Incidence of the invasive citron bug Leptoglossus gonagra (Fabricius) (Hemiptera: Heteroptera) in Vietnam and first teratological case for the species


Published: Feb 1, 2026
Keywords:
Coreidae Coreinae Faunistics Teratology
Eduardo Faundez
Abstract

First formal records of the citron bug Leptoglossus gonagra (Fabricius, 1755) for Vietnam are provided. In addition, the first teratological case for L. gonagra is presented, belonging to an unilateral simple oligomery in the mesothoracic leg. The new record and the teratosis are commented on and discussed.

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References
Balazuc, J. 1951. La tératologie des Hémiptères et groupes voisins. Ann. Soc. Entomol. Fr. 120: 17–66,
Brailovsky, H. 2014. Illustrated key for identification of the species included in the genus Leptoglossus (Hemiptera: Heteroptera: Coreidae: Coreinae: Anisoscelini), and descriptions of five new species and new synonyms. Zootaxa. 3794(1): 143–178. http://dx.doi.org/10.11646/zootaxa.3794.1.7
Brailovsky, H., and van der Heyden, T. 2019. New distributional notes and key to the known species of Leptoglossus Guérin-Méneville from Guatemala (Heteroptera: Coreidae: Coreinae: Anisoscelini). Rev. Chil. Entomol. 45(1): 175–180.
Dammer, K. H., and Ravelo, H. G. 1990. Verseuchung von Leptoglossus gonagra (Fabr.) mit Nematospora coryli Peglion und Ashbya gossypii (Ashby et Nowell) Guilliermond in einer zitrusanlage der Republik Kuba. Arch. Phytopath, Plant. 26(1): 71–78.
Faúndez, E.I. 2025. Citron bug in Vietnam. iNaturalist project. https://www.inaturalist.org/projects/citron-bug-in-vietnam (accessed 9/16/2025).
Faúndez, E.I., Carvajal, M.A., and Villablanca, J. 2020. Alien invasion: The case of the Western Conifer-Seed bug (Heteroptera: Coreidae) in Chile, overreaction, and misidentifications. J. Med. Entomol. 57(1): 297-303. https://doi.org/10.1093/jme/tjz127
Lee, H., Kim, M.J., Bae, Y.S., and Kim, D.E. 2020. New occurrence of the invasive alien leaf‐footed bug Leptoglossus gonagra (Hemiptera: Coreidae) in South Korea. Entomol. Res. 50(1): 14–22. https://doi.org/10.1111/1748-5967.12402
Lüscher, M. 1948. The regeneration of legs in Rhodnius prolixus (Hemiptera). J.Exp. Biol. 25(4): 334–343.
Maes, J.M. and Göllner-Scheiding, U. 1993 Catalogo de los Coreoidea (Heteroptera) de Nicaragua. Rev. Nic. Entomol. 25: 1–19.
Rocca, J.R., and Faúndez, E.I. 2017. Descripción de dos casos teratológicos en Leptoglossus concaviusculus Berg, 1892 (Heteroptera: Coreidae) de la Provincia de Río Negro, Argentina. An. Inst. Patagon. 45(2): 97–100. https://dx.doi.org/10.4067/S0718-686X2017000200097
Štusak, J.M., and Stehlik, J.L. 1979. Third contribution to the teratology of Tingidae (Heteroptera) Anomalies of legs. Acta. Mus. Moraviae. Sci. Biol. 64: 75–84.