Project's information

Project's title Study on the biodiversity and ecological characteristics of solitary wasps (Hymenoptera: Vespidae: Eumeninae) in North Vietnam
Project’s code ĐLTE00.08/20-21
Research hosting institution Institute of Ecology and Biological Resources
Project leader’s name Dang Thi Hoa
Project duration 01/01/2020 - 31/12/2021
Project’s budget 500 million VND
Classify Excellent
Goal and objectives of the project

The purpose of the study is to clarify the diversity and biological characteristics of solitary wasps in the Northeast region of Vietnam. Specific goals of the topic:
- Determining the composition of solitary wasps belonging to the subfamily Eumeninae in the study area.
- Determination of some biological and ecological characteristics of solitary wasps belonging to the subfamily Eumeninae recorded in the study area.


Main results

- A total of 23 species in 16 genera have been recorded in the study areas, of which a new species, Pararrhynchium simsanum Nguyen & Tran, 2021, has been described.
- Three types of nests including “burrowers” (3 species), “builders” (6 species), and “renters” (6 species) were collected. The detailed structure of the nests of 13 species was determined.
- The development of those species has 5 stages: egg, larva, pre-pupa, pupa, and adult, recording morphological characteristics and duration of each development phase.
- Their prey is caterpillars. The number and phenotype of prey in each provisioned cell were determined.
- Their natural enemies were 9 species, belonging to 6 families of 3 orders.
- Two common species, Pareumenes quadrispinosus and Rhynchium brunneum, were identified as natural enemies of pest insects.


Novelty and actuality and scientific meaningfulness of the results

- One new species was discovered and described.
- A collection of more 150 species of solitary wasps and their natural enemies was built up for futher research.
- Biological and ecological characteristics of some species of solitary wasps were discovered.

Products of the project

- Scientific papers in referred journals (list):
1. Hoa T. Dang, Alexander V. Fateryga, 2021. Nesting biology of Pareumenes quadrispinosus (de Saussure, 1855) (Hymenoptera: Vespidae: Eumeninae) in trap nests in North Vietnam. Journal of Asia-Pacific Entomology, 24 (2021): 1275-1285.  
2. Lien Thi Phuong Nguyen, Ngat Thi Tran, Dien Trong Bui & Toshko Ljubomirov, 2021. Contribution to the genus Pararrhynchiumde Saussure (Hymenoptera: Vespidae: Eumeninae), with description of two new species from Vietnam. Zootaxa 5082 (2): 159-168.
- Specimen collection:  more 150 species of solitary wasps and their natural enemies.

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