Mataeomera yoshimotoi Sohn & Eda, 2013

Sohn, Jae-Cheon & Eda, Keitaro, 2013, A new species of Mataeomera, formerly misidentified as M. obliquisigna (Hampson, 1894) from Japan (Lepidoptera, Erebidae, Boletobiinae), Zootaxa 3745 (4), pp. 496-500 : 497-499

Mataeomera yoshimotoi Sohn & Eda n. sp.

[ Figs 3, 4 , 7–9 ]

Ozarba (?) obliquisigna: Wileman, 1912: 230 . Misidentification.

Paragona obliquisigna: Wileman, 1912: 395 . Misidentification.

Catoblemma obliquisigna: Sugi, 1959: 138 . Misidentification.

Mataeomera obliquisigna: Yoshimoto, 1999 : figs. 11, 20. Misidentification.

Type material. Holotype —male, Bushi , Iruma, Saitama Prefecture, Japan, 21 July 1980 (H Inoue), genitalia slide no. KE-351, NMNS . Paratypes (3♂, 3♀)— 1♀, same locality as holotype, 20 July 1978 (H Inoue), genitalia slide no. KE- 352, NMNS ; 1♂, Arikuji-onsen , 50m (Kii-Nagashima), Mie Prefecture, Japan, 31July–1 August 1980 (H Yoshimoto), genitalia slide no. 7396, HNHM ; 1♂, Shiroyama Oohito , Izu, Shizuoka Prefecture, Japan, 4 August 1993 (Y Kishida), NMNS ; 1♀, Mt. Inunaki , Osaka Prefecture, Honshu, Japan, 27 August 2003 (JC Sohn), at black light, CNU ; 1♂, Ukaretoge , Shirakawa-cho, Gifu Prefecture, Japan, 27 July 2006 (A Miyano), NMNS ; 1♀, Ikeno-daira , Ootaga-cho, Toyota, Aichi Prefecture, Japan, 21 August 2009 (A Miyano), NMNS .

Diagnosis. This new species has been confused with Mataeomera obliquisigna . Their differences are given in Table 1. It is also similar to Mataeomera esbiahni Sohn et Ronkay, 2001 , from South Korea, but differs from the latter in the forewing patterns, viz. with narrower submarginal shade; larger discal spot; more sharply zigzagged postmedian line; broader brown fascia between median and postmedian line in some variations ( Fig. 3 ); in male genitalia, by the presence of three digitate processes in the apex of the valvae and two teeth in the distal area of phallus; in female genitalia, with a deep postmedial cleavage on sternite VIII.

Description. Head—Scales of vertex dark grayish brown with brownish white or pale orange tip; frons dark brown. Antennae filiform in both sexes, 1/2 as long as forewing; scape brownish white; flagellomeres dark brown dorsally, brownish white laterally, naked ventrally. Labial palpi slightly ascending; 1 st segment 1/5 as long as 2 nd, dark brown, speckled with pale gray; 2 nd segment dark brown, densely speckled with pale gray dorsally, with triangular scale tuft broadened distally; 3 rd segment as long as 1 st, dark brown. Thorax—Patagia dark brown, brownish white posteromarginally, speckled with brownish white in basal half; tegula and mesonotum pale grayish brown, speckled with brownish white. Forelegs and mid legs dark brown dorsally, pale gray, speckled with dark grayish brown ventrally; tarsomeres with pale gray ring distally. Hindlegs dark brown, speckled with pale gray; tibia with broad, oblique dark brown band laterally; tarsomeres with pale gray ring distally. Forewing length 12–16 mm (n=42), subtriangular, pale brownish gray; subbasal line only in costal area, broadly dark brown; antemedian line dark brown, sinuous; median and postmedian line dark brown, zigzagged, interspace of both lines dark brownish gray or purplish gray; discal spot dark brown or black; submarginal line broadly dark grayish brown, zigzagged, intermittent; adterminal dashes dark brown; terminal line pale grayish brown; fringe alternate dark brown and dark brownish gray bars. Hindwings pale brownish gray in basal 2/5; median and postmedian lines dark brown, zigzagged, interspace of both lines dark brownish gray or dark gray; discal spot dark brown or black; two dark brown, intermittent lines in submarginal area; adterminal line and fringe alternate dark brown and dark brownish gray bars; terminal line brownish white. Abdomen dark grayish brown, speckled with pale grayish brown dorsally, pale gray ventrally. Male genitalia ( Figs. 7–8 )—Uncus slender, falcate, pointed apically, as long as tegumen. Tegumen triangular. Valva elongate, slightly broadened to base; semi-elliptical lobes over the middle of costa; harpe with subtriangular basal protrusion, distal process broadly clubbed apically; apical processes digitate, membranous; saccular process spiniform, as long as apical process. Phallus almost straight, slightly broadened distally at ductus ejaculatorius, with two teeth near the apical end; cornutus absent. Female genitalia ( Fig. 9 )—Papillae anales inverted-subtrapezoidal, setose; apophyses posteriores slender, two times longer than papillae anales. Abdominal segment VIII as a sclerotized, complete ring, with a rectangular expansion between apophyses anteriores; anteroventral margin sinuate, convex medially; apophyses anteriores short. Ductus bursae as long as corpus bursae, with an incomplete scletotized ring medially, interior wall sclerotized in anterior 2/5; antrum 1/2 of the length of ductus bursae, flattened, slightly broadened to ostium bursae; medial cleavage running through 5/6 of antrum length, broadened to oval anteriorly, two lobes approximated in posterior 2/3, convex posteromarginally; a processes arising from medial cleavage of antrum, slightly broadened to base, bifid apically. Corpus bursae oval, with minute winkles; cervix bursae 2/ 5 as long as ductus bursae; signum as an inverted-subtriangular, spinulate zone.

Distribution. Japan (Honshu, Shikoku, Kyushu, Tsushima Is., Yakushima Is.). Literature localities include Yokohama; Yoshino, Yamato [= Nara Pref.] ( Wileman, 1912).

Hosts. Probably lichens ( Sugi, 1959; Yamamoto, 1965; Yamamoto & Sugi, 1987).

Etymology. Dedicated to Hiroshi Yoshimoto whose previous work inspired this paper.

Figures

FIGURES 1–4. Adults of Mataeomera. 1–2. M. obliquisigna, holotype and specimen labels; 3. M. yoshimotoi n. sp., holotype, male; 4. M. yoshimotoi n. sp., paratype, male variation with broad brown fasciae.

FIGURES 5–9. Genitalia of Mataeomera. 5. Male genital capsule of M. obliquisigna (genitalia slide: BM Noctuidae 19386); 6. phallus of M. obliquisigna (ditto); 7. male genital capsule of M. yoshimotoi n. sp. (genitalia slide: KE-351); 8. phallus of M. yoshimotoi n. sp. (ditto); 9. female genitalia of M. yoshimotoi n. sp. (genitalia slide: KE-352).