Abstract
The Neotropical genus Ephydrolithus Girón & Short, 2019 was recently established based on five species. In 2022 five additional species were described, all of them from the Espinhaço Mountain Range, in the states of Minas Gerais and Bahia, Brazil. During an aquatic insect survey in three states in the Northeast region of Brazil, we collected two new species of Ephydrolithus in the states of Bahia, Ceará and Pernambuco, one of the new species collected in the two latter states, represent the first record of this genus outside the Espinhaço Mountain Range, expanding its distribution to other Brazilian states. The objective of this study is to describe two new species of Ephydrolithus based on both male and female specimens. We also provide an updated identification key and distributional maps for the genus.
References
- Alencar, J., Short, A. & Hamada, N. (2022a) New species and new distributional records of the hygropetric water scavenger beetle genus Oocyclus Sharp (Coleoptera, Hydrophilidae) from the Brazilian Shield. Zootaxa, 5087 (2), 275–305. https://doi.org/10.11646/zootaxa.5087.2.3
- Alencar, J., Serra, M., Short, A. & Hamada, N. (2022b) New species and new distributional records of the hygropetric water scavenger beetle genus Ephydrolithus Girón & Short (Coleoptera: Hydrophilidae) from the Brazilian Shield. Canadian Journal of Zoology, 100 (12), 810–825. https://doi.org/10.1139/cjz-2022-0058
- Campos, L., Freire Moro, M., Funk, V. & Roque, N. (2019) Biogeographical review of Asteraceae in the Espinhaço Mountain range, Brazil. The Botanical Review, (85) 293–336. https://doi.org/10.1007/s12229-019-09216-9
- Clarkson, B. & Short, A. (2012) Revision of the Oocyclus Sharp of Brazil with description of ten new species (Coleoptera: Hydrophilidae: Laccobiini). Zootaxa, 3183 (1), 1–35. https://doi.org/10.11646/zootaxa.3183.1.1
- Girón, J. & Short, A. (2019) Three additional new genera of acidocerine water scavenger beetles from the Guiana and Brazilian Shield regions of South America (Coleoptera, Hydrophilidae, Acidocerinae). ZooKeys, 855, 109. https://doi.org/10.3897/zookeys.855.33013
- Girón, J. & Short, A. (2021a) Review of the Neotropical water scavenger beetle genus Tobochares Short & García, 2007 (Coleoptera, Hydrophilidae, Acidocerinae): new lineages, new species, and new records. ZooKeys, 1019, 93. https://doi.org/10.3897/zookeys.1019.59881
- Girón, J. & Short, A. (2021b) The Acidocerinae (Coleoptera, Hydrophilidae): Taxonomy, classification, and catalog of species. ZooKeys, 1045, 1–236. https://doi.org/10.3897/zookeys.1045.63810
- Hansen, M. (1991) The hydrophiloid beetles. Phylogeny, classification and a revision of the genera (Coleoptera: Hydrophilidae). Biologiske Skrifter, 40, 1–367.
- Kawada, R. & Buffington, L. (2016) A scalable and modular dome illumination system for scientific microphotography on a budget. PLoS ONE, 11 (5), 1–20. https://doi.org/10.1371/journal.pone.0153426
- Lawrence, J. & Ślipiński, A. (2013) Australian Beetles: Morphology, classification and keys. CSIRO Publishing, Melbourne, 576 pp. https://doi.org/10.1071/9780643097292
- Minoshima, Y., Komarek, A. & Ohara, M. (2015) A revision of Megagraphydrus Hansen (Coleoptera, Hydrophilidae): synonymization with Agraphydrus Régimbart and description of seven new species. Zootaxa, 3930 (1), 1–63. https://doi.org/10.11646/zootaxa.3930.1.1
- Richmond, E. (1931) The external morphology of Hydrophilus obtusatus Say (Coleoptera: Hydrophilidae). Journal of the New York Entomological Society, 39 (2), 191–251.
- Sampaio, B. & Short, A. (2018) Families Hydroscaphidae and Torridincolidae. In: Hamada, N., Thorp, J.H. & Rogers, D.C. (Eds.), Keys to Neotropical Hexapoda. Vol. 3. Thorp and Covich’s Freshwater Invertebrates. Academic Press, London, pp. 519–525. https://doi.org/10.1016/B978-0-12-804223-6.00022-6
- Santana, L., Short, A., Benetti, C. & Hamada, N. (2023a) New species and new distributional records of the hygropetric water scavenger beetle genus Oocyclus Sharp (Coleoptera: Hydrophilidae) from the Guiana Shield. Zootaxa, 5230 (5), 587–594. https://doi.org/10.11646/zootaxa.5230.5.6
- Santana, D., Ragalzi, E., Koroiva, R., Mângia, S., Ceron, K., Leite, F. & Shepard, D. (2023b) Lineage diversification of the Sky Island treefrog Scinax curicica (Anura, Hylidae) in the Espinhaço Mountain Range. Biological Journal of the Linnean Society, blad125. https://doi.org/10.1093/biolinnean/blad125
- Short, A. & Perkins, P. (2004) A revision of Oocyclus Sharp of Mexico and Central America (Coleoptera: Hydrophilidae). Zootaxa, 783 (1), 1–45. https://doi.org/10.11646/zootaxa.783.1.1
- Sket, B. (2004) The cave hygropetric-a little known habitat and its inhabitants. Archiv für Hydrobiologie, 160 (No. 3), 413–425. https://doi.org/10.1127/0003-9136/2004/0160-0413
- UNESCO (2023) Espinhaço Range Biosphere Reserve, Brazil. Available from: https://www.unesco.org/en/mab/espinhaco-range/ (accessed 11 September 2023)