Idagona Buckett and Gardner 1967
Creators
Description
Idagona Buckett and Gardner 1967
Idagona Buckett and Gardner 1967, p. 120. Shear, 1972, p. 270.
Diagnosis: Distinct from all other North American conotylid millipeds in the complete loss of the telopodite articles of the posterior gonopods and the reduction of those appendages to a small pair of coxites which pass anteriorly between the anterior gonopods (Figs. 1 -8, 19, 20). Additionally, the third legpair femora in males are inflated and bear an adenostyle (Figs. 9-12, 14); the tenth coxae in males are enlarged and lobed; the eleventh coxae are unmodified.
Notes: The species of Idagona have been recorded from five discrete areas (Map 1). The new species I. lehmanensis occurs in southeastern Nevada, far separated from the other localities; this species is highly distinctive: the fourth as well as the third prefemora are modified in males, and the gonopods differ in their much greater complexity and the proportions of the several elements. I. westcotti is known from three clusters of lava tubes in southern Idaho, and I. jasperi is from two high-altitude caves in Logan Canyon, Cache Co., Utah, not far over the border between Idaho and Utah. Accordingly, jasperi more closely resembles westcotti and can be separated from that species only by the details of gonopod shape (Figs. 3, 7. 19. 20). The distinct habitat and locality reinforces the hypothesis that jasperi is a reproductively isolated population, while the 1. In point of fact, it is the reduced coxites of the posterior gonopods that are extended anteriorly between the anterior gonopods, but this is an homologous arrangement necessitated by the extreme reduction of the posterior gonopods, which in Idagona consist only of the small coxites.
three clusters of westcotti localities harbor populations not distinguishable by gonopod or other differences (Figs. 1, 2, 5, 6, 9. 10, 15. 16).
For conservation reasons, and at the request of the collectors, the exact locations of caves mentioned in this paper are not given. Map 1 represents geometrically average locations for clusters of caves, or the approximate location of an individual cave.
The types of the new species described below are deposited in the collections of the Field Museum of Natural History (FMNH), Chicago.
MAP 1. Central Rocky Mountain and Great Basin region of the United States, showing distribution of Idagona species. Shaded areas are karst or pseudokarst (lava beds). Triangles, I. westcotti; square, I. jasperi; circle, I. lehmanensis. Triangle 1, general location of Blowhole-Sand Lake, Ice Capades, and London Tunnel Caves; triangle 2, general location of Government Cave; triangle 3, general location of Giant Arch and Pot O’ Gold Caves (may be two names for the same cave). Map by S. J. Taylor.
Other
Published as part of Shear, William A., 2007, Cave millipeds of the United States. V. The genus Idagona Buckett & Gardner (Chordeumatida, Conotylidae, Idagoninae), pp. 1-12 in Zootaxa 1463 on pages 2-3, DOI: 10.5281/zenodo.176487Files
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Linked records
Additional details
Identifiers
Related works
- Cites
- Figure: 10.5281/zenodo.176488 (DOI)
- Figure: 10.5281/zenodo.176489 (DOI)
- Is part of
- Journal article: 10.5281/zenodo.176487 (DOI)
- Journal article: http://publication.plazi.org/id/FFAAFFE5FFFC9629FFEB514CFFCCC62B (URL)
- Is source of
- https://sibils.text-analytics.ch/search/collections/plazi/0393879DFFFD962BFF7C559CFE71C385 (URL)
Biodiversity
- Family
- Conotylidae
- Genus
- Idagona
- Kingdom
- Animalia
- Order
- Chordeumatida
- Phylum
- Arthropoda
- Scientific name authorship
- Buckett and Gardner
- Taxon rank
- genus
- Taxonomic concept label
- Idagona and, 1967 sec. Shear, 2007
References
- Buckett, J. S. & Garner, M. R. (1967) A new family of cavernicolous millipedes with description of a new genus and species from Idaho (Diplopoda: Chordeumida: Chordeumidea). The Michigan Entomologist, 1, 117 - 126.
- Shear, W. A. (1972) Studies in the milliped order Chordeumida (Diplopoda): a revision of the family Cleidogonidae and a reclassification of the order Chordeumida in the New World. Bulletin of the Museum of Comparative Zoology 144, 151 - 352.