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Morphology of the larvae of Rhantaticus congestus (Klug, 1833) and phylogenetic comparison with other known Aciliini (Coleoptera: Dytiscidae: Dytiscinae)
Swedish Museum of Natural History, Department of Zoology. (Bergsten Systematic Entomology Lab)ORCID iD: 0000-0002-6153-4431
2023 (English)In: Zootaxa, ISSN 1175-5326, E-ISSN 1175-5334, Vol. 5380, no 3, p. 247-264Article in journal (Refereed) Published
Abstract [en]

We describe the second- and third instar larvae of the diving beetle Rhantaticus congestus (Klug, 1833), including detailed morphometric and chaetotaxic analyses of the cephalic capsule, head appendages, legs, terminal abdominal segment and urogomphi in order to discover useful characters for distinguishing Rhantaticus Sharp, 1882 larvae from those of other known Aciliini (Coleoptera: Dytiscidae: Dytiscinae). A parsimony analysis based on 94 larval characteristics of nine Aciliini species in five genera (Acilius Leach, 1817, Graphoderus Dejean, 1833, Rhantaticus, Sandracottus Sharp, 1882, Thermonectus Dejean, 1833) was conducted using the program TNT. Rhantaticus shares with all these genera several larval character states which support its inclusion in the Aciliini. Whereas Rhantaticus larva stands out from other known genera by several unique character states, our parsimony analysis did not recover any clear phylogenetic position of this genus within the Aciliini.

Place, publisher, year, edition, pages
2023. Vol. 5380, no 3, p. 247-264
Keywords [en]
Coleoptera, Dytiscidae, Eretini, Aubehydrini, Rhantaticus, Madagascar, larvae, morphometry, chaetotaxy, phylogeny
National Category
Biological Systematics
Research subject
Diversity of life
Identifiers
URN: urn:nbn:se:nrm:diva-5438DOI: 10.11646/zootaxa.5380.3.3OAI: oai:DiVA.org:nrm-5438DiVA, id: diva2:1817589
Funder
Swedish Research Council, #2009-3744, #2013-517Available from: 2023-12-06 Created: 2023-12-06 Last updated: 2023-12-07Bibliographically approved

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ALARIE, YVESMICHAT, MARIANO C.Bergsten, JohannesHÁJEK, JIŘÍ
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