Abstract
In this paper, two orthocentrine genera, Gnathochorisis Förster, 1869 and Symplecis Förster, 1869, are recorded from Vietnam for the first time. One new species of Gnathoschorisis: G. sapaensis sp. nov., and four species of Symplecis: S. granulosus sp. nov., S. hoangliensis sp. nov., S. nudus sp. nov., and S. vietnamensis sp. nov., are described and illustrated. In addition, Gnathochorisis leleji Humala, 2021 is recorded from Vietnam for the first time. A key to females of known Oriental species of the genus Symplecis is provided.
References
- Broad, G.R., Shaw, M.R. & Fitton, M.G. (2018) Ichneumonid wasps (Hymenoptera: Ichneumonidae): their classification and biology. Handbooks for the Identification of British Insects. Vol. 7. Part 12. Royal Entomological Society, London, 418 pp. https://doi.org/10.1079/9781800625471.0000
- Dasch, C.E. (1992) The Ichneumon-flies of America north of Mexico: Part 12. Subfamilies Microleptinae, Helictinae, Cylloceriinae and Oxytorinae (Hymenoptera: Ichneumonidae). Memoirs of the American Entomological Institute, 52, 1–470.
- Delobel, A., Matile, S. (1976) Un nouveau Microleptinae (Hym. Ichneumonidae) parasite de Neoempheria ombrophila, n.sp. (Dipt. Mycetophilidae) en République Centrafricaine. Bulletin de l'Institut Fondamental d'Afrique Noire, Series A, 37, 385–394.
- Humala, A.E. (2017) New species of Gnathochorisis Förster (Hymenoptera, Ichneumonidae: Orthocentrinae) from the Neotropical region. Zootaxa, 4250 (3), 201–218. https://doi.org/10.11646/zootaxa.4250.3.1
- Humala, A.E., Choi, J.K., Lee, J.W. (2016) A review of the genera Gnathochorisis Förster and Symplecis Förster of South Korea, with notes on Korean orthocentrines (Hymenoptera, Ichneumonidae, Orthocentrinae). ZooKeys, 562, 85–104. https://doi.org/10.3897/zookeys.562.7303
- Humala, A.E. (2003) The ichneumonid wasps in the fauna of Russia and adjacent countries. Subfamilies Microleptinae and Oxytorinae (Hymenoptera, Ichneumonidae). Nauka, Moscow, 175 pp. [in Russian]
- Humala, A.E. (2021) First records of the genus Gnathochorisis Förster (Hymenoptera, Ichneumonidae, Orthocentrinae) in the Oriental region. In: Proshchalykin, M. & Gokhman, V.E. (Eds.), Hymenoptera studies through space and time: A collection of papers dedicated to the 75th anniversary of Arkady S. Lelej. Journal of Hymenoptera Research, 84, pp. 103–113. https://doi.org/10.3897/jhr.84.68700
- Mukai, H., Kitajima, H. (2019) Parasitoid wasps regulate population growth of fungus gnats genus Neoempheria Osten Sacken (Diptera: Mycetophilidae) in shiitake mushroom cultivation. Biological Control, 134, 15–22. https://doi.org/10.1016/j.biocontrol.2019.03.016
- Ranjith, A.P., Humala, A.E. & Priyadarsanan, D.R. (2022) First records of two orthocentrine genera (Hymenoptera: Ichneumonidae) from India with description of two new species. Zootaxa, 5155 (3), 414–422. https://doi.org/10.11646/zootaxa.5155.3.6
- van Rossem, G. (1987) A revision of western Palaearctic Oxytorine genera. Part VI. (Hymenoptera, Ichneumonidae). Tijdschrift voor Entomologie, 130, 49–108.
- Varga, O. (2021) First record of the genus Gnathochorisis Förster, 1869 (Hymenoptera: Ichneumonidae: Orthocentrinae) from the Afrotropical region, with descriptions of two new species from Kenya. Zootaxa, 5052 (3), 441–446. https://doi.org/10.11646/zootaxa.5052.3.9
- Varga, O. (2023) One sample—three new species: an example of species richness of the genus Symplecis Förster, 1869 (Hymenoptera, Ichneumonidae: Orthocentrinae) in Burundi. Zootaxa, 5311 (2), 289–296. https://doi.org/10.11646/zootaxa.5311.2.8
- Watanabe, K. (2020) Review of the genus Gnathochorisis Förster, 1869 (Hymenoptera: Ichneumonidae: Orthocentrinae) from Japan, with description a new species. Japanese Journal of Systematic Entomology, 26 (1), 48–52.
- Yu, D.S., van Achterberg, C. & Horstmann, K. (2016) World Ichneumonoidea (2015). Taxonomy, biology, morphology and distribution. Nepean, Ottawa. [Taxapad interactive catalogue database on flash-drive]