Blackburnia lata sp. n. (Coleoptera: Carabidae) from Kauai: morphological transformation in the arboreal microhabitat

Blackburnia lata sp. n. (Coleoptera: Carabidae) from Kauai: morphological transformation in the... Introduction The Hawaiian Islands support a speciose radiation classified in the Hawaiian endemic genus Black- burnia Sharp, 1878 (Liebherr & Zimmerman 2000), with the previously known 130 species (Liebherr 2001) supporting recognition of Hawaii as a major center of species-level carabid beetle evolution. Since the origin of Kauai approximate- ly 5 Ma, Blackburnia beetles have speciated on, and colonized new islands throughout the current high Hawaiian Islands. Description below of a newly recognized species from Kauai, Blackbur- nia lata sp. n., first serves to illustrate topics of interest specific to Hawaiian biogeography. More importantly, the conjunction of morphological character transformations and microhabitat occu- pation by Kauai species related to B. lata address- es an issue of general interest relating to the con- duct of phylogenetic systematics. This issue re- volves around the question of whether or not char- acters deemed adaptive to particular situations should be used in the assessment of phylogenetic relationships. Proponents of the “total evidence” approach argue that all character information, re- gardless of source, should be used concurrently to estimate phylogenetic affinity, thereby testing the value of each character in the heterobathmy of all (Kluge & Wolf 1993, Luckow & Bruneau 1997, Grandcolas et http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Insect Systematics & Evolution Brill

Blackburnia lata sp. n. (Coleoptera: Carabidae) from Kauai: morphological transformation in the arboreal microhabitat

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Publisher
BRILL
Copyright
© 2003 Koninklijke Brill NV, Leiden, The Netherlands
ISSN
1399-560X
eISSN
1876-312X
D.O.I.
10.1163/187631203788964953
Publisher site
See Article on Publisher Site

Abstract

Introduction The Hawaiian Islands support a speciose radiation classified in the Hawaiian endemic genus Black- burnia Sharp, 1878 (Liebherr & Zimmerman 2000), with the previously known 130 species (Liebherr 2001) supporting recognition of Hawaii as a major center of species-level carabid beetle evolution. Since the origin of Kauai approximate- ly 5 Ma, Blackburnia beetles have speciated on, and colonized new islands throughout the current high Hawaiian Islands. Description below of a newly recognized species from Kauai, Blackbur- nia lata sp. n., first serves to illustrate topics of interest specific to Hawaiian biogeography. More importantly, the conjunction of morphological character transformations and microhabitat occu- pation by Kauai species related to B. lata address- es an issue of general interest relating to the con- duct of phylogenetic systematics. This issue re- volves around the question of whether or not char- acters deemed adaptive to particular situations should be used in the assessment of phylogenetic relationships. Proponents of the “total evidence” approach argue that all character information, re- gardless of source, should be used concurrently to estimate phylogenetic affinity, thereby testing the value of each character in the heterobathmy of all (Kluge & Wolf 1993, Luckow & Bruneau 1997, Grandcolas et

Journal

Insect Systematics & EvolutionBrill

Published: Jan 1, 2003

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