Promalactis inokoi Tomura & Komatsu, 2021

Tomura, Shunsuke, Komatsu, Toshitami, Yagi, Sadahisa & Hirowatari, Toshiya, 2021, Two new species of Promalactis and one newly recorded from Japan (Lepidoptera, Oecophoridae), Zootaxa 4970 (1), pp. 151-160 : 152-156

Promalactis inokoi Tomura & Komatsu sp. nov.

(Japanese name: Inoko-beni-maruha-kibaga)

( Figs 1, 2 , 7 , 10 , 13 )

Promalactis sp. : Komatsu, 2017: 68.

Type material. JAPAN, Hokkaido: Holotype ♂, Horoman Samani / Hokkaido / 27.VII.2002 / H. Kogi leg., No. ST 213 ( ELKU) . Paratypes: 2♀, the same date and locality as holotype, H. Kogi leg., No. ST 044, ST045 ( ELKU) ; 1♀, Wakazono, Niikappu , Hokkaido, 25.VII.2008, H. Kogi leg., No. ST 214 ( ELKU) ; 3♀, Kosanai-rindo, Assabucho , Hokkaido, 31.VII.2003, T. Komatsu leg., No. ST216, No. ST217, No. ST218 ( ELKU) ; 1♀, Katsuranosawa, Ishikari , Hokkaido, 1.VIII.2008, H. Kogi leg., No. ST 215 ( ELKU) . Honshu : 1♂, Mizusawa, Hata-machi , Nagano, 23.VII.1995, N. Hirano leg., No. ST 099 ( ELKU) ; 1♂, Kojiro, Tenryu-mura Nagano, 31.VII.2010, N. Hirano leg., No. ST 223 ( ELKU) ; 1♂, the same locality as former, 5.VII.2008, N. Hirano leg., No. ST224 ( ELKU) ; 1♀, Onjinji, Yamanaka-cho, Toyota-shi , Aichi, 26.VI.2012, T. Mano leg., No. ST 172 ( ELKU) ; 1♀, Hudodani, Miyama-cho , Mie, 30.VI.2001, T. Mano leg., No., ST 176 ( ELKU) ; 1♂, Yamanouchi –cho, Seikanji, Higashiyama-ku , Kyotoshi , Kyoto, 27.VI.2015, H. Shimizu leg., No. ST 164 ( ELKU) ; 1♀, Mt. Aokai, Toyono-cho , Osaka, 7.VII.1999, T. Saito leg., No. ST 047 ( OPU) ; 1♂, Minoo , Osaka, 13.VII.1979, T. Saito leg., No. ST 169 ( OPU) ; 1♀, Mt. Izumikatsuragi, Kishiwada-shi , Osaka, 21.VII.2001, T. Saito leg., No. ST 175 ( OPU) ; 1♀, Kitamata, Kawakamimura , Nara, 16.VI.1992, T. Ueda leg., No. ST 177 ( OPU) ; 1♂, Setagura, Tottori-shi , Tottori (N35.4744, E134.1165), 11.VII.2017, Y. Matsui leg., No. ST 168 ( ELKU) . Shikoku : 1♂, Misato-son , Tokushima, 15.VI.1991, T. Hirowatari et al. leg., No. ST 049 ( OPU) ; 1♀, Omogokei , Ehime, 21.VI.1964, S. Moriuti leg., No. ST 178 ( OPU) . Kyushu : 1♀, Biological Laboratory, Mt. Hiko , Fukuoka, 670 m, 2.VII.2016, S. Yagi leg., No. ST 046 ( ELKU) ; 1♀, same locality, 27.VII.2015, S. Yagi leg., No. SY185 ( ELKU) ; 1♂, Mt. Hiko , Fukuoka, 17.VII.1975, Y. Arita leg., No. ST048 ( NSMT) . Tsushima-Islands : 1♀, Syushi, Kamitsushima, Tsushima-Island , Nagasaki, 6.VIII.1983, T. Saito leg., No. ST 165 ( OPU) .

Diagnosis. This species has the following characters: in the forewing, the antemedial fascia, the costal and the apical patches are divided; in the male genitalia, the juxta has asymmetrically bifurcate lobes and the cornutus is a short spine and not bifurcate in the phallus; in the female genitalia, the lamella postvaginalis is circular, the antrum is straight with a lateral process posteriorly and the signum is absent. This combination of characters is shared with P. zhengi Wang & Li, 2004 but the latter can be distinguished by the bifurcate right lobe of the juxta which is slightly longer than the left lobe and the saccus is blunt.

Description. Adult ( Figs 1, 2 , 7a ). Forewing length 5.4 mm in holotype, males 4.2‒5.7 mm (n = 9) and females 4.0‒ 5.4 mm in paratypes (n = 16). Head: vertex brown, mixed with white scales along anterior margin and lateral margins above eyes; frons ocherous brown. Antennal scape white tinged with dark brown scales dorsally and pale yellow ventrally; flagellomere white basally alternated with dark brown apically. Labial palpus: second palpomere dark brown except inner surface ocherous brown; third palpomere dark brown, but white basally and apically. Mesonotum and tegula orange yellow. Forewing brownish yellow with 12 white markings edged with dark brown scales: sub-basal fascia near base, divided into a band and a small patch, extending to but not reaching costal margin; antemedial fascia from 1/4 of posterior margin, oblique toward apex, extending to but not reaching costal margin; medial fascia from 1/2 of posterior margin, oblique toward apex; postmedial patch indistinct at tornus; two costal patches from 2/3 of costal margin, divided with round patches of black scales basally; a black transverse streak connecting costal patches, medial fascia extending toward postmedial patch; apical patch four dots along termen edged with black scales from apical margin; fringe cilia brownish yellow, gray near tornus. Hindwing and fringe cilia pale gray. Hind femur and tibia ocherous brown; tarsus dark brown except white along apical margin of each tarsomere.

Wing venation ( Fig. 7b ). Forewing wide-lanceolate: R 4 and R 5 stalked at 1/2 length; M 1 and M 2 parallel; M 3 from anal angle of cell. Hindwing lanceolate: M 1 and M 2 slightly parallel; M 3 from anal angle of cell; CuP and 1A + 2A weakly developed.

Male genitalia ( Fig. 10 ). Uncus basal half widened, apical half slender, rostral, broadly downcurved and pointed apically, with sparse setae. Gnathos lingulate, shorter than uncus; basal half broadened to base; apical half scaly and obtuse with dentate discoidal apical process. Valvae slightly asymmetrical in holotype (some paratypes, symmetrical) and hemielliptic; costa setose, broadened to half; apical half rough; right apex digitate; left apex slightly more pointed; sacculus, basal half narrow, parallel-sided, apical half setose; apex acuminate with incurved setae extending beyond costa. Juxta well-developed and asymmetrical bifurcate lobes elongated from basal plate; right lobe broadened at apical half and pointed apically; left lobe same length as valva and slightly shorter than right lobe, narrowed apically with pointed apex; anterior process ampulliform, broadened toward basal 1/3 and digitate apex. Saccus short and blunt apex. Phallus slightly curved, slightly constricted at middle with dilated apex, same length as juxta; vesica with single short, spiniform cornutus; apical spine absent.

Female genitalia ( Fig. 13 ). Papilla analis triangular with obtuse apex, setose. Apophysis anterioris 2/3 length of apophysis posterioris. Lamella postvaginalis circular, emarginate posteriorly and setose laterally.Antrum cylindrical, posteriorly bulged with lateral processes, straight in middle, slightly dilated and narrowed to ductus bursae with a sclerotized arch basally. Ductus seminalis arising from posterior end of ductus bursae. Ductus bursae wrinkled, gradually narrowed with a coil near corpus bursae. Corpus bursae small, ovoid; signum absent.

Distribution. Japan (Hokkaido, Honshu, Shikoku, Kyushu, Tsushima-Islands).

Etymology. This species is named in honor of the Japanese lepidopterist Tatsuo Inoko, who has contributed to the knowledge of the Lepidoptera fauna of Hokkaido.

Remarks. This species was first recorded in Hokkaido based on three adults collected by T. Komatsu ( Komatsu 2017) but was designated only by its Japanese name without description nor scientific name. There have been no further records since 2003 in Hokkaido, but we found additional specimens throughout the mainland of Japan.

Figures

FIGURES 1–6. Adults of Promalactis spp. 1, P. inokoi sp. nov. holotype, ♂; 2, P. inokoi paratype, ♀; 3, P. kogii sp. nov. holotype, ♂; 4, P. kogii paratype, ♀; 5, P. hoenei ♂; 6, P. hoenei, ♀. Scale bars= 5.0 mm.

FIGURES 7–9. Labial palpus and wing venation of Promalactis spp. 7a, P. inokoi sp. nov. holotype, ♂; 7b, P. inokoi paratype, ♂; 8a, P. kogii sp. nov. holotype, ♂; 8b, P. kogii paratype, ♂; 9a, P. hoenei, ♂; 9b, P. hoenei, ♂. Scale bars = 1.0 mm.

FIGURES 10–12. Male genitalia of Promalactis spp. 10, P. inokoi sp. nov. holotype; 11, P. kogii sp. nov. holotype; 12, P. hoenei. Scale bars = 0.50 mm.

FIGURES 13–15. Female genitalia of Promalactis spp. 13, P. inokoi sp. nov. paratype; 14a, P. kogii sp. nov. paratype; 14b, signum of P. kogii; 15a, P. hoenei; 15b, posterior end of ductus bursae of P. hoenei; arrow indicates the opening of ductus seminalis of P. hoenei. Scale bars = 0.50 mm.