TY - JOUR
T1 - Molecular phylogeny and revision of species groups of Nearctic bombardier beetles (Carabidae, Brachininae, Brachinus (Neobrachinus))
AU - Ikagawa, Raine M.
AU - Moore, Wendy
N1 - Funding Information:
It is our pleasure to dedicate this work to Dr. Terry L. Erwin [1940–2020], virtuoso coleopterist, biodiversity explorer, scholar, and gentleman. As a former colleague, men-tor, and friend his enthusiasm for carabid systematics was contagious and his inspira-tion timeless. This work is in partial fulfilment of RI’s Master’s degree in the Graduate Interdisciplinary Program in Entomology and Insect Science (GIDP-EIS) at the University of Arizona (UA) and is a product of the Arizona Sky Island Arthropod Project based in W.M.’s laboratory. We thank those who helped collect specimens in the field including Davide Bergamaschi and Carlos Martinez. A special thanks to Jacob Simon, who contributed to collecting specimens in the field and molecular data acquisition. We also thank Jason Schaller for early advice on how to collect and identify Neobrachi-nus. We thank Daniel Shpeley (University of Alberta) and Evan Waite (Arizona State University) for loans of Brachinus specimens included in our molecular phylogeny. We thank Drs. David Kavanaugh and David Maddison for their insightful comments that improved the quality of the manuscript. Funding for this project came from the UA’s GIDP-EIS, as well as from T&E, Inc. and is gratefully acknowledged.
Funding Information:
It is our pleasure to dedicate this work to Dr. Terry L. Erwin [1940–2020], virtuoso coleopterist, biodiversity explorer, scholar, and gentleman. As a former colleague, mentor, and friend his enthusiasm for carabid systematics was contagious and his inspiration timeless. This work is in partial fulfilment of RI’s Master’s degree in the Graduate Interdisciplinary Program in Entomology and Insect Science (GIDP-EIS) at the University of Arizona (UA) and is a product of the Arizona Sky Island Arthropod Project based in W.M.’s laboratory. We thank those who helped collect specimens in the field including Davide Bergamaschi and Carlos Martinez. A special thanks to Jacob Simon, who contributed to collecting specimens in the field and molecular data acquisition. We also thank Jason Schaller for early advice on how to collect and identify Neobrachi-nus. We thank Daniel Shpeley (University of Alberta) and Evan Waite (Arizona State University) for loans of Brachinus specimens included in our molecular phylogeny. We thank Drs. David Kavanaugh and David Maddison for their insightful comments that improved the quality of the manuscript. Funding for this project came from the UA’s GIDP-EIS, as well as from T&E, Inc. and is gratefully acknowledged.
Publisher Copyright:
© Raine M. Ikagawa & Wendy Moore.
PY - 2022
Y1 - 2022
N2 - Bombardier beetles of the genus Brachinus Weber are notorious for their explosive defensive chemistry. Despite ongoing research on their defense mechanism, life history, and ecology, the group lacks a robust molecular-based phylogeny. In this study, three loci from mitochondrial and nuclear genomes (COI, CAD, 28S) are used to reconstruct the phylogeny of the large subgenus Neobrachinus, and test species group boundaries hypothesized by Erwin (1970) based on morphological characters. Erwin’s fumans species group is found to be polyphyletic, and is herein re-defined with eight new species groups erected to reflect clades based on molecular evidence: the cinctipennis, cyanipennis, galactoderus, gebhardis, mexicanus, phaeocerus, quadripennis, and tenuicollis species groups. Erwin’s cordicollis group is also expanded to include Brachinus (Neobrachinus) medius and the americanus group.
AB - Bombardier beetles of the genus Brachinus Weber are notorious for their explosive defensive chemistry. Despite ongoing research on their defense mechanism, life history, and ecology, the group lacks a robust molecular-based phylogeny. In this study, three loci from mitochondrial and nuclear genomes (COI, CAD, 28S) are used to reconstruct the phylogeny of the large subgenus Neobrachinus, and test species group boundaries hypothesized by Erwin (1970) based on morphological characters. Erwin’s fumans species group is found to be polyphyletic, and is herein re-defined with eight new species groups erected to reflect clades based on molecular evidence: the cinctipennis, cyanipennis, galactoderus, gebhardis, mexicanus, phaeocerus, quadripennis, and tenuicollis species groups. Erwin’s cordicollis group is also expanded to include Brachinus (Neobrachinus) medius and the americanus group.
KW - molecular phylogenetics
KW - systematics
UR - http://www.scopus.com/inward/record.url?scp=85143988507&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85143988507&partnerID=8YFLogxK
U2 - 10.3897/zookeys.1131.85218
DO - 10.3897/zookeys.1131.85218
M3 - Article
AN - SCOPUS:85143988507
SN - 1313-2989
VL - 1131
SP - 155
EP - 171
JO - ZooKeys
JF - ZooKeys
ER -