Discovery of a New Plagiotrochus Species (Hymenoptera: Cynipidae) Inducing Galls on the Evergreen Oak in Japan

Tatsuya Ide; Nakatada Wachi; Yoshihisa Abe

doi:10.1603/AN10101

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Tatsuya Ide,¹ Nakatada Wachi,² Yoshihisa Abe^1,*

¹1Biosystematics Laboratory, Graduate School of Social and Cultural Studies, Kyushu University, Motoo
²2Graduate School of Systems Life Sciences, Kyushu University, Hakozaki, Fukuoka 812-8581, Japan.

^*Corresponding author, e-mail: y_abe@scs.kyushu-u.ac.jp.

Abstract

Plagiotrochus masudai Ide, Wachi & Abe sp. nov. (Hymenoptera: Cynipidae), a gall inducer on Quercus (Cyclohalanopsis) glauca Thunberg in Japan, is described. This is the first description of an oak gall wasp species (tribe Cynipini) inducing galls on Cyclohalanopsis. The unique life cycle of P. masudai takes 3 yr to complete. The adult wasps of the sexual generation emerge from bud galls on Q. glauca in spring of the first year, and those of the asexual generation emerge from twig galls in spring of the third year.

Citation Download Citation

Tatsuya Ide, Nakatada Wachi, and Yoshihisa Abe "Discovery of a New Plagiotrochus Species (Hymenoptera: Cynipidae) Inducing Galls on the Evergreen Oak in Japan," Annals of the Entomological Society of America 103(6), 838-843, (1 November 2010). https://doi.org/10.1603/AN10101

Accepted: 17 June 2010; Published: 1 November 2010