Redescriptions of two parasitoids, Metapelma beijingense Yang (Hymenoptera, Eupelmidae) and Spathius ochus Nixon (Hymenoptera, Braconidae), parasitizing Coraebus cavifrons Descarpentries & Villiers (Coleoptera, Buprestidae) in China with keys to genera or species groups

Liang Ming Cao; Cornelis van Achterberg; Yan Long Tang; Zhong Qi Yang; Xiao Yi Wang; Tian Wen Cao

doi:10.3897/zookeys.926.48688

Redescriptions of two parasitoids, Metapelma beijingense Yang (Hymenoptera, Eupelmidae) and Spathius ochus Nixon (Hymenoptera, Braconidae), parasitizing Coraebus cavifrons Descarpentries & Villiers (Coleoptera, Buprestidae) in China with keys to genera or species groups

Zookeys. 2020 Apr 13:926:53-72. doi: 10.3897/zookeys.926.48688. eCollection 2020.

Authors

Liang Ming Cao¹, Cornelis van Achterberg², Yan Long Tang³, Zhong Qi Yang¹, Xiao Yi Wang¹, Tian Wen Cao⁴

Affiliations

¹ The Key Laboratory of Forest Protection of National Forestry and Grassland Administration, Research Institute of Forest Ecology, Environment and Protection, Chinese Academy of Forestry, Beijing 100091, China.
² State Key Laboratory of Rice Biology, Ministry of Agriculture Key Lab of Agricultural Biology of Crop Pathogens and Insects, and Institute of Insect Sciences, Zhejiang University, Hangzhou 310058, China.
³ Laboratory of Regional Characteristic for Conservation and Utilization of Plant Resource in Chishui River Basin, College of Biology and Agriculture, Zunyi Normal University, Zunyi, 563002, China.
⁴ Shanxi Insect Herbarium, Institute of Plant Protection, Shanxi Academy of Agricultural Sciences, Taiyuan 030031, China.

Abstract

Two parasitoids, Metapelma beijingense Yang (Hymenoptera, Eupelmidae) and Spathius ochus Nixon (Hymenoptera, Braconidae) are redescribed and illustrated. Both were reared from Coraebus cavifrons Descarpentries & Villiers (Coleoptera, Buprestidae) boring in Symplocos stellaris Brand (Symplocaceae). Metapelma beijingense is a solitary parasitoid with a parasitism rate of about 13.5% and S. ochus is a gregarious parasitoid with a parasitism rate of about 21.2%. A revised key to Oriental and Palaearctic species of Metapelma Westwood and a key to the species of the Spathius labdacus-group are provided.

Keywords: Coraebus; Symplocos stellaris; natural enemy; synparasitism; woodborer.

Liang Ming Cao, Cornelis van Achterberg, Yan Long Tang, Zhong Qi Yang, Xiao Yi Wang, Tian Wen Cao.

Grants and funding

The Key Laboratory of Forest Protection, State Forestry and Grassland Administration of China, Research Institute of Forest Ecology, Environment and Protection, Chinese Academy of Forestry