Mites comprise a highly diverse component of tropical agroecosystems, and phytophagous and predatory species play essential roles in crop health and the ecological balance. Despite their ecological and economic importance, the acarofauna of the Republic of the Congo (RC) remains unclear. This study provides the first comprehensive synthesis of plant-inhabiting mites reported in the country between 1980 and 2025. A narrative bibliographic review was conducted across three major databases (PubMed, Semantic Scholar, and Web of Science) using keywords related to Phytoseiidae, Tetranychidae, host plants and biodiversity. Ten publications met the inclusion criteria and corresponded to field and laboratory studies conducted in southern Congo, mainly around Brazzaville. In total, 22 mite species were identified, including 10 from Phytoseiidae and 12 from Tetranychidae, primarily associated with cassava (Manihot esculenta), okra, tomato, pepper, and eggplant. Euseius fustis and Amblyseius sundi were the most frequently recorded predatory mites, whereas Mononychellus progresivus and Oligonychus gossypii were the predominant phytophagous mites. Recent studies have incorporated molecular tools (12S rRNA and Internal Transcribed Spacer gene sequences), indicating a methodological transition toward integrative taxonomy. The occurrence of Eutetranychus orientalis on cassava is the first record of this species in the RC. Overall, acarological research in the country remains fragmented and geographically restricted. This review highlights the need to expand mite inventories, strengthen the use of molecular approaches, and promote coordinated national programmes dedicated to acarological biodiversity and sustainable pest management.
References
[1]
Krantz, G.W. and Walter, D.E. (2009) A Manual of Acarology. Texas Tech University Press.
[2]
Mcmurtry, J.A., Moraes, G.J.D. and Sourassou, N.F. (2013) Revision of the Lifestyles of Phytoseiid Mites (Acari: Phytoseiidae) and Implications for Biological Control Strategies. Systematic and Applied Acarology, 18, 297-320. https://doi.org/10.11158/saa.18.4.1
[3]
McMurtry, J.A. and Croft, B.A. (1997) Life-Styles of Phytoseiid Mites and Their Roles in Biological Control. Annual Review of Entomology, 42, 291-321. https://doi.org/10.1146/annurev.ento.42.1.291
[4]
Tixier, M. (2018) Predatory Mites (Acari: Phytoseiidae) in Agro-Ecosystems and Conservation Biological Control: A Review and Explorative Approach for Forecasting Plant-Predatory Mite Interactions and Mite Dispersal. Frontiers in Ecology and Evolution, 6, Article ID: 192. https://doi.org/10.3389/fevo.2018.00192
[5]
Bolland, H.R., Gutierrez, J. and Flechtmann, C.H.W. (1998) World Catalogue of the Spider Mite Family (Acari: Tetranychidae). Brill Academic Publishers.
[6]
De Moraes, G.J., Mcmurtry, J.A., Denmark, H.A. and Campos, C.B. (2004) A Revised Catalog of the Mite Family Phytoseiidae. Zootaxa, 434, 1-494. https://doi.org/10.11646/zootaxa.434.1.1
[7]
Yaninek, S. and Hanna, R. (2003) Cassava Green Mite in Africa—A Unique Example of Successful Classical Biological Control of a Mite Pest on a Continental Scale. In: Neuenschwander, P., Borgemeister, C. and Langewald, J., Eds., Biological Control in IPM Systems in Africa, CAB International, Wallingford, 61-75. https://doi.org/10.1079/9780851996394.0061
[8]
Gutierrez, J. and Bonato, O. (1994) Les acariens tetranychidae attaquant le manioc au Congo et quelques-uns de leurs prédateurs. Revue Zoologique Africaine, 108, 191-200.
[9]
Navajas, M., Gutierrez, J., Bonato, O., Bolland, H.R. and Mapangou-Divassa, S. (1994) Intraspecific Diversity of the Cassava Green Mite Mononychellus Progresivus (Acari: Tetranychidae) Using Comparisons of Mitochondrial and Nuclear Ribosomal DNA Sequences and Cross-Breeding. Experimental and Applied Acarology, 18, 351-360. https://doi.org/10.1007/bf00116316
[10]
de Moraes, G.J., Zannou, I.D., Oliveira, A.R., Yaninek, J.S. and Hanna, R. (2006) Phytoseiid Mites of the Subtribes Typhlodromalina and Euseiina (Acari: Phytoseiidae: Euseiini) from Sub-Saharan Africa. Zootaxa, 1114, 1-52. https://doi.org/10.11646/zootaxa.1114.1.1
[11]
Okassa, M.B.M., Ntabi, D.M. and Lenga, A. (2020) Morphological and Molecular Identification of Specimens in the Genus Euseius (Acari: Phytoseiidae) from the Republic of Congo. Zootaxa, 4768, 479-498. https://doi.org/10.11646/zootaxa.4768.4.2
[12]
de Moraes, G.J., Ueckermann, E.A., Oliveira, A.R. and Yaninek, J.S. (2001) Phytoseiid Mites of the Genus Euseius (Acari: Phytoseiidae) from Sub-Saharan Africa. Zootaxa, 3, 1-70. https://doi.org/10.11646/zootaxa.3.1.1
[13]
de Moraes, G.J., Zannou, I.D., Ueckermann, E.A., Oliveira, A.R., Yaninek, J.S. and Hanna, R. (2007) Phytoseiid Mites of the Tribes Afroseiulini, Kampimodromini and Phytoseiulini, and Complementary Notes on Mites of the Tribes Euseiini and Neoseiulini (Acari: Phytoseiidae) from Sub-Saharan Africa. Zootaxa, 1628, 1-22. https://doi.org/10.11646/zootaxa.1628.1.1
[14]
Bonato, O., Mapangou-Divassa, S. and Gutierrez, J. (1995) Influence of Relative Humidity on Life-History Parameters of Mononychellus Progresivus and Oligonychus Gossypii (Acari: Tetranychidae). Environmental Entomology, 24, 841-845. https://doi.org/10.1093/ee/24.4.841
[15]
Bonato, O., Baumg?Rtner, J. and Gutierrez, J. (1995) Sampling Plans for Mononychellus Progresivus and Oligonychus Gossypii (Acari: Tetranychidae) on Cassava in Mrica. Journal of Economic Entomology, 88, 1296-1300. https://doi.org/10.1093/jee/88.5.1296
[16]
Bonato, O., Baumgartner, J. and Gutierrez, J. (1994) Impact of Mononychellus progresivus and Oligonychus gossypii (Acari: Tetranychidae) on Cassava Growth and Yield in Central Africa. Journal of Horticultural Science, 69, 1089-1094. https://doi.org/10.1080/00221589.1994.11516549
[17]
Okassa, M.B.M., Louzeymo, J.b., Bikouta, G.N. and Lenga, A. (2025) Diversité des acariens ravageurs de la famille des Tetranychidae présents sur Manihot esculenta dans la commune de Brazzaville: état des lieux et perspectives. Revue Africaine d’Environnement et d’Agriculture, 7, 136-142. https://doi.org/10.4314/rafea.v7i4.14
[18]
Tetranychus evansi (TETREV)[Congo]. EPPO Global Database. https://gd.eppo.int/taxon/TETREV/distribution/CG
[19]
Migeon, A. (2015) The Jean Gutierrez Spider Mite Collection. ZooKeys, 489, 15-24. https://doi.org/10.3897/zookeys.489.9292
[20]
Demite, P.R., Mcmurtry, J.A. and de Moraes, G.J. (2014) Phytoseiidae Database: A Website for Taxonomic and Distributional Information on Phytoseiid Mites (Acari). Zootaxa, 3795, 571-577. https://doi.org/10.11646/zootaxa.3795.5.6
[21]
de Moraes, G.J., McMurtry, J.A. and Yaninek, J.S. (1989) Some Phytoseiid Mites (Acari: Phytoseiidae) from Tropical Africa with Description of a New Species. International Journal of Acarology, 15, 95-102. https://doi.org/10.1080/01647958908683830
[22]
Okassa, M.B.M., Dibangou, V., Bikouta, G.N., Ntabi, D.M. and Lenga, A. (2022) Brief Inventory of Phytoseiidae (Parasitiformes) Found on Vegetable Crops in the Republic of Congo. Journal of Zoological Research, 4, 1-8.
[23]
Hebert, P.D.N., Cywinska, A., Ball, S.L. and deWaard, J.R. (2003) Biological Identifications through DNA Barcodes. Proceedings of the Royal Society of London. Series B: Biological Sciences, 270, 313-321. https://doi.org/10.1098/rspb.2002.2218
[24]
Okassa, M., Tixier, M.-S., Cheval, B. and Kreiter, S. (2009) Molecular and Morphological Evidence for a New Species Status within the Genus Euseius (Acari: Phytoseiidae). Canadian Journal of Zoology, 87, 689-698. https://doi.org/10.1139/z09-057
[25]
Okassa, M., Kreiter, S., Guichou, S. and Tixier, M. (2011) Molecular and Morphological Boundaries of the Predatory Mite Neoseiulus californicus (Mcgregor) (Acari: Phytoseiidae). Biological Journal of the Linnean Society, 104, 393-406. https://doi.org/10.1111/j.1095-8312.2011.01717.x
[26]
Okassa, M., Kreiter, S. and Tixier, M.-S. (2012) Obtaining Molecular Data for All Life Stages of Typhlodromus (Typhlodromus) exhilaratus (Mesostigmata: Phytoseiidae): Consequences for Species Identification. Experimental and Applied Acarology, 57, 105-116. https://doi.org/10.1007/s10493-012-9548-7
[27]
Marie‐Stephane, T., Mireille, O. and Serge, K. (2011) An Integrative Morphological and Molecular Diagnostics for Typhlodromus pyri (Acari: Phytoseiidae). Zoologica Scripta, 41, 68-78. https://doi.org/10.1111/j.1463-6409.2011.00504.x
[28]
Young, M.R., deWaard, J.R. and Hebert, P.D.N. (2021) DNA Barcodes Enable Higher Taxonomic Assignments in the Acari. Scientific Reports, 11, Article No. 15922. https://doi.org/10.1038/s41598-021-95147-8
[29]
Zhou, Y., Trujillo-González, A., Nicol, S., Huerlimann, R., Sarre, S.D. and Gleeson, D. (2025) Evaluation of DNA Barcoding Reference Databases for Marine Species in the Western and Central Pacific Ocean. PeerJ, 13, e19674. https://doi.org/10.7717/peerj.19674
[30]
Le Cadre, J., Klemp, F.L., Bálint, M., Scheu, S. and Schaefer, I. (2024) Applicability and Perspectives for DNA Barcoding of Soil Invertebrates. PeerJ, 12, e17709. https://doi.org/10.7717/peerj.17709
[31]
Ratnasingham, S. and Hebert, P.D.N. (2007) Bold: The Barcode of Life Data System (http://www.barcodinglife.org). Molecular Ecology Notes, 7, 355-364. https://doi.org/10.1111/j.1471-8286.2007.01678.x
[32]
Sayers, E.W., Cavanaugh, M., Clark, K., Pruitt, K.D., Sherry, S.T., Yankie, L., et al. (2022) GenBank 2023 Update. Nucleic Acids Research, 51, D141-D144. https://doi.org/10.1093/nar/gkac1012
