A remarkable case of mosaic parapatry in millipedes

By

Mesibov, Robert

Type

Article

Date of Publication

2011

Original Publication

ZooKeys

Volume

156

Pages

71-84

Subjects

Australia , boundary estimation , Dalodesmidae , Delaunay triangulation , Diplopoda , millipede , parapatry , Polydesmida , Tasmania

Contributed by

Pensoft Publishers

Language

English

Published by

Sofia, Bulgaria Pensoft Publishers

Identifiers

DOI: https://doi.org/10.3897/zookeys.156.1893

 

Abstract

The parapatric boundary between Tasmaniosoma compitale Mesibov, 2010 and T. hickmanorum Mesibov, 2010 (Polydesmida: Dalodesmidae) in northwest Tasmania was mapped in preparation for field studies of parapatry and speciation. Both millipede species can be collected as adults throughout the year, are often abundant in eucalypt forest and tolerate major habitat disturbance. The parapatric boundary between the two species is ca 100 m wide in well-sampled sections and ca 230 km long. It runs from sea level to 600-700 m elevation, crosses most of the river catchments in northwest Tasmania and several major geological boundaries, and one portion of the boundary runs along a steep rainfall gradient. The location of the boundary is estimated here from scattered sample points using a method based on Delaunay triangulation.