Filatima asiatica Sattler, 1961

Filatima asiatica Sattler, 1961 View in CoL

( Figs 2 View FIGURES 1-10 , 12 View FIGURES 11-20 , 22 View FIGURES 21-25 )

Filatima asiatica Sattler, 1961: 119 View in CoL . TL: Kyrgyzstan. TD: MfN.

Filatima bidentella Bidzilya, 1998: 52 View in CoL . Synonymized by Bidzilya & Nupponen (2018: 392).

Material examined. CHINA, Hebei: 2♁, Saihanba National Forest Park ( 42.40°N, 117.25°E), 1504 m, 16.VII.2019, leg. SN Zhao & SR Li, slide No. OHJ20887 GoogleMaps . Qinghai: 1♁, Xianmi Village , Menyuan County ( 37.16°N, 102.02°E), 2731 m, 16.VII.2019, leg. SL Hao & XJ Zhu, slide No. OHJ20899 GoogleMaps . Ningxia: 1♁, Qingyangjing Natural Village, Huamachi Town , Yanchi County ( 37.96°N, 107.18°E), 1469 m, 18.Ⅴ.2017, leg. K Lou, slide No. OHJ20923 GoogleMaps .

Diagnosis. Adult ( Fig. 2 View FIGURES 1-10 ): Wingspan 15.0–17.0 mm. Filatima asiatica is superficially similar to F. pagicola ( Meyrick, 1936) . It can be distinguished by the forewing without a cream white spot at the costal margin, and in the male genitalia by the absence of the anellus lobes and the phallus with three cornuti ( Fig. 22 View FIGURES 21-25 ); in F. pagicola , the forewing has an indistinct cream white spot near basal 3/4 of the costal margin ( Fig. 6 View FIGURES 1-10 ), the anellus lobes are well developed, and the phallus has two cornuti ( Fig. 26 View FIGURES 26-30 ). This species is similar to F. karsholti Ivinskis & Piskunov, 1989 in male genitalia, and it can be distinguished by the saccus distinctly narrowed to narrowly rounded apex, and the phallus with weakly sclerotized, folded bands in distal 2/3; in F. karsholti , the saccus is subparallel to before obtuse apex, and the phallus has a triangular sclerite in the distal 2/3 ( Fig. 23 View FIGURES 21-25 ).

Variation. The number of the teeth in the middle of the cornutus varies: two teeth are found in specimens collected from Ningxia and Qinghai ( Fig. 22-c View FIGURES 21-25 ), while one tooth is present in specimens collected from Hebei ( Fig. 22-b View FIGURES 21-25 ). There are some variations in the shape of the saccus: the distinctly narrowed saccus is longer than the sacculus in the specimens from China, whereas the slightly narrowed saccus is shorter than the sacculus in the specimens from Russia ( Bidzilya & Nupponen 2018: fig. 37).

Distribution. China ( Hebei, Ningxia, Qinghai), Kyrgyzstan, Mongolia, Russia.

Note. This species is newly recorded in China.