Macrophya katayamai Shinohara, 2020

Kumar, Deepthi S & Sankar, Manimuthu M, 2023, Taxonomic Notes and New Distribution and Host Plant Records for Sawflies and Woodwasps (Hymenoptera, Symphyta) of Japan VIII, Bulletin of the National Museum of Nature and Science. Series A, Zoology 49 (2), pp. 57-74 : 60

Macrophya katayamai Shinohara, 2020

New Japanese name: Maruba-aodamo-kuro-habachi

( Fig. 3 )

Larva. Middle to late instars ( Fig. 3A–D ): Head pale gray, with obscure dark area laterally; trunk very pale greenish. Mature larva ( Fig. 3E ): Head greenish white; trunk vivid pale green, shiny.

Material examined. HONSHU: Tochigi Pref.: 1Ə, Nakagawa, Bato, coll. larva on Fraxinus sieboldiana , 28. IX. 2017, mat. 9. X., em. (found dead) 1. V. 2018, S. Ibuki; 1 $ ( Fig. 3F ), Nakagawa, Bato, Sukusukunomori, coll. larva on Fraxinus sieboldiana , 10. VII. 2017, mat. 30. X., em. 30. IV. 2018, S. Ibuki.

Host plant. Oleaceae : Fraxinus sieboldiana Blume (new record).

Life history. In Nakagawa, Tochigi Prefecture, Ibuki found two larvae of this species feeding on Fraxinus sieboldiana in July and September. They both matured and entered the soil in October. The larvae were solitary leaf feeders, coiled at rest. Two adults emerged in spring next year. This species is regarded as univoltine. The larval period of this species was very long. One larva collected on July 10, 2017, reached maturity on October 30 (see above) .

Remarks. The host plant and immature stages of this species were unknown. Among the Japanese species of Macrophya , the larva of M. satoi Shinohara & Li, 2015 , is known to feed on Fraxinus japonica ( Shinohara and Li, 2015; Shinohara, 2020) but the larva of this species is still undescribed. The larvae of the two species cannot be differentiated for now.

Figures

Fig. 3.ɹMacrophya katayamai. A, Middle instar larva on Fraxinus sieboldiana, Bato, 15. VII. 2017; B, same larva, 20. VII.; C, same larva, 8. VIII.; D, same larva, 13. IX.; E, same larva, matured, 30. X.; F, female adult, same individual as A–E, emerged, 30. IV. 2018. Photographed by Ibuki.