Species Haplonyx spencei Gyllenhal, 1836

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• Haplonyx spencei Schoenherr, C.J. 1836. Genera et species curculionidum, cum synonymia hujus familiae. Species novae aut hactenus minus cognitae, descriptionibus a Dom. Leonardo Gyllenhal, C.H. Boheman, et entomologis aliis illustratae. Paris : Roret Vol. 3(2) pp. 506-858. [607].
• Cionus ferrugatus Blanchard, C.E. 1853. Description des Insectes. pp. 1-422 in Hombron, J.B. & Jacquinot, H. (eds). Voyage au Pôle Sud et dans l'Océanie sur les Corvettes l'Astrolabe et la Zélée; exécuté par ordre du Roi pendant les années 1837–1840. Zoologie. Paris : Gide & Baudry Vol. 4. [255; pl. 14 fig. 13] [subjective synonym].
• Haplonyx scolopax Pascoe, F.P. 1870. Contributions towards a knowledge of the Curculionidae. Journal of the Linnean Society of London, Zoology 10: 434-493, pls 17-19 [490] [subjective synonym].

Taxonomic Decision for Synonymy

• Chevrolat, L.A.A. 1879. Diagnoses d'espèces nouvelles d'Haplonyx. Le Naturaliste 1: 30-31, 38, 54-55, 60 [30] (for Cionus ferrugatus)
• Lea, A.M. 1918. Notes on some miscellaneous Coleoptera, with descriptions of new species. Part IV. Transactions of the Royal Society of South Australia 42: 240-275, pls XXX-XXXII [Date published 24 Dec. 1918] [270] (for H. scolopax)

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