Abstract

Japanese species of the genus Xanthopimpla Saussure, 1892 are revised. A total of 15 species are recorded from Japan, including three new species, X. nipponensissp. nov. X. sylvicolasp. nov. and X. yoshimuraisp. nov. and three species, X. honorata (Cameron, 1899), X. minuta Cameron, 1905 and X. trias Townes & Chiu, 1970, newly recorded from Japan. Host, habitat, overwintering and distribution patterns of Japanese Xanthopimpla species are discussed.

Highlights

  • Xanthopimpla Saussure, 1892 is a large genus belonging to subfamily Pimplinae and containing 265 species from all zoogeographical regions (Yu et al 2016)

  • Xanthopimpla trias, X. naenia Morley, 1913 and X. nipponensis sp. nov. were recovered as distinct clades

  • The individuals that were treated as X. clavata were found to comprise two distinct clades with high bootstrap values in Maximum Likelihood (ML) and posterior probabilities in Bayesian Inference

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Summary

Introduction

Xanthopimpla Saussure, 1892 is a large genus belonging to subfamily Pimplinae and containing 265 species from all zoogeographical regions (Yu et al 2016) Wasps of this genus have a bright-yellow-coloured body, usually with black spots, which makes this genus one of the most recognisable taxa amongst the Ichneumonidae. The distribution of this genus is strongly biased toward tropical or subtropical areas (Townes and Chiu 1970, Gómez et al 2014) and it is one of the major representatives of tropical ichneumonids in Asia (Townes and Chiu 1970) Wasps of this genus are known as solitary koinobiont endoparasitoids of lepidopterous larvae and pupae (Trehan and Butani 1950, Smith et al 1993, Paull and Austin 2006) and are, potentially important natural enemies of crop and forest pests (Momoi 1966, Yasumatsu 1967, Townes and Chiu 1970). Momoi (1970) reviewed the species of this genus collected from Ryukyu Islands and recorded eight for Japan

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