Abstract
To date, six species of the Australian endemic millipede genus Boreohesperus have been recognized: all have highly localized distributions, consistent with being short-range endemic species, and all are from the Cape Range and Pilbara region of Western Australia. In this paper, we describe three new species, B. alcyonis sp. nov., B. psittacinus sp. nov., and B. vascellus sp. nov., each from a different island in the Kimberley region of north-western Australia.
Highlights
The keeled millipede genus Boreohesperus Shear, 1992 was reviewed recently (Car & Harvey 2013) and six species were recognised, all from north-western Australia
Boreohesperus may be distinguished from the four other genera of Australian paradoxosomatids whose gonopods divide into two main branches, Dicladosoma Brölemann, 1913, Dicladosomella Jeekel, 1982, Oncocladosoma Jeekel, 1985 and Somethus Chamberlin, 1920, by the two main branches of its gonopod arising from a distinct femorite that may vary from one-quarter to one-half of the acropodite length
In Dicladosoma, the two thick gonopod branches arise from the prefemur, and the gonopods of each of the other three genera are split into two main branches much more deeply than in Boreohesperus, almost to the base of the acropodite
Summary
The keeled millipede genus Boreohesperus Shear, 1992 was reviewed recently (Car & Harvey 2013) and six species were recognised, all from north-western Australia. Car & Harvey (2013) stated that a “separate process arising from the base of the gonopod in some species is tagged the ‘pp’”. After the publication of Car & Harvey (2013) several additional specimens of Boreohesperus were located in the collection of the Western Australian Museum, representing three new species, described in this paper. These new species conform to the European Journal of Taxonomy 320: 1–11 (2017)
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