Nipponorhynchus mirabilis Takeuchi

Smith, David R. & Naito, Tikahiko, 2015, Studies on Adelestini (Hymenoptera, Tenthredinidae), particularly the long-tongued Nipponorhynchus Takeuchi of Japan, Journal of Hymenoptera Research 45, pp. 1-14 : 6-7

Nipponorhynchus mirabilis Takeuchi

Figs 1 , 5 , 9 , 13 , 18 , 21 , 22 , 30 , 31

Nipponorhynchus mirabilis Takeuchi, 1941: 233; Takeuchi and Tokunaga 1941: figs 1-7; Malaise 1963: 169, 213, figs 138-140; Naito 1973: 96, fig. 2; Jervis and Vilhelmsen 2000: 134, fig. 5 (mouthparts).

Diagnosis.

Head roughened, with punctures. Maxillolabial process about 1.4 × head width and 3 × eye height (Figs 1 , 5 ). Malar space longer than diameter of median ocellus. Posttergite short, narrow, of equal width throughout (Fig. 13 ). Lancet with single row of annular spines, not more than 4 or 5 spines on basal annuli (Fig. 18 ). Male genitalia (Figs 21 , 22 ) with valviceps of penis valve round.

Specimens examined.

JAPAN: Mt. Ooginosen, Hyogo Pref., 900 m, 22.V.2006, T. Naito (3 ♀, 1 ♂); Hyogo Pref., Akazai-keikoku, 600 m, 21.IV.2008, T. Naito (2 ♂).

Distribution.

Japan (Honshu).

Host and biological notes.

The host and life history are similar to those of N. bimaculatus . The larva (Fig. 31 ) also feeds on Chrysosplenium macrostemon Maxim var. shiobarense , but N. mirabilis occurs somewhat earlier in the season, and the head of the larva is black (Fig. 30 ). See notes under N. bimaculatus .

Figures

Figures 1 - 4. Head, front view. 1 Nipponorhynchus mirabilis 2 N. bimaculatus 3 N. brevis 4 Adelesta nova.

Figures 5 - 8. Head, lateral view. 5 Nipponorhynchus mirabilis 6 N. bimaculatus 7 N. brevis 8 Adelesta nova.

Figures 9 - 16. 9 - 12 Head, dorsal view. 13 - 16 Apex of mesonotum showing posttergite 9, 13 Nipponorhynchus mirabilis 10, 14 N. bimaculatus 11, 15 N. brevis 12, 16 Adelesta nova.

Figures 17 - 20. 17 Nipponorhynchus brevis, lateral view 18 - 20 Female lancets 18 N. mirabilis 19 N. bimaculatus 20 N. brevis.

Figures 21 - 26. Male genitalia. 21, 23, 25 Genital capsule, ventral view 22, 24, 26 Penis valve, lateral view 21, 22 N. mirabilis 23, 24 N. bimaculatus 25, 26 N. brevis.

Figures 27 - 31. Nipponorhynchus spp. and the host plant, Chrysosplenium macrostemon var. shiobarense. 27 N. bimaculatus, adult drinking honey of the host plant 28 N. bimaculatus adult female ovipositing into a seed capsule of the host plant. 29 N. bimaculatus larva eating young seeds of host plant 30 N. mirabilis, larva eating young seeds of host plant 31 N. mirabilis pupa in cocoon in soil.