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Issue: Vol. 5318 No. 4: 21 Jul. 2023
Type: Article
Published: 2023-07-21
DOI: 10.11646/zootaxa.5318.4.2
Page range: 474-488
Abstract views: 226
PDF downloaded: 20

Revision of Megalothorax incertus Börner, 1903 reveals it to be another widespread Palearctic species of the genus (Collembola, Neelidae)

Abteilung Bodenzoologie; Senckenberg Gesellschaft für Naturforschung; 02826 Görlitz; Germany
Moscow State Pedagogical University; Kibalchicha str.; 6; korp. 3; Moscow; 129278; Russia
Collembola Megalothorax incertus M. boerneri M. perspicillum M. minimus M. willemi Neelipleona springtails Sicily Russia France

Abstract

Megalothorax incertus Börner, 1903 is the second species of Megalothorax to have been discovered. The brevity of the original description left the species insufficiently defined.

In this work, we redescribe M. incertus from topotypes (Sicily) and describe a new species of the incertus-group: M. boerneri sp. nov. (France). We report the presence of M. incertus sensu nov. in France and Russia and validate a previous record from China based on molecular data. New records are also provided for a third species of the incertus-group, M. perspicillum Schneider & D’Haese, 2013. Novel DNA data (28S rDNA, 16S rDNA, COI) are provided for the three species. The interactive key of the Megalothorax species of the world is updated.

The three species are distinguished on subtle morphological characteristics and are found to be well-separated on the molecular based phylogenetic tree.

Megalothorax incertus sensu nov. joins M. perspicillum, M. minimus Willem, 1900 and M. willemi Schneider & D’Haese, 2013 in the club of widespread Megalothorax species in the Palearctic, and can be found in co-occurrence with them. Thus, the ecological distinction between those species remains unprecise.

 

References

  1. Bendjaballah, M., Zoughailech, A., Brahim-Bounab, H., Hamra-Kroua, S., Bedos, A. & Deharveng, L. (2018) Annotated checklist of the springtails (Hexapoda: Collembola) of the Collo massif, northeastern Algeria. Zoosystema, 40 (16), 389–414. https://doi.org/10.5252/zoosystema2018v40a16 DOI: https://doi.org/10.5252/zoosystema2018v40a16
  2. Börner, C. (1903) Neue altweltliche Collembolen, nebst Bemerkungen zur Systematik der Isotominen und Entomobryien. Sitzungs-Berichte der Gesellschaft Naturforschender Freunde zu Berlin, 1903, 129–182. https://doi.org/10.5962/bhl.part.29866 DOI: https://doi.org/10.5962/bhl.part.29866
  3. Christiansen, K.A. & Bellinger, P.F. (1992) Insects of Hawaii. Volume 15. Collembola. University of Hawaii Press, Honolulu, pp. 1–445.
  4. Ferrı́n, M., Peñuelas, J., Gargallo-Garriga, A., Iribar, A., Janssens, I.A., Marañón-Jiménez, S., Murienne, J., Richter, A., Sigurdsson, B.D. & Peguero, G. (2023) Responses of soil hexapod communities to warming are mediated by microbial carbon and nitrogen in a subarctic grassland. European Journal of Soil Biology, 117, 103513. https://doi.org/10.1016/j.ejsobi.2023.103513 DOI: https://doi.org/10.1016/j.ejsobi.2023.103513
  5. Kahrarian, M. (2019) The checklist of Collembola (Hexapoda, Arthropoda) from west of Iran. Journal of Insect Biodiversity and Systematics, 5 (1), 33–46. https://doi.org/10.52547/jibs.5.1.33 DOI: https://doi.org/10.52547/jibs.5.1.33
  6. Ma, Y., Huang, C.-W., Luan, Y.-X. & Chen, W.-J. (2021) The mitochondrial genome of a minute springtail species Megalothorax incertus (Collembola: Neelipleona: Neelidae). Mitochondrial DNA, Part B, 6 (8), 2430–2432. https://doi.org/10.1080/23802359.2021.1955637 DOI: https://doi.org/10.1080/23802359.2021.1955637
  7. Maynard, E.A. (1951) A Monograph of the Collembola, or Springtail Insects of New York state. Comstock Publishing Company, Inc., Ithaca, New York, pp. 1–339.
  8. Minh, B.Q., Schmidt, H.A., Chernomor, O., Schrempf, D., Woodhams, M.D., von Haeseler, A. & Lanfear, R. (2020) IQ-TREE 2: New Models and Efficient Methods for Phylogenetic Inference in the Genomic Era. Molecular Biology and Evolution, 37 (5), 1530–1534. https://doi.org/10.1093/molbev/msaa015 DOI: https://doi.org/10.1093/molbev/msaa015
  9. Panina, K., Babenko, A. & Potapov, M. (2022) Two new « nosed » species of the genus Megalothorax (Collembola: Neelidae) from Russia. Zootaxa, 5188 (4), 383–395. https://doi.org/10.11646/zootaxa.5188.4.6 DOI: https://doi.org/10.11646/zootaxa.5188.4.6
  10. Papáč, V. & Kováč, Ľ. (2013) Four new troglobiotic species of the genus Megalothorax Willem, 1900 (Collembola: Neelipleona) from the Carpathian Mountains (Slovakia, Romania). Zootaxa, 3737 (5), 545–575. https://doi.org/10.11646/zootaxa.3737.5.3 DOI: https://doi.org/10.11646/zootaxa.3737.5.3
  11. Papáč, V., Raschmanová, N. & Kováč, Ľ. (2019) New species of the genus Megalothorax Willem, 1900 (Collembola: Neelipleona) from a superficial subterranean habitat at Dobšinská Ice Cave, Slovakia. Zootaxa, 4648 (1), 165–177. https://doi.org/10.11646/zootaxa.4648.1.9 DOI: https://doi.org/10.11646/zootaxa.4648.1.9
  12. Schneider, C. (2022) Open key of the Megalothorax species of the world (Collembola: Neelidae) (v1.0.0). Zenodo. https://doi.org/10.5281/zenodo.7341417
  13. Schneider, C. & D’Haese, C.A. (2013) Morphological and molecular insights on Megalothorax: the largest Neelipleona genus revisited (Collembola). Invertebrate Systematics, 27 (3), 317–364. https://doi.org/10.1071/IS13002 DOI: https://doi.org/10.1071/IS13002
  14. Schneider, C., Minor, M.A. & D’Haese, C.A. (2023) A new group of species of the genus Megalothorax (Collembola, Neelidae) with Gondwanan distribution, and introducing an open interactive identification key of Megalothorax species. Zootaxa, 5228 (2), 101–121. https://doi.org/10.11646/zootaxa.5228.2.1 DOI: https://doi.org/10.11646/zootaxa.5228.2.1
  15. Schneider, C., Porco, D. & Deharveng, L. (2016) Two new Megalothorax species of the minimus group (Collembola, Neelidae). ZooKeys, 554, 37–68. https://doi.org/10.3897/zookeys.554.6069 DOI: https://doi.org/10.3897/zookeys.554.6069
  16. Schneider, C., Zon, S.D. & D'Haese, C.A. (2018) Megalothorax laevis (Neelipleona, Neelidae): Account of a neglected springtail widely distributed in the intertropical zone. International Journal of Tropical Insect Science, 38 (3), 168–191. https://doi.org/10.1017/S1742758418000024 DOI: https://doi.org/10.1017/S1742758418000024
  17. Stach, J. (1960) Materialen zur kenntis der collembolen fauna Afghanistans. Acta zoologica cracoviensia, 5 (12), 507–581.
  18. Willem, V. (1900) Un type nouveaux des Smynthuridae: Megalothorax. Annales de la Société Entomologique de Belgique, 44, 7–10.
  19. Yoosefi Lafooraki, E. & Shayanmehr, M. (2014) New records of Neelipleona for the Iranian springtail fauna (Collembola). Natura Somogyiensis, 24, 25–30. https://doi.org/10.24394/NatSom.2014.24.25 DOI: https://doi.org/10.24394/NatSom.2014.24.25