Molecular phylogeny and historical biogeography of Apicotermitinae (Blattodea: Termitidae)
Soil‐feeding termites are abundant in tropical regions and play an important role in soil bioturbation and in the organic matter cycle. The Apicotermitinae are arguably the most diverse lineage of soil‐feeding termites, but they are also the most understudied, probably because many species are soldierless, which makes identification difficult. Although the backbone of the termite phylogenetic tree is now well‐resolved, the relationships among representatives of Apicotermitinae are still largely unknown. Here, we present phylogenetic trees inferred from 113 mitochondrial genomes of Apicotermitinae representative of the group diversity. Our analyses confirm the monophyly of the Apicotermitinae and the basal position of soldiered taxa, within which two lineages of soldierless species are nested. We describe two new monotypic genera, whose phylogenetic position appeared of special interest:
Koutabatermes
gen. n.
, lies on a long branch among soldiered taxa, and
Apolemotermes
gen. n.
, is sister to
Adaiphrotermes
. We resolved, with high support, the position of Asian genera as sister group of a clade comprising the monophyletic neotropical
Anoplotermes
‐group and the small African clade including
Adaiphrotermes
and
Apolemotermes
gen. n.
. Our trees cast light on the intergeneric and interspecific relationships within Apicotermitinae and reveal the polyphyly of several genera, including
Ruptitermes
,
Astalotermes
and
Anoplotermes
. Biogeographic reconstructions revealed two dispersal events out of Africa, one to the Oriental realm and one to the Neotropical realm. Overall, the timing of Apicotermitinae diversification and dispersal, following the Eocene–Oligocene boundary, matches that found for other groups of Neoisoptera. Nomenclatural acts are registered in ZooBank:
http://zoobank.org/urn:lsid:zoobank.org:pub:CA1A21B6‐573E‐4855‐8C88‐372453C922F7
.
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Tiago F. Carrijo, Daniel Castro · 2023
- Published
- Jun 08, 2021
- Vol/Issue
- 46(3)
- Pages
- 741-756
- License
- View
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