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- Title
Cryptic species in the mountaintops: species delimitation and taxonomy of the Bembidion breve species group (Coleoptera: Carabidae) aided by genomic architecture of a century-old type specimen.
- Authors
SPROUL, JOHN S.; MADDISON, DAVID R.
- Abstract
The breve species group includes closely related Bembidion Latreille ground beetles commonly found at high elevation in the mountains of western North America. For several decades, the group has been considered to consist of two species. Here, we present evidence from morphological, molecular and geographic data that the group contains nine species: Bembidion ampliatum, B. breve, B. geopearlis, B. laxatum, B. lividulum, B. oromaia, B. saturatum, B. testatum and B. vulcanix. We describe three species (B. geopearlis, B. oromaia and B. vulcanix) as new and resurrect four previously synonymized names (B. ampliatum, B. lividulum, B. saturatum and B. testatum). Species diversity is highest throughout the Cascades in Oregon and Washington, and Sierra Nevada of California, where up to seven species can occur in sympatry. We resolved challenging nomenclatural issues through analysis of sequences obtained from century-old type specimens by using a novel application of rDNA copy number analysis - an approach that may prove useful for other historical specimens.
- Subjects
BEETLES; GROUND beetles; SPECIES distribution; SYMPATRIC speciation; ANIMAL classification
- Publication
Zoological Journal of the Linnean Society, 2018, Vol 183, Issue 3, p556
- ISSN
0024-4082
- Publication type
Article
- DOI
10.1093/zoolinnean/zlx076