Stigmella betulicola

Rocienė, Agnė & Stonis, Jonas R., 2013, Nepticulidae (Lepidoptera) of East Asia (2). Study of a collection sample deposited at the Russian Academy of Sciences, with descriptions of new species and a checklist, Zootaxa 3652 (2), pp. 75-116 : 96-97

The betulicola group

6. Stigmella betulicola (Stainton, 1856)

Nepticula betulicola Stainton, 1856: 42 .

Host-plants. Betula humilis Schrank, B. nana L. , B. pendula Roth, B. platyphylla Sukaczev var. japonica (Miq.) H. Hara, B. pubescens Ehrh.

Distribution. Palaearctic. Widespread in Europe (from Ireland to north west and central European Russia and Tatarstan); recorded from the Russian Far East (Primorskiy Kray) and China to Japan (Honshu) (possibly with a continuous distribution throughout Siberia).

Material examined. 13, Kamenushka, 03.vii.1990, leg. Zakharov, gen. slide no. AG 213 (ZIN).

Discussion. In East Asia this species formerly was recorded only from Japan (Kemperman & Wilkinson 1985). However, a single specimen collected in Kamenushka (Ussuriysk District, Primorskiy Kray) confirms its occurrence on continental East Asia ( Figs 14–17 ) (new record).

7. Stigmella luteella (Stainton, 1857)

Nepticula luteella Stainton, 1857: 110 , 111.

Host-plants. Betula pendula Roth, B. pubescens Ehrh., occasionally B. nana L.

Distribution. Palaearctic. Widespread in Europe (from Ireland and Italy to northwestern and central European Russia). Known in Asia: Kazakhstan and The Russian Far East (Sakhalin) (possibly with a continuous distribution throughout Siberia) (van Nieukerken et al. 2004).

8. Stigmella sakhalinella Puplesis, 1984

Stigmella sakhalinella Puplesis, 1984: 115 , 116.

Stigmella discidia Schoorl & Wilkinson, 1986: 237 , 238.

Host-plants. Betula manshurica (Regel) Nakai, B. pendula Roth, B. platyphylla Sukaczev, B. pubescens Ehrh., B. utilis D. Don. ; possibly other Betula spp. (in East Asia).

Distribution. Palaearctic. Widespread in western and eastern Europe. Known from the Caucasus and eastern Asia: the Russian Far East (Primorskiy Kray and Sakhalin).

Material examined. 23, Gornotayezhnoe, 05.viii.1983, leg. R. Puplesis, gen. slide nos AG 263, 264 (ZIN).

Discussion. The apical cornuti of the aedeagus of S. sakhalinella are partially broken in the neotype (see the preceding paper, Stonis & Rocienė 2013: figs 17, 19). Therefore, we confirm morphological details of the male genitalia based on non-type material collected at the same locality as the neotype ( Figs 18, 19 ).

9. Stigmella attenuata Puplesis 1985

Stigmella attenuata Puplesis 1985: 62 .

Host-plant. Unknown.

Distribution. The Russian Far East: Primorskiy Kray.

Material examined. 13, Ryazanovka, 05.viii.1983, leg. R. Puplesis, gen. slide no. AG 211 (ZIN).

Discussion. The valvae are partially broken in the holotype of S. attenuata (see the preceding paper, Stonis & Rocienė 2013: figs 20, 21). Therefore, we confirm morphological details of the male genitalia based on non-type material collected at the same locality as the holotype ( Figs 20, 21 ).

10. Stigmella cathepostis Kemperman & Wilkinson, 1985

Stigmella cathepostis Kemperman & Wilkinson, 1985: 10 , 11. Host-plant. Carpinus tschonoskii Maxim.

Distribution. The Russian Far East (Primorskiy Kray) (new record) and Japan (Kyushu).

Material examined. 13, Gornotayezhnoe, 07.vii.1982, leg. R. Puplesis, gen. slide no. AG 153 (ZIN); 13, Ryazanovka, 09.viii.1983, leg. R. Puplesis, gen. slide no. AG 189 (ZIN).

Discussion. This species was previously known only from Kyushu, Japan (Kemperman & Wilkinson 1985). However, two specimens collected in Gornotayezhnoe (20 km E Ussuriysk) and Ryazanovka (Khasan District) confirm the occurrence (and possibly a wide distribution) of S. cathepostis in Primorskiy Kray and continental East Asia ( Figs 22–25 ) (new record).

11. Stigmella conchyliata Kemperman & Wilkinson, 1985

Stigmella conchyliata Kemperman & Wilkinson, 1985: 11 , 12.

Host-plant. Alnus sp.

Distribution. Japan: Kyushu.

12. Stigmella oplismeniella Kemperman & Wilkinson, 1985

Stigmella oplismeniella Kemperman & Wilkinson, 1985: 12 , 13.

Host-plant. Oplismenus undulatifolius (Ard.) Roem. & Schult. Distribution. Japan: Kyushu.

13. Stigmella populnea Kemperman & Wilkinson, 1985

Stigmella populnea Kemperman & Wilkinson, 1985: 13 , 14.

Host-plant. Populus nigra L.

Distribution. Japan: Hokkaido.

14. Stigmella titivillitia Kemperman & Wilkinson, 1985

Stigmella titivillitia Kemperman & Wilkinson, 1985: 14 , 15.

Host-plants. Alnus hirsuta Turcz., A. japonica (Thunb.) Steud. Distribution. Japan: Hokkaido.

Figures

FIGURES 14 – 17. Male genitalia of Stigmella betulicola (Stainton), slide no. AG 213 (ZIN). 14, ventral view; 15, dorsal view; 16, gnathos and apical part of aedeagus; 17, aedeagus. Scale bar 100 µm.

FIGURES 18 – 21. Male genitalia of Stigmella species. 18, S. sakhalinella Puplesis, slide no. AG 263 (ZIN); 19, S. attenuata Puplesis, slide no. AG 211 (ZIN); 20, same, dorsal view; 21, same, ventral view. Scale bar 100 µm.

FIGURES 22 – 25. Male genitalia of Stigmella cathepostis Kemperman & Wilkinson, slide no. AG 153 (ZIN). 22, general view; 23, aedeagus; 24, 25, different focus on genitalia. Scale bar 100 µm.