Abstract
Two new species of root mealybugs (Hemiptera: Rhizoecidae) from South America are described and illustrated based on the morphology of the adult females: Coccidella advena Schneider & LaPolla, sp. nov. from Peru and Rhizoecus peripotaro Schneider & LaPolla, sp. nov. from Guyana and Peru. Both species were collected with colonies of Acropyga ants (Hymenoptera: Formicidae) but only R. peripotaro was found to be trophobiotic; C. advena was ignored by the ants and is considered to be free-living. A guide to aid in identification is provided for each species.
References
- Choi, J. & Lee, S. (2022) Higher classification of mealybugs (Hemiptera: Coccomorpha) inferred from molecular phylogeny and their endosymbionts. Systematic Entomology, 47, 354–370. https://doi.org/10.1111/syen.12534
- Ferris, G.F. (1953) Atlas of the Scale Insects of North America, v. 6, The Pseudococcidae (Part II). Stanford University Press, Palo Alto, California, 506 pp.
- García Morales, M., Denno, B.D., Miller, D.R., Miller, G.L., Ben-Dov, Y. & Hardy, N.B. (2016) ScaleNet: a literature-based model of scale insect biology and systematics. Database, 2016, bav118. Accessible at: scalenet.info (accessed on 29 August 2024).
- Hambleton, E.J. (1946) Studies of hypogeic mealybugs. Revista de Entomologia, Rio de Janeiro, 17, 1‒77.
- Hambleton, E.J. (1974) Three new species of Rhizoecus (Homoptera: Pseudococcidae) from New Zealand, with notes and redescription of others. New Zealand Journal of Zoology, 1, 147–158. https://doi.org/10.1080/03014223.1974.9517822
- Hodgson, C.J. (2012) Comparison of the morphology of the adult males of the rhizoecine, phenacoccine and pseudococcine mealybugs (Hemiptera: Sternorrhyncha: Coccoidea), with the recognition of the family Rhizoecidae Williams. Zootaxa, 3291 (1), 1–79. https://doi.org/10.11646/zootaxa.3291.1.1
- Kaydan, M., Konczné Benedicty, Z., Kondo, D., Ramos-Portilla, A.A. & Szita, É. (2018) The genus Coccidella Hambleton (Hemiptera: Rhizoecidae) with description of two new species. Neotropical Entomology, 47, 369–378. https://doi.org/10.1007/s13744-017-0566-3
- Kaydan, M., Konczné Benedicty, Z., Kondo, D., Ramos-Portilla, A.A. & Szita, É. (2019) Investigations on the genus Rhizoecus (Hemiptera: Rhizoecidae) with description of two new species from South America. Neotropical Entomology, 48, 809–821. https://doi.org/10.1007/s13744-019-00681-w
- Kozár, F. & Konczné Benedicty, Z. (2007) Rhizoecinae of the world. Plant Protection Institute, Hungarian Academy of Sciences, Budapest, 617 pp.
- LaPolla, J.S. (2004) Acropyga (Hymenoptera: Formicidae) of the world. Contributions of the American Entomological Institute, 33, 1–130.
- LaPolla, J.S. & Schneider, S.A. (2023) Trophobiosis between a new species of Acropyga (Hymenoptera, Formicidae) and new Neochavesia (Hemiptera, Xenococcidae) from Peru, and establishment of the Acropyga smithii species-group. ZooKeys, 1154, 1–16. https://doi.org/10.3897/zookeys.1154.97578
- Prins, A. (1982) Review of Anoplolepis with reference to male genitalia, and notes on Acropyga (Hymenoptera, Formicidae). Annals of the South African Museum, 89, 215–247.
- Ramos-Portilla, A.A. & Caballero, A. (2016) Rhizoecus colombiensis Ramos & Caballero, a new species of hypogeal mealybug (Hemiptera: Coccomorpha: Rhizoecidae) and a key to the species of Rhizoecus from Colombia. Zootaxa, 4092 (1), 55–68. https://doi.org/10.11646/zootaxa.4092.1.3
- Schneider, S.A. & LaPolla, J.S. (2020) Trophobiosis between a new species of Williamsrhizoecus (Hemiptera: Coccomorpha: Rhizoecidae) and Acropyga silvestrii (Hymenoptera: Formicidae) in Tanzania. Zootaxa, 4853 (2), 283–291. https://doi.org/10.11646/zootaxa.4853.2.9
- Schneider, S.A. & LaPolla, J.S. (2022) A Neotropical complex of Ripersiella species (Hemiptera, Coccomorpha, Rhizoecidae) collected from the nests of Acropyga ants (Hymenoptera, Formicidae). ZooKeys, 1123, 1–30. https://doi.org/10.3897/zookeys.1123.90141
- Schneider, S.A., Sodano, J. & LaPolla, J.S. (2022) Distinguishing symbiotic partners of Acropyga ants from free-living soil inhabitants. Neotropical Entomology, 51, 641–647. https://doi.org/10.1007/s13744-022-00948-9
- Sirisena, U.G.A.I., Watson, G.W., Hemachandra, K.S. & Wijayagunasekara, H.N.P. (2013) A modified technique for the preparation of specimens of Sternorrhyncha for taxonomic studies. Tropical Agricultural Research, 24, 139–149.
- Smith, C.R., Oettler, J., Kay, A. & Deans, C. (2007) First recorded mating flight of the hypogeic ant, Acropyga epedana, with its obligate mutualist mealybug, Rhizoecus colombiensis. Journal of Insect Science, 7, 1–5. https://doi.org/10.1673/031.007.1101
- Sodano, J., Oufiero, C.E., Schneider, S.A. & LaPolla, J.S. (2024) Scale insect (Hemiptera: Coccomorpha) morphology is transformed under trophobiosis. Annals of the Entomological Society of America, 117, 49–63. https://doi.org/10.1093/aesa/saad033
- Tanaka, H. (2016) A new genus and species of Rhizoecidae (Hemiptera, Sternorrhyncha, Coccomorpha) associated with Acropyga yaeyamensis (Hymenoptera, Formicidae, Formicinae). ZooKeys, 616, 115–124. https://doi.org/10.3897/zookeys.616.9442
- Williams, D.J. & Granara de Willink, M.C. (1992) Mealybugs of Central and South America. CAB International, Wallingford, 635 pp.