Allantus meridionalis (Takeuchi, 1933)

Fu, Yuanzun, Yuan, Yuan, Shen, Qian, Xu, Hao, Ye, Zheng, Guo, Li, Wu, Xiaoliang & Zhao, Yunhe, 2021, Taxonomic Notes and New Distribution and Host Plant Records for Sawflies and Woodwasps (Hymenoptera, Symphyta) of Japan VI, Bulletin of the National Museum of Nature and Science. Series A, Zoology 47 (4), pp. 163-188 : 166-168

Allantus meridionalis (Takeuchi, 1933)

Japanese name: O-shiroobi-kuro-habachi

( Fig. 2G–J )

Material examined. HONSHU: Tochigi Pref.:

1 ˂, Nakagawa, Wami, 33°46′N 140°10′E, coll. larva ( Fig. 2G ), on Sanguisorba officinalis , 20. IX. 2015, mat. 21. X., em. 16. XII. 2015, S. Ibuki; 1 ˂, same data but coll. larva, 25. IX. 2015 , mat. 14. X., em. 16. XI. 2015.

Larva. Early or middle instar ( Fig. 2G ): head pale gray; trunk and legs creamy white. Late instar ( Fig. 2H, J ): head pale pink; trunk and legs pale creamy white, with dorsal region pale greenish gray; thoracic legs tinted with pink. Mature larva ( Fig. 2I ): similar to late instar; head more yellowish.

Host plants. Rosaceae : Rosa spp. ( Okutani, 1967b), Fragaria × ananassa (Weston) Duchesne ex Rozier ( Okutani, 1967b), Sanguisorba officinalis L. (new record).

Life history. This is a multivoltine species. The larva is solitary, though a few larvae may occur on the same leaf ( Fig. 2G ). The larva has an extra molt on maturation and enters a rotten wood, not soil, to make a cell for diapause ( Kondo, 1969).

Remarks. Okutani (1959) described the larva of this species as Emphytus albicinctus Matsumura and Kondo (1969) published his observations on the life history of this species.

Figures

Fig. 2. A–F, Aglaostigma albicinctum: A, early or middle instar larva on Symplocarpus renifolius, 31. V. 2018; B, early or middle instar larva on Impatiens textorii, 29. V. 2016; C, late instar larva on Actinidia polygama, 25. VI. 2016; D, late instar larva on I. textorii, 30. V. 2016; E, late instar larva on A. polygama, 1. VII. 2016; F, mature larva, 10. VI. 2016. G–J, Allantus meridionalis: G, early instar, 20. IX. 2015; H, J, middle or late instar larva, 12. X. 2015; I, mature larva, 13. X. 2015. K–M, Apethymus kunugi: K, probably late instar larva, 10. V. 2019; L, same larva, 12. V. 2019; M, same larva, matured, and cast skin above, 17. V. 2019. N–P, Corymbas nipponica: N, middle instar larva, 17. VI. 2016; O, same larva, late instar, 26. VI. 2016; P, same larva, matured, and cast skin above, 29. VI. 2016.All photographed by Ibuki.