Tischeria decidua siorkionla Kozlov, 1986

Kobayashi, Shigeki, Sato, Hiroaki, Hirano, Nagao, Yamada, Kazutaka & Hirowatari, Toshiya, 2016, A review of the Japanese species of the family Tischeriidae (Lepidoptera), ZooKeys 601, pp. 127-151 : 136-139

Taxon classification Animalia Lepidoptera Tischeriidae

Tischeria decidua siorkionla Kozlov, 1986 Fig. 6

Tischeria decidua Wocke, 1876: 41-43; Sato 1993: 552-553, fig. 4.

Tischeria decidua siorkionla Kozlov, 1986: 25; Stonis et al. 2014: 148-151, figs 25-35.

Type locality.

Russia: the Russian Far East (Primorskiy Territory).

Material examined.

29(18♂ 11♀)

Host Quercus acutissima : 2♂ 3♀, Komaga-take-SA, Komagane, Nagano Pref., 12-15.viii.2010em., S. Kobayashi leg., 1.viii.2010(larva), SK554, 594; 9♂ 8♀, Tsubata-cho, Ishikawa Pref., ix.1983em., I. Togashi leg., viii.1983, HK705, 706; 1♂, Awara-cho, Fukui Pref., 25.viii.1987em., HK948; 1♂, Kazura, Soni, Uda, Nara Pref., 31.vii.2013em., S. Kobayashi leg., 13.vii.2013(larva), SK555; 2♂, Iwawaki-san, Osaka Pref., 23.v.1980em., H. Kuroko leg., 3.xi.1979.

Host Quercus crispula : 2♂, Minodo, Nagano Pref., 13.v.1980em., H. Kuroko leg., SK595.

Host unknown: 1♂, Ohdaigahara, Kamikitayama, Yoshino, Nara Pref., 20.vii.2009(L.T.), T. Hirowatari, K. Ikeuchi, S. Kobayashi, K. Akita, A. Inotsuka & T. Yoshida leg., SK214.

Diagnosis.

See Stonis et al. (2014).

Male genitalia (Fig. 6). (9 preparations examined). See Sato (1993, 4 A–E) and Stonis et al. (2014, fig. 26-29, 31, 33, 35).

Female genitalia See Sato (1993, fig. 4F).

Distribution.

Russia: the Russian Far East (Primorskiy Territory); Japan: Hokkaido, Honshu, Kyushu (Tsushima Is.).

Host plants.

Quercus acutissima Carruth., Quercus crispula Blume, Quercus dentata Thunb., Quercus serrata Thunb., and Quercus variabilis Blume, Fagaceae in Japan ( Sato 1993). Quercus mongolica Fisch. ex Ledeb. and Quercus serrata in Russia ( Kozlov 1986; Stonis et al. 2014).

Biology.

(Fig. 13-3). See Sato (1993) and Stonis et al. (2014).

Remarks.

In Japan, this species had been treated as ' Tischeria decidua Wocke’ until the East Asiatic subspecies Tischeria decidua siorkionla was described by Kozlov (1986). Stonis et al. (2014) reported that Japanese representatives of Tischeria decidua belonged to the subspecies siorkionla Kozlov. In the Japanese specimens we studied, the apex of the valva is broader (present study: 50-65 μm; Stonis et al. (2014): 65 μm), but other characters were considered to lie within the range of individual variation, e.g., some specimens have a rather prominent median bulge and sinuous inner margin of the valva (Fig. 6A, D, G, L; Sato 1993, 4D), i.e. more similar to that of the nominotypical European subspecies; others have a rather longer but less prominent median bulge and nearly straight inner margin of the valva (Fig. 6J, K, M; Sato 1993, fig. 4A, E), i.e. more similar to that of Tischeria decidua siorkionla . The chitinized basal part of the phallus tends to be less developed and the transverse bar is shorter in Japanese material than in the nominotypical European subspecies (Fig. 6C, F, I), as shown by Stonis et al. (2014). In conclusion, we treat the Japanese representatives as Tischeria decidua siorkionla following Stonis et al. (2014) on the basis of the broader apex of the valva and the less developed basal part of the phallus (Fig. 6).