Designation of the neotype of Triatoma dimidiata (Latreille, 1811) (Hemiptera, Reduviidae, Triatominae), with full integrated redescription including mitogenome and nuclear ITS-2 sequences
The taxonomic status of Triatoma dimidiata (Latreille, 1811) is, by far, the most discussed within Triatominae. Molecular studies have recovered at least three independently evolving lineages in T. dimidiata across its range. The original description of T. dimidiata (as Reduvius dimidiatus ) include...
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Veröffentlicht in: | ZooKeys 2021-12, Vol.1076, p.9-24 |
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Format: | Artikel |
Sprache: | eng |
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Zusammenfassung: | The taxonomic status of
Triatoma dimidiata
(Latreille, 1811) is, by far, the most discussed within Triatominae. Molecular studies have recovered at least three independently evolving lineages in
T. dimidiata
across its range. The original description of
T. dimidiata
(as
Reduvius dimidiatus
) included few taxonomic characters, and no types were assigned. To define and describe the cryptic diversity within
T. dimidiata
sensu lato (s.l.), a neotype must be designated. For this purpose, all 199 specimens identified as
T. dimidiata
from the collections of the Smithsonian Institution – National Museum of Natural History and the American Museum of Natural History, ranging from Peru to Mexico, were studied. Only one specimen (from Tumbes, Peru) matched the combination of characters as listed in the original description, and it is herein formally designated as the neotype for
T. dimidiata
. The neotype is morphologically described and DNA sequences of its whole mitochondrial genome and the nuclear second internal transcribed spacer region (ITS2), commonly used in triatomine molecular systematics studies, are presented and compared to other publicly available sequences of
T. dimidiata
s.l. in GenBank. Our results suggest that
T. dimidiata
sensu stricto (s.s.) is somewhat rare and, therefore, unlikely to serve as a major vector of Chagas disease. |
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ISSN: | 1313-2989 1313-2970 |
DOI: | 10.3897/zookeys.1076.72835 |