Meganola gigas ( Butler, 1884 )

Cha, Yeong-Bin, Oh, Sung-Hwan, Bayarsaikhan, Ulziijargal, Na, Sol-Moon, Lee, Dong-June, Ko, Jae-Ho, Lee, Tak-Gi, Kim, Hyeong-Kyu, Jang, Chang-Moon & Bae, Yang-Seop, 2019, Review of the genus Meganola Dyar, 1898 (Lepidoptera: Nolidae, Nolinae) from Korea, with the description of a new species, Zootaxa 4686 (2), pp. 215-240 : 217-219

Meganola gigas ( Butler, 1884)

( Figs 1 , 13 , 24 )

Nola gigas Butler, 1884: 274 . TL: Japan (Hokkaido).

Nola maculata Staudinger, 1887: 180 .

Roeselia nigromaculata Nagano, 1918: 4 I4.

Rhynchopalpus gigas: Tshistjakov, 2008: 12–13 .

Meganola gigas: Inoue, 1982: 665 ; Oh, 1991: 87–88 [unpublished]; Sasaki, 2011: 178.

Diagnosis. This species is similar to Meganola subgigas Inoue (1982) but can be distinguished from it by the following characters: forewing ground color bright gray; postmedial line at medial patch; male genitalia with tegumen not tumescent at basal area; valva dorsal line rather at basal area excurved; harpe minute dentate, thumb-shaped; aedeagus medium length, strongly sclerotized, rather dentate; female genitalia with ostium bursae rather sclerotized rectangular cheliform; ductus bursae half-length of ostium bursae and two signa present in corpus bursae.

Redescription. Adult ( Figs 1a, b ). Wingspan 25–26 mm in male, 27–30 mm in female. Head and thorax gray in both sexes. Ground color of forewing gray in male, darker in female, with dark brown basal patch of costal margin, hemicircular medial patch on costal margin; dark brown antemedial line waved, postmedial lines waved; brown subterminal line waved; cilia gray, mixed with white scales. Ground color of hindwing dark brown in male, darker in female; cilia dark brown in both sexes. Male genitalia ( Fig 13 ). Pseudouncus tapering, weakly covered with setae in dorsal side. Tegumen triangular, tumescent from below. Valva elongated rectangular, broadly to the apex, weakly curved inwardly, with angled apex; costal margin of valva sclerotized. Harpe slender, tapering, dentate distally, thumb-shaped, with rounded apex. Saccus U-shaped, with pointed apex. Aedeagus strongly sclerotized, rather dentate apex, without cornutus. Female genitalia ( Fig 24 ). Apophyses posteriors twice length than anteriores. Ostium bursae rectangular cheliform, strongly sclerotized. Ductus bursae membranous, half-length of ostium bursae. Corpus bursae ovoid, with two triangular signa.

Material examined. (3♂, 2♀) 1♀, GG , Gwangneung , 18. VIII. 1985 (G.J. Weon), Gen. Slide No. SH-64 ; 1♂, GW , Temp. Baekdam-sa , Inje, 9. VII. 2003 (Bae et al.), Gen. Slide No. INU-9121 ; 1♀, GW , Korea National D.M.Z. Arbotoretum, Yanggu , 24. VII. 2012 (S.Y. Park and J.S. Lim), Gen. Slide No. INU-9123 ; 1♂, GW , Mal- geun-mul pension, Mt. Taegi-san , Heongseung (37˚35′44.4″N 128˚14′37.6″E), 9. VIII. 2018 (Y.S. Bae, D.J. Lee, T.G. Lee, Y.B. Cha & J.B. Heppner), Gen. Slide No. INU-9176 ; 1♂, GW , Mt. Taegi-san , Heongseung (37˚35′56.3″N 128˚14′53.0″E), 10. VIII. 2018 (Y.S. Bae, D.J. Lee, T.G. Lee, Y.B. Cha & J.B. Heppner), Gen. Slide No. INU- 9177 .

Distribution. Korea (GG, GW), Japan, China (Northeast), Russia (Far East).

Hostplants. Russia: Juglans mandshurica (Juglandaceae) , ( Tshistjakov, 2008). Japan: Juglans sinensis (Juglandaceae) , ( Inoue, 1982).

Remarks. This species was first recorded from Korea by Kononenko and Han (2007), based on Dr. Oh’s doctoral thesis.

Figures

FIGURES 1–4. Adults of genus Meganola spp. 1a. Meganola gigas, male (INU-9121). 1b. ditto, female (INU-9122). 2. Meganola protogigas, male (photos by Choi 2006)). 3a. Meganola subgigas, male (INU-9040). 3b. ditto, female (INU-9122). 4a. Meganola triangulalis, male (photos by Choi (2006)). 4b. ditto, female (SH-67). (Scale bar = 1cm)

FIGURES 13–15. Male genitalia of Meganola spp. (a: male genitalia, b: aedeagus, c: enlarged uncus, d: enlarged harpe). 13. Meganola gigas (INU-9121). 14. Meganola protogigas (photos by Choi (2006)). 15. Meganola subgigas (INU-9122). (Scale bar = 1mm)

FIGURES 24–25. Female genitalia of Meganola spp. 24. Meganola gigas (INU-9123). 25. Meganola protogigas (photos by Choi (2006)). (Scale bar = 1mm)