Dusungwua paradichromella (Yamanaka, 1980)

(Figs 1, 9, 20, 31)

Eurhodope paradichromella Yamanaka, 1980: 69 . TL: Japan. TD: Coll. HY.

Eurhotope [sic] paradichromella: Lu (ed.), 1994: 30.

Eurhodope (Eurhophaea) paradichromella: Xu et al., 2005, In: Yang & Jin (eds.): 323.

Trachycera paradichromella: Roesler, 1987: 316 .

Furcata paradichromella: Du, Sung & Wu, 2005: 103 .

Trachycera nipponella Yamanaka, 2000: 233 . Syn. nov.

Trachycera yakushimensis Yamanaka, 2000: 235 . Syn. nov.

Trachycera vicinella Yamanaka, 2000: 235 . Syn. nov.

Dusungwua paradichromella: Kemal, Kizildağ & Koçak, 2020: 2 .

Diagnosis. Adult (Fig. 9) with wingspan 21.0̅23.0 mm. This species is characterized by the forewing has a small, blackish brown costal spot on inner margin of antemedial line, and a large, subtriangular, blackish brown posterior patch on outer margin of lower half of antemedial line; the uncus is gradually narrowed, the gnathos is clubbed, dentate apically, the transtilla has right-angled triangle postero-lateral lobe in the male genitalia (Fig. 20); the antrum is semicircular, the signum situates at posterior 2/5 of the corpus bursae in the female genitalia (Fig. 31). It is related to D. dichromella, but differs as noted in the diagnosis of the latter.

Material examined. 97 male and 77 female specimens in different localities of China are examined .

Distribution. China (Anhui, Beijing, Guangdong, Gansu, Guizhou, Henan, Hubei, Shandong, Shaanxi, Sichuan, Tianjin, Yunnan, Zhejiang), Japan.

Remarks. Three species Trachycera nipponella, T. yakushimensis and T. vicinella described by Yamanaka (2000) from Japan are synonymized with this species, because the differences among them are too tiny to be interspecific: the uncus is broader or narrower apically, the postero-lateral lobe is shorter or not, the valva is a little narrower or not. We treated these as intraspecific differences. Among these species, T. nipponella has the greatest diffrences with D. paradichromella, as is noted in the original description: nipponella ‘…apical process of gnathos nearly crescent-shaped, not stick-like as in paradichromella, and apex pointed, slightly hooked, apico-dorsal portion minutely indented…’. These differences, however, might be caused by mounting slides: crescent, slightly hooked at apex when mounted laterally; clubbed, minutely indented at apex when mounted dorsal-ventrally.