Nesodiprion japonicus ( Marlatt, 1898 )

Hara, Hideho & Smith, David R., 2015, Japanese species of the sawfly genus Nesodiprion (Hymenoptera, Diprionidae), Zootaxa 4007 (4), pp. 481-508 : 505

Nesodiprion japonicus ( Marlatt, 1898)

Figs 3L–M , 8H , 10E

Lophyrus japonicus Marlatt, 1898: 506 .

Nesodiprion japonica: Rohwer 1910: 104 ; Okutani 1965: 76. Nesodiprion japonicus: Benson 1939: 339 ; Hara & Smith 2012: 2. For more synonymy, see Hara & Smith (2012).

Larva. Final feeding instar (semifinal instar) ( Fig. 3L ): Head yellow, with black band between eyes extending around frons; trunk pale yellow, dorsally gray green except for narrow anterior part and tenth abdominal segment; tenth abdominal segment pale orange; legs black. Prepupa (final instar larva) ( Fig. 3M ): Head yellow, without black marking; trunk pale reddish gray, dorsally darkened; legs black.

Additional material examined. JAPAN, HONSHU—Tokyo Met.: 1♂, Izu-Ōshima Is., 29. V. 1955, S. Momoi (HU). Nagano Pref.: 1♂, Nagano, Kitanagaike, em. 15. XI. 2010, H. Kojima ( NSMT). Gifu Pref.: 6♀ 10♂, Nakatsugawa, Sakashita, coll. larvae on Pinus densiflora (one small tree about 1m high) 25. VII. 2012, coc. late VII., em. 14–24. VIII. 2012, H. Hara ( NSMT). Wakayama Pref.: 2♂, Kainan, Shimotsu, VIII. 1928, F. Wada (HU). SHIKOKU—Ehime Pref.: 3♂, “Iyo Arakawa” (HU). KYUSHU—Kumamoto Pref.: 1♀, Kikuchi, 30. VII. 1918, M. Yano ( NSMT). Kagoshima Pref.: 3♀ 1♂, Tanegashima Is., Nshinoomote, Nakame, em. 18–31. X. 2014, host: Pinus amamiana, K. Ogata ( NSMT). Japan, locality undetermined: 1♀, “1• VIII Japan Arakawa” (HU).

Distribution. Japan: Izu-Ōshima Is. (new record), Tanegashima Is. (new record). For other localities, see Hara & Smith (2012).

Host plants. Pinaceae : Pinus amamiana Koidz. (new record). Pinus densiflora Siebold et Zucc. was confirmed as the host plant here. For more details, see Hara & Smith (2012).

Life history. This species has multivoltine life cycle. Hara collected about 20 late instar larvae on one small tree of Pinus densiflora about 1m high on late July, 2012. They were not gregarious. The final instar larvae made cocoons between needles without feeding in captivity. The adults emerged in middle and late August in the same year.

Remarks. This species is very similar to N. kagaensis in both the adult and larva. For their adult differences, see Hara & Smith (2012). The larval differences are unknown.

Figures

FIGURES 3 A – M. Nesodiprion albiventris (A – B, female), N. nigerrimus (C – D, female), N. kagaensis (E – H, female; I – J, male) and larvae of N. kagaensis (K, semifinal instar = final feeding instar) and N. japonicus (L, semifinal instar; M, final instar = prepupa). A – D, G – H, Holotypes; E – F, I – K, Obihiro; L – M, Nakatsugawa.

FIGURES 8 A – J. Prepectus and its adjacent areas, lateral view: Nesodiprion tsugae (A, male), N. kojimai (B, female; C, male), N. flavipes (D – E, female), N. kagaensis (F, female; G, male), N japonicus (H, male) and N. shinoharai (I, female; J, male). A – B, D, I, Reversed. A, Togakushi; B, D, holotypes; C, paratype, Kusatsu; E, paratype, Tomi; F – G, Obihiro; H, Nagano; J, Komoro.

FIGURES 10 A – L. Apex of mesoscutellum and metanotum, dorsal view: Nesodiprion kojimai (A, male), N. niger (B, female), N. flavipes (C, female), N. kagaensis (D, female), N japonicus (E, male) and N. shinoharai (F, female). A, Paratype, Yamanouchi; B – C, holotypes; D, Obihiro; E, Nagano; F, Sakuho.