Biodiversity Data Journal :
Taxonomic Paper
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Corresponding author: Elijah J Talamas (billy.jenkins@GMAIL.COM)
Academic editor: Jose Fernandez-Triana
Received: 29 Apr 2020 | Accepted: 28 May 2020 | Published: 11 Jun 2020
© 2020 Huayan Chen, Elijah Talamas, Hong Pang
This is an open access article distributed under the terms of the Creative Commons Attribution License (CC BY 4.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.
Citation:
Chen H, Talamas EJ, Pang H (2020) Notes on the hosts of Trissolcus Ashmead (Hymenoptera: Scelionidae) from China. Biodiversity Data Journal 8: e53786. https://doi.org/10.3897/BDJ.8.e53786
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Trissolcus Ashmead (Hymenoptera: Scelionidae) is a cosmopolitan genus of egg-parasitoid wasps associated with stink bugs (Pentatomidae, Scutelleridae, Urostylididae), many of which are important insect pests. Documentation of host associations for these wasps, which we here provide via museum specimens, can support their use as biological control agents of invasive stink bugs.
The hosts of seven Trissolcus species are reported from China: Trissolcus cultratus (Mayr) (hosts: Hippotiscus dorsalis Stål, Pentatomidae; Urochela luteovaria Distant, Urostylididae), Trissolcus elasmuchae (Watanabe) (host: Niphe elongata (Dallas), Pentatomidae), Trissolcus japonicus (Ashmead) (hosts: Erthesina fullo (Thunberg), Pentatomidae; Rhaphigaster nebulosa (Poda), Pentatomidae), Trissolcus latisulcus (Crawford) (host: Poecilocoris latus Dallas, Scutelleridae), Trissolcus mitsukurii (Ashmead) (host: Pentatomidae), Trissolcus semistriatus (Nees von Esenbeck) (host: Eurydema sp., Scutelleridae), Trissolcus yamagishii Ryu (host: Niphe elongata (Dallas), Pentatomidae).
Biological control, egg parasitoid, Platygastroidea, stink bug
Species of Trissolcus are egg parasitoids of stink bugs, many of which are important agricultural pests. During the past decade, the Asian fauna of Trissolcus has received increased attention, driven largely by the search for biological control agents to manage two invasive stink bugs of global significance: Halyomorpha halys (Stål) and Bagrada hilaris (Burmeister) (Pentatomidae). The research required to develop effective biological control programs against these pests is multifaceted and includes taxonomy, behavior, ecology, molecular diagnostics and assessments of host specificity for candidate biocontrol agents (
Zhejiang Univerity in Hangzhou is a leading institution in building insect collections in China, with emphasis on parasitic Hymenoptera (
This work is based on specimens deposited in the Institute of Insect Sciences, Zhejiang University, Hangzhou, China (ZJU). The label data of all specimens have been georeferenced and recorded in the Hymenoptera Online database. Specimens were identified to species using the keys of
China (Qinghai, Shaanxi, Sichuan, Guizhou, Jiangsu, Zhejiang, Taiwan); Austria, Belgium, Czech Republic, France, Germany, Hungary, Japan, Poland, Russia, South Korea, Sweden, Switzerland and United Kingdom (
Host associations. This species was reared from the eggs of Hippotiscus dorsalis Stål (Pentatomidae), Urochela luteovaria Distant (Urostylididae) and some unidentified species of Pentatomidae in China.
China (Zhejiang, Taiwan); France, India, Japan, South Korea, Sweden, United Kingdom and Vietnam (
Host associations. This species was reared from the eggs of Niphe elongata (Dallas) (Pentatomidae) in China.
China (Gansu, Shandong, Zhejiang, Taiwan); Italy, Japan, Russia, South Korea, Switzerland and the United States (
Host associations. This species has previously been recorded emerging from the eggs of Halyomorpha halys (Stål) in China (Yang et al. 2009). In this study, we found that this species has also been reared from the eggs of Erthesina fullo (Thunberg) (Pentatomidae), Rhaphigaster nebulosa (Poda) (Pentatomidae) and some other unidentified species of Pentatomidae.
China (Yunnan, Taiwan); India, Laos, Malaysia, Philippines, Thailand and Vietnam (
Host associations. This species was reared from the eggs of Poecilocoris latus Dallas (Scutelleridae) in China.
China (Guizhou, Zhejiang, Jiangxi, Hunan); Italy, Japan, South Korea, Thailand and the United States (quarantine) (
Host associations. This species was reared from the eggs of some unidentified species of Pentatomidae in China.
Trissolcus mitsukurii
China (Xinjiang, Shaanxi); Italy, Morocco, Portugal, Sweden and Switzerland (
Host associations. This species was reared from the eggs of Eurydema sp. (Pentatomidae) and an unidentified species of Pentatomidae in China.
China (Hunan); India, Laos, South Korea, United Arab Emirates and Vietnam (
Host associations. This species was reared from the eggs of Niphe elongata (Dallas) (Pentatomidae) in China.
This species is newly recorded from China.
Summary of host associations
A total of 123 specimens were examined and seven species are recognized. The hosts recorded on specimen label data are summarized below:
Pentatomidae
Erthesina fullo (Thunberg): T. japonicus
Eurydema sp.: T. semistriatus
Hippotiscus dorsalis Stål: T. cultratus
Niphe elongata (Dallas): T. elasmuchae, T. yamagishii
Rhaphigaster nebulosa (Poda): T. japonicus
Scutelleridae
Poecilocoris latus Dallas: T. latisulcus
Urostylididae
Urochela luteovaria Distant: T. cultratus
Specimens housed in museum and university collections are an immense and often irreplaceable source of biological information. This study produced immediately-applicable data that was gleaned from a historic collection simply by identifying specimens and recording label data. It is difficult and, sometimes, impossible to identify host eggs to species, based on morphology alone and several Trissolcus species in our study were reared from eggs identified only as Pentatomidae. New methods in molecular diagnostics that can identify trophic interactions from parasitized eggs have been used to overcome this challenge and identify associations between scelionid parasitoids and stink bugs (
We thank Dr. Xue-xin Chen and Dr. Pu Tang (University of Zhejiang) for the loan of material. This study is supported by Science and Technology Planning Project of Guangzhou, China (Grant No. 201904020041), the China Postdoctoral Science Foundation (2019M653187) and the Florida Department of Agriculture and Consumer Services, Division of Plant Industry.