Meganola albula, : Inoue, 1982

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 : 221

Meganola albula ([Denis & Schiffermüller], 1775)

( Figs 5 , 17 , 28 )

Noctua albula [Denis & Schiffermüller], 1775, 69. TL: Austria (Vienna region).

Pyralis albulalis Hübner, 1796: 6 . pl. 3, Fig 14 . An unjustified emendation of Noctua albula .

Nola albulalis: Leech, 1888: 608 .

Roeselia formosana Wileman & West, 1928: 276 .

Nola albula var. nivalis Caradja, 1934: 189 .

Roeselia albula ssp. pacifica Inoue, 1958: 234–235 .

Rhynchopalpus albula: Tshistjakov, 2008: 11 .

Meganola albula: Inoue, 1982: 667 ; Oh, 1991: 83–85 [unpublished]; Sasaki, 2011: 180.

Diagnosis. This species is similar to M. mediofascia ( Inoue, 1958) but can be distinguished from it by the following characters: forewing ground color white; median band dark brown to bright brown, not angled; male genitalia with pseudouncus tapering, without subscaphium; harpe basally triangular, long finger-shaped, with dentate dosally; saccus almost same length as tegumen; aedeagus slender, slightly curved, with a cornutus; female genitalia with ostium bursae slender, sclerotized; ductus bursae half-length of corpus bursae, membranous and corpus bursae ovoid, with two triangular signa, posterior signum two-thirds of anterior.

Redescription. Adult ( Figs 5a, b ). Wingspan 16–20 mm in both sexes. Head and thorax white in both sexes. Ground color of forewing in both sexes white, with weakly curved dark brown median band; white curved subterminal line; cilia white, mixed with brown-gray scales. Ground color of hindwing bright brown; cilia white in both sexes. Male genitalia ( Fig 17 ). Pseudouncus broad and long, tapering, weakly covered with setae. Tegumen triangular. Valva broadly to the apex; costal margin of valva sclerotized, slightly curved inwardly. Harpe basally triangular, long finger-shaped, with dentate dosally. Saccus almost same length as tegumen and V-shaped. Aedeagus slender, with a cornutus. Female genitalia ( Fig 28 ). Apophyses posteriores half times as long as anteriores. Ostium bursae tubular, sclerotized. Ductus bursae membranous, half-length of corpus bursae. Corpus bursae ovoid, with two triangular signa, posterior signum, two-thirds of anterior.

Material examined. (6♂, 4♀) 1♂, GW , Mt. Jaean , Hwacheon, 13. VI . 2000 (Y.S. Bae, M.K. Paek & Y.G. Kim); 1♀, GW , Mt. Odae-san , 2. VI . 2001 (Y.S. Bae, Y.G. Kim & S. Kim), Gen. Slide No. INU-9125; 2♂, JB , Byunsan- bando, 3. VI . 2003 ( Bae et al.), Gen. Slide No. INU-9126; 1♀, GN , Mt. Jiri , 15. VII. 1976 (Y.Y. Ha) ; 2♂, JN , Is. Heuksan-do , 26. V. 2017 (Y.D. Ju, S.M. Na, D.J. Lee & J.W. Kim) ; 1♀, GW , Moonsan , Youngweol, 7. VI . 1996 (K. T. Park); [KNA] 1♂, JJ , Mt. Deungdae-san , Is. Chuja-do (33˚56′56.1″N 126˚19′51.5″E), 29. VIII. 2013 (Park, Lim, Oh & Go), sample No. KNAE 412190 ; 1♀, JJ , Is. Sangchuja-do, Chuja-Myeon (33˚57′55.2″N 126˚17′08.6″E), 30. VIII. 2013 (Park, Lim, Oh & Go), sample No. KNAE 411901 .

Distribution. Korea (GN, GW, JB, JJ, JN), Japan, China (Northeast), Russia (Far East), Europe, Turkey, Israel.

Hostplants. Russia: genus Rubus spp., Fragaria spp., Potentilla spp., ( Rosaceae ); genus Vaccinium spp., ( Ericaceae ); genus Lotus spp., Trifolium spp., ( Fabaceae ); genus Mentha spp. ( Lamiaceae ), ( Tshistjakov, 2008). Japan: Perilla frutescens var. crispa (Lamiaceae) , ( Sasaki et al. 2011).

Remarks. This species was first recorded from Korea by Zoological Society of Korea (1968).

Figures

FIGURES 5–8. Adults of genus Meganola spp. 5a. Meganola albula, male (INU-9126). 5b. ditto, female (INU-9125). 6a. Meganola costalis, male (INU-9124). 6b. ditto, female (INU-9154). 7. Meganola shimekii, female (INU-9018). 8a. M. mikabo, male (INU-9100). 8b. ditto, female (INU-9098). (Scale bar = 1cm)

FIGURES 16–18. Male genitalia of Meganola spp. (a: male genitalia, b: aedeagus, c: enlarged uncus, d: enlarged harpe). 16. Meganola triangulalis (photos by Choi (2006)). 17. Meganola albula (INU-9126). 18. Meganola costalis (INU-9124). (Scale bar = 1mm)

FIGURES 28–29. Female genitalia of Meganola spp. 28. Meganola albula (INU-9125). 29. Meganola costalis (SH-95). (Scale bar = 1mm)

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)