Filatima angustipennis Sattler, 1961

Oh, Hyonju, Zhang, Xiuying & Li, Houhun, 2023, Taxonomy of the genus Filatima Busck, 1939 (Lepidoptera: Gelechiidae) in China, Zootaxa 5343 (5), pp. 471-488 : 473

Filatima angustipennis Sattler, 1961

( Figs 1 , 11 , 21 )

Filatima angustipennis Sattler, 1961: 117 ; Huemer and Karsholt, 1999: 162.

Filatima albicostella Clarke, 1942: 272 . Misidentification [?].

Material examined. CHINA, Xinjiang: 1♁, Alar National Wetland Park , Taxkorgan County (37.84°N, 75.21°E), 3020 m, 27.VII.2019, leg. HH Li & XY Zhang, slide No. OHJ20876 .

Diagnosis. Adult ( Fig. 1 ): Wingspan 17.0 mm. Filatima angustipennis is superficially similar to F. ukrainica Piskunov, 1971 . It can be distinguished by the lack of a saccus and the phallus without cornuti ( Fig. 21 ), while the saccus is well developed and the phallus has cornuti in the latter species ( Medvedev 1989: fig. 655-11). This species is also similar to F. xanthuris ( Meyrick, 1927) in male genitalia, and it can be distinguished by the sacculus as long as the valva and the posterior margin of the vinculum deeply emarginated in triangle. In F. xanthuris , the sacculus is shorter than the valva, and the posterior margin of the vinculum is weakly emarginated ( Hodges & Adamski 1997: fig. 15).

Distribution. China (Xinjiang), France, Russia ( Bidzilya 2002: 68), USA.

Note. This species is newly recorded in China.

Remarks. Filatima angustipennis was synonymized with F. albicostella by Sattler (1968). Huemer and Karsholt (1999) reinstated F. angustipennis as a valid species based on the difference in the length and the emargination width of the vinculum as well as the shading of the color. However, the length and the emargination width of the vinculum are unreliable characters for a likely spreading species, and the shading of the color was also observed in the congeneric species, such as F. pallipalpella ( Snellen, 1884) ( Bidzilya and Nupponen 2018: 397) and F. yanchiensis sp. nov. In this sense, F. angustipennis is most likely a synonym of F. albicostella as established by Sattler (1968). As there is only one specimen in this study, we herein follow Huemer and Karsholt (1999), treating F. angustipennis as a valid species.

Figures

FIGURES 1-10. Adults of Filatima spp. 1, F. angustipennis Sattler, 1961, ♁; 2, F. asiatica Sattler, 1961, ♁; 3, F. karsholti Ivinskis & Piskunov, 1989, ♁; 4, F. magnanella sp. nov., holotype, ♁; 5, F. multicornuta Bidzilya & Nupponen, 2018, ♁; 6, F. pagicola (Meyrick, 1936), ♁; 7, F. pallipalpella (Snellen, 1884), 7a, under surface of male hindwing (arrow indicates a row of scales at basal 2/3 along R), ♁; 8, F. nanjiangica sp. nov., holotype, ♁; 9, F. taxkorgana sp. nov., holotype, ♁; 10, F. yanchiensis 5 sp. nov., paratype, ♁. Scales = 2.0 mm.

FIGURES 11-20. Male segment 8 of Filatima spp. 11, F. angustipennis Sattler, 1961, slide No. OHJ20876; 12, F. asiatica Sattler, 1961, slide No. OHJ20887; 13, F. karsholti Ivinskis & Piskunov, 1989, slide No. OHJ20879; 14, F. magnanella sp. nov., holotype, slide No. OHJ20889; 15, F. multicornuta Bidzilya & Nupponen, 2018, slide No. OHJ20927; 16, F. pagicola (Meyrick, 1936), slide No. OHJ20918; 17, F. pallipalpella (Snellen, 1884), slide No. OHJ20881; 18, F. nanjiangica sp. nov., holotype, slide No. OHJ20900; 19, F. taxkorgana sp. nov., holotype, slide No. OHJ20980; 20, F. yanchiensis sp. nov., holotype, slide No. OHJ20894. Scales = 0.2 mm.

FIGURES 21-25. Male genitalia of Filatima spp. 21, F. angustipennis Sattler, 1961, slide No. OHJ20876; 22, F. asiatica Sattler, 1961, slide No. OHJ20887 (a, b), OHJ20899 (c); 23, F. karsholti Ivinskis & Piskunov, 1989, slide No. OHJ20879; 24, F. magnanella sp. nov., holotype, slide No. OHJ20889; 25, F. multicornuta Bidzilya & Nupponen, 2018, slide No. OHJ20927. Scales = 0.2 mm.