Abstract

The monotypic genus Odontonuncia Hickman, 1958 is redescribed. A new closely related genus, Hickmanoxyomma, is described for the type species, H. cavaticum (Hickman,1958), and six other species. Two new combinations are established: H. cavaticum (Monoxyomma) and H. tasmanicum (Roewer,1915) (Monacanthobunus). One new synonymy is proposed: Monoxyomma silvaticum Hickman, 1958 =H. tasmanicum (Roewer, 1915). Five new species are described in three species groups: H. goedei, H. clarkei and H. eberhardi (cavaticum species group); H. gibbergunyar (tasmanicum species group); and H. cristatum (cristatum species group). The distribution of the six cavernicolous and one surface species in Hickmanoxyomma and the possible influence of Pleistocene glaciation are discussed. Cavernicolous adaptations, including reductions in lateral branches of claws, are described. Free lateral sclerites are recorded for the first time in the Triaenonychidae and their significance as a family character in the superfamily Travunioidea is discussed.

 
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Bibliographic Data

Short Form
Hunt, 1990, Rec. Aust. Mus. 42(1): 45–68
Author
Glenn S. Hunt
Year
1990
Title
Hickmanoxyomma, a new genus of cavernicolous harvestmen from Tasmania (Opiliones: Triaenonychidae)
Serial Title
Records of the Australian Museum
Volume
42
Issue
1
Start Page
45
End Page
68
DOI
10.3853/j.0067-1975.42.1990.106
Language
English
Date Published
23 March 1990
Cover Date
23 March 1990
ISSN
0067-1975
CODEN
RAUMAJ
Publisher
The Australian Museum
Place Published
Sydney, Australia
Subjects
ARACHNIDA; TAXONOMY
Digitized
24 November 2008
Available Online
18 December 2008
Reference Number
106
EndNote
/Uploads/Journals/17720/106.enw
Title Page
/Uploads/Journals/17720/106.pdf
File size: 98kB
Complete Work
/Uploads/Journals/17720/106_complete.pdf
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