. 2016; Record Level : rightsHolder: Un-Hong Heo ; collectionCode: Insects; basisOfRecord: PreservedSpecimen Type status: Other material. Occurrence: catalogNumber: INU-11973 ; recordedBy: Heo W.H.; individualCount: 1; sex: 1 female; lifeStage: adult; occurrenceID: E0D66A07-C0CB-5C62-8EAA-5AF871C62F27; Taxon : class: Insecta ; order: Lepidoptera ; family: Nolidae ; genus: Nycteola ; specificEpithet: dufayi; taxonRank: species; Location : country: Korea; stateProvince: JN; locality: Mt. Wanguisan , Suncheon-si ; Identification : identifiedBy: Y.B. Cha; dateIdentified: 2022; Event : eventDate: 02-08-2016; eventRemarks: Host plant: Quercus serrata, emerged 11. VIII. 2016; Record Level : rightsHolder: Un-Hong Heo ; collectionCode: Insects; basisOfRecord: PreservedSpecimen

Description

Adults. (Fig. 4 c, d) Length of forewing 9-10 mm in both sexes, wingspan 19-21 mm. Antenna filiform in both sexes. Head and thorax brownish-grey, with a black strigular on tegula. Ground colour of forewing brownish-grey; basal and sub-basal lines indistinct fuscous grey; antemedial line irregulary dentate; medial area bright grey with a small, dark grey discal dot and a large black dot near dorsal margin; medial line wavy, dentate; postmedial line dotted, wavy; teminal margin triangular dotted on each vein. Ground colour of hindwing fuscous grey. Abdomen fuscous grey.

Male genitalia. (Fig. 5 b, d, f) Uncus sclerotised, rounded end, with subscaphium. Tegumen narrow; peniculus roundly expanded. Transtilla weakly sclerotised. Valva narrow; costal margin bent; apex lobe with hairy; subapical lobe with series of distinct spines; harpe-like process towards apex, apically clothed with long, stout setae; ventro-distal lobe complex and convolute. Sacculus sclerotised. Saccular shield elongated spatulate, somewhat axe-head-shaped; partly fused to aedeagus. Vinculum U-shaped. Aedeagus long, slender, slightly bent with spinule vesica; carina process porrect. Eighth tergite costally horizontal wing-shaped plate with two long clavate processes anteriorly, postero-laterally weakly sclerotised; 8th sternite anteriorly angled H-shaped.

Female genitalia. (Fig. 3 d) Apophyses anteriores somewhat shorter than apophyses posterior. Ostium bursae membranous, narrow. Ductus bursae sclerotised posteriorly and membranous anteriorly. Corpus bursae pyriform. Appendix bursae absent.

Diagnosis

This species can be distinguished from other congeners by its a small reddish discal dot with a large black dot near dorsal margin on the forewing in the adult. In the male genitalia, only dufay have distinctive aedeagus with spinule vesica. In the female genitalia, its long slender ductus bursae can identify it from others.

Distribution

Korea (new record), Japan ( Sasaki and Kishida 2011).

Ecology

Host plant: Quercus glauca, Q. gilva, Q. salicina, Castanopsis sieboldii sieboldii ( Fagaceae ) ( Jinbo et al. 2019). Quercus serrata ( Fagaceae ) (new record).

Notes

This species has been only recorded from Japan, but newly recorded from the continent herein with a new host plant. Here, we show the brief biology of this species in Fig. 6.