Litobrenthia japonica ( Issiki, 1930 )

Sohn, Jae-Cheon, 2022, Three species of Choreutidae (Lepidoptera) new to Korea with the first record of Brenthiinae for the country, Journal of Species Research 11 (3), pp. 202-207 : 205-206

Litobrenthia japonica ( Issiki, 1930)

ậḵḍḝệ날ffl나® ( Figs. 1A , 2A- B )

Brenthia japonica Issiki, 1930: 424 . Type locality: Japan, Wakayama Pref., Hasimoto .

Choreutis kiiensis Matsumura, 1931: 1078 . Type locality: Japan.

Litobrenthia japonica ; Diakonoff, 1978a: 29.

Description. Head - Vertex and frons fuscous, with purple luster. Antenna 1/2 as long as forewing; scape fuscous dorsally, white ventrally; flagellum fuscous, intermixed with white scales on basal 12 flegellomeres. Labial palpus with 1 st palpomere pale fuscous; 2 nd palpomere white, with fuscous ring at distal 1/3; 3 rd palpomere white, with fuscous ring distally and basally. Thorax - Patagium, tegula and mesonotum fuscous. Forewing length 3.5-4 mm, fuscous; subbasal fascia broadly suffused, white; median fascia white, intermixed with fuscous scales; black terminal fascia divided into three large blotches, peppered with purplish-metallic scales subterminally; cilia pale fuscous. Hindwing fuscous, with white-suffused patch at middle and white bar at middle of postmedian area; a short, purplish-blue, metallic streak in apical area; cilia fuscous. Male genitalia ( Fig. 2A ) - Tegumen semi-elliptical. Tuba analis well-developed, with linguiform sclerotization. Transtilla with small, sparsely-setose, papiliform process laterally. Valva semi-oval, densely-setose. Saccus large, digitiform, narrowly-round apically. Phallus ( Fig. 2 Aa) slightly curved at middle; cornutal zone spinulate, 1/2 as long as phallus. Female genitalia ( Fig. 2B ) - Papillae anales oblique, densely-setose, Ductus bursae enlarged to corpus bursae; antrum cup-shaped, 1/10 as long as ductus bursae; corpus bursae obovate, as long as ductus bursae; signum near ductus bursae quadrate, scobinate; signum at posterior 1/3 large, transversely elongate, convex at middle on both margins.

Material examined. [ Korea] 1♂, Jeollanam Prov., Wando-gun, Is. Bogildo, Bogil-myeon, Buhwang-ri (34°07 ʹ 39.7 ʺ N 126°31 ʹ 13.3 ʺ E), 31 August 2017, leg. J.-C. Sohn, genitalia slide no. SJC-1308, GJUE; 1$, Jeollanam Prov., Wando-gun, Is. Wando, Wando-eup, Jeongdo-ri (34°17 ʹ 53.1 ʺ N 126°42 ʹ 46.8 ʺ E), 24 August 2017, leg. J.-C. Sohn, genitalia slide no. SJC-1326, NIBR. [ Japan] 2♂, 2$, Honshu , Aichi Pref., Mt. Sanage-yama, 15 May 1980 (larvae collected on Quercus glauca ), 29-31 May and 9 June 1980 (adults emerged), genitalia slide no. SJC-1313 ($), 1205 (♂), NMNS .

Distribution. Korea (new record), Japan.

Host plants. Fagaceae - Castanea crenata Siebold & Zucc. , Lithocarpus edulis (Makino) Nakai , Quercus acuta Thunb. , Q. acutissima Carruth. , Q. gilva Blume , Q. glauca Thunb. , Q. myrsinifolia Blume , Q. phillyreoides A. Gray ( Arita, 1987; 2013).

Remarks. Adults of this species exhibit display behavior in the similar way to Brenthia spp. , described in Aiello and Becker (2004). It is known that such behavior is involved in jumping spider mimicry ( Rota and Wagner, 2006).

Figures

Fig. 1. Habitus (A-B) and life-cycle (C-F) of Choreutidae. A. Litobrenthia japonica (Issiki, 1930), male. B-F. Choreutis japonica (Zeller, 1877): B. female habitus, C. young larva on Ficus erecta, D. mature larva, E. larval shelter, F. emerged adult. Scale bars in A and B=3 mm.

Fig. 2. Genitalia of Choreutidae.A. Litobrenthia japonica(Issiki, 1930), male(a=phallus). B. Litobrenthia japonica(Issiki, 1930), female. C. Choreutis japonica (Zeller, 1877), female. D. Choreutis atrosignata (Christoph, 1888), female.