Discovery of epizoic algae on semiaquatic weevils Bagous tubulus Caldara et O’Brien, 1994 (Coleoptera: Curculionidae) in Europe




algal mats, epizoic flora, symbiosis, commensalism, beetles, Chlorophyta


During examination of Bagous tubulus Caldara et O’Brien, 1994 series collected in Lviv Region of Ukraine the epizoic algae were detected. Small- and medium-sized green spots are constrained to the dorsal and lateral surfaces of pronotum, elytra, and femora of beetles. We assume that succidations, microstructure of scales along with semiaquatic way of life provides optimal substrate for growth of algal mats. It is still unclear how algal mats affect beetle life or properties of scales and coating. Taxonomic composition of those mats is unknown yet. According to available data on epizoic organisms, we presume that it may be the species of Ulvophyceae, Chlorophyceae, and/or Cyanobacteria. 1 fig., 17 refs.


Fayolle, S., Moriconi, C., Oursel, B., Koenig, C., Suet, M., Ficheux, S., Logez, M., Olivier A. 2016. Epizoic algae distribution on the carapace and plastron of the European pond turtle (Emys orbicularis Linnaeus, 1758): A study from the Camargue, France. Cryptogamie, Algologie, 37(4), 221–232. DOI:

Gradstein, S. R., Equihua, C. 1995. An epizoic bryophyte and algae growing on the lizard Corythophanes cristatus in Mexican rain forest. Biotropica, 27(2), 265–268. DOI:

Gradstein, S. R., Vitt, D. H., Anderson, R. S. 1984. The epizoic occurrence of Daltonia angustifolia (Musci) in Papua New Guinea. Cryptogamie, Bryologie-Lichénologie, 5(1–2), 47–50. URL:

Gressitt, J. L. 1966a. Epizoic symbiosis: The Papuan weevil genus Gymnopholus (Leptopiinae) symbiotic with cryptogamic plants, oribatid mites, rotifers and nematodes. Pacific Insects, 8(1), 221–280. URL:

Gressitt, J. L. 1966b. The weevil genus Pantorhytes (Coleoptera), involving cacao pests and epizoic symbiosis with cryptogamic plants and microfauna. Pacific Insects, 8(4), 915–965. URL:

Gressitt, J. L. 1977. Papuan weevil genus Gymnopholus: Third supplement and further studies in epizoic symbiosis. Pacific Insects, 17(2–3), 179–195. URL:

Gressitt, J. L., Samuelson, G. A., Vitt, D. H. 1968. Moss growing on living Papuan moss-forest weevils. Nature, 217(5130), 765–767. DOI:

Gressitt, J. L., Sedlacek, J. 1967. Papuan weevil genus Gymnopholus: Supplement and further studies in epizoic symbiosis. Pacific Insects, 9(3), 481–500. URL:

Gressitt, J. L., Sedlacek, J. 1970. Papuan weevil genus Gymnopholus: second supplement with studies in epizoic symbiosis. Pacific Insects, 12(4), 753–762. URL:

Jolivet, P. 1998. Interrelationship Between Insects and Plants. CRC Press, Boca Raton, FL, USA, 1–336. DOI:

Leliaert, F., Tronholm, A., Lemieux, C., Turmel, M., DePriest, M. S., Bhattacharya, D. K., Kenneth, G., Fredericq, S., Zechman, F. W., Lopez-Bautista, J. M. 2016. Chloroplast phylogenomic analyses reveal the deepest-branching lineage of the Chlorophyta, Palmophyllophyceae class. nov. Scientific Reports, 6(1), 25367. DOI:

Machado, G., Vital, D. M. 2001. Occurrence of epizoic cyanobacteria and liverworts on a Neotropical harvestman (Arachnida: Opiliones). Biotropica, 33(3), 535–538. DOI:

Martínez-Torres, S. D., Flórez Daza, Á. E., Linares-Castillo, E. L. 2011. Meeting between kingdoms: Discovery of a close association between Diplopoda and Bryophyta in a transitional Andean-Pacific forest in Colombia.. International Journal of Myriapodology, 6: Proceedings of the 15th International Congress of Myriapodology (Brisbane, Australia, 18–22 July 2011), 29–36. DOI:

O’Brien, C. W., Askevold I. S. 1992. Systematics and evolution of weevils of the genus Bagous Germar (Coleoptera: Curculionidae), I. Species of Australia. Transactions of the American Entomological Society, 118(4), 331–452. URL:

Riedel, A., Kilmaskossu, A. 2017. Revision of the subgenus Niphetoscapha Heller of Gymnopholus Heller (Coleoptera, Curculionoidea, Entiminae, Eupholini) and a new species with epizoic symbiosis from West New Guinea. Zootaxa, 4254(3), 339–356. DOI:

Suutari, M., Majaneva, M., Fewer, D. P., Voirin, B., Aiello, A., Friedl, T., Chiarello, A. G., Blomster, J. 2010. Molecular evidence for a diverse green algal community growing in the hair of sloths and a specific association with Trichophilus welckeri (Chlorophyta, Ulvophyceae). BMC Evolutionary Biology, 10, 86. DOI:

Young, V. A., Moore, M. K., Townsend, V. R., Jr. 2018. Epizoic cyanobacteria associated with harvestmen (Arachnida: Opiliones) from Tobago, West Indies. Living World: Journal of the Trinidad and Tobago Field Naturalists’ Club, 2018, 94–98.







How to Cite

“Discovery of epizoic algae on semiaquatic weevils Bagous tubulus Caldara et O’Brien, 1994 (Coleoptera: Curculionidae) in Europe” (2020) The Kharkov Entomological Society Gazette, 28(2), pp. 29–31. doi:10.36016/KhESG-2020-28-2-3.

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