Project 728: R. H. Pine, R. M. Timm, M. Weksler. 2012. A newly recognized clade of trans-Andean Oryzomyini (Rodentia: Cricetidae), with description of a new genus. Journal of Mammalogy. 93 (3):851-870.
Abstract
We expand upon recent studies on relationships within the Oryzomyini, in particular, those involving taxa currently assigned to the genus Sigmodontomys. In recent years, Sigmodontomys has been treated as including 2 species, alfari (J. A. Allen, 1897) and aphrastus (Harris, 1932), but throughout their complicated taxonomic history both species also have been placed in the genus Oryzomys, and alfari independently in Nectomys. Using morphological (98 external, cranial, dental, and postcranial) and molecular (nuclear interphotoreceptor retinoid-binding protein gene and mitochondrial cytochrome-b and ribosomal 12S RNA genes) characters, we infer the phylogenetic position of these 2 species within Oryzomyini. We document that alfari and aphrastus do not form a monophyletic group. Sigmodontomys alfari is most closely related to Melanomys, and aphrastus is either the sister to that clade, or to the extinct Caribbean genus Megalomys. Thus, aphrastus is best regarded as representing a new genus, which is described and named herein. This new genus falls within the Sigmodontomys-Melanomys-Aegialomys-Nesoryzomys clade, which forms a monophyletic group of mainly southern Central American and northern South American taxa primarily restricted to lowland to midelevation montane trans-Andean habitats and possessing a marked ability to cross expanses of salt water. The new genus occurs at middle elevations from north-central Costa Rica to northwestern Ecuador and along with some populations of Aegialomys and Melanomys occupies the highest elevations for members of this group.Read the article »
Article DOI: 10.1644/11-MAMM-A-012.1
Project DOI: 10.7934/P728, http://dx.doi.org/10.7934/P728
This project contains | Matrices |
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Download Project SDD File | Total scored cells: 5217 Total media associated with cells: 0 Total labels associated with cell media: 0 |
Characters | |
Total characters: 98 Total characters with associated media: 0 Total characters with media with labels: 0 Total character states: 238 Total character states with associated media: 0 Total character states with media with labels:0 Total unordered/ordered characters:98/0 |
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MorphoBank Project 728
MorphoBank Project 728
- Creation Date:
02 May 2012 - Publication Date:
09 October 2012 - Project views: 52574
- Media downloads: 15
- Matrix downloads: 21
Authors' Institutions
- Universidade Federal do Rio De Janeiro (UFRJ)
- University of Kansas
- Museu Nacional do Rio de Janeiro
- Field Museum of Natural History
Members
member name | taxa | specimens | media | chars | character
| cell scorings (scored, NPA, "-") | cell
| rules | ||||||
Marcelo Weksler Project Administrator | 59 | 3 | 9 | 98 | 0 | 0 | 5217 (5217, 0, 0) | 0 | 0 | 0 |
Taxonomic Overview for Matrix 'M1646' (59 Taxa)
taxon | unscored cells |
scored cells |
no cell support |
NPA cells |
"-" cells | cell images | labels on cell images |
member access |
[1] Nyctomys sumichrasti Last Modified in 12/05/13 | 3 | 95 | 95 | 0 | 0 | 0 | 0 | 1 |
[2] Peromyscus maniculatus Last Modified in 12/05/13 | 10 | 88 | 88 | 0 | 0 | 0 | 0 | 1 |
[3] Delomys sublineatus Last Modified in 12/05/13 | 13 | 85 | 85 | 0 | 0 | 0 | 0 | 1 |
[4] Thomasomys baeops Last Modified in 12/05/13 | 3 | 97 | 95 | 0 | 0 | 0 | 0 | 1 |
[5] Wiedomys pyrrhorhinos Last Modified in 12/05/13 | 12 | 87 | 86 | 0 | 0 | 0 | 0 | 1 |
[6] Aegialomys xanthaeolus Last Modified in 12/05/13 | 9 | 94 | 89 | 0 | 0 | 0 | 0 | 1 |
[7] Amphinectomys savamis Last Modified in 12/05/13 | 67 | 31 | 31 | 0 | 0 | 0 | 0 | 1 |
[8] Cerradomys subflavus Last Modified in 12/05/13 | 8 | 95 | 90 | 0 | 0 | 0 | 0 | 1 |
[9] Eremoryzomys polius Last Modified in 12/05/13 | 22 | 76 | 76 | 0 | 0 | 0 | 0 | 1 |
[10] Euryoryzomys lamia Last Modified in 12/05/13 | 22 | 77 | 76 | 0 | 0 | 0 | 0 | 1 |
[11] Euryoryzomys macconnelli Last Modified in 12/05/13 | 8 | 92 | 90 | 0 | 0 | 0 | 0 | 1 |
[12] Euryoryzomys russatus Last Modified in 12/05/13 | 14 | 85 | 84 | 0 | 0 | 0 | 0 | 1 |
[13] Handleyomys alfaroi Last Modified in 12/05/13 | 7 | 94 | 91 | 0 | 0 | 0 | 0 | 1 |
[14] Handleyomys chapmani Last Modified in 12/05/13 | 10 | 90 | 88 | 0 | 0 | 0 | 0 | 1 |
[15] Handleyomys intectus Last Modified in 12/05/13 | 16 | 84 | 82 | 0 | 0 | 0 | 0 | 1 |
[16] Handleyomys rostratus Last Modified in 12/05/13 | 1 | 99 | 97 | 0 | 0 | 0 | 0 | 1 |
[17] Holochilus brasiliensis Last Modified in 12/05/13 | 1 | 98 | 97 | 0 | 0 | 0 | 0 | 1 |
[18] Hylaeamys megacephalus Last Modified in 12/05/13 | 0 | 100 | 98 | 0 | 0 | 0 | 0 | 1 |
[19] Hylaeamys yunganus Last Modified in 12/05/13 | 11 | 88 | 87 | 0 | 0 | 0 | 0 | 1 |
[20] Lundomys molitor Last Modified in 12/05/13 | 9 | 90 | 89 | 0 | 0 | 0 | 0 | 1 |
[21] Melanomys columbianus Last Modified in 12/05/13 | 1 | 103 | 97 | 0 | 0 | 0 | 0 | 1 |
[22] Microryzomys minutus Last Modified in 12/05/13 | 3 | 95 | 95 | 0 | 0 | 0 | 0 | 1 |
[23] Mindomys hammondi Last Modified in 12/05/13 | 22 | 77 | 76 | 0 | 0 | 0 | 0 | 1 |
[24] Neacomys minutus Last Modified in 12/05/13 | 22 | 76 | 76 | 0 | 0 | 0 | 0 | 1 |
[25] Neacomys musseri Last Modified in 12/05/13 | 16 | 82 | 82 | 0 | 0 | 0 | 0 | 1 |
[26] Neacomys spinosus Last Modified in 12/05/13 | 1 | 98 | 97 | 0 | 0 | 0 | 0 | 1 |
[27] Nectomys apicalis Last Modified in 12/05/13 | 15 | 83 | 83 | 0 | 0 | 0 | 0 | 1 |
[28] Nectomys squamipes Last Modified in 12/05/13 | 5 | 94 | 93 | 0 | 0 | 0 | 0 | 1 |
[29] Nephelomys albigularis Last Modified in 12/05/13 | 9 | 92 | 89 | 0 | 0 | 0 | 0 | 1 |
[30] Nephelomys levipes Last Modified in 12/05/13 | 10 | 90 | 88 | 0 | 0 | 0 | 0 | 1 |
[31] Nesoryzomys narboroughi Last Modified in 12/05/13 | 5 | 93 | 93 | 0 | 0 | 0 | 0 | 1 |
[32] Nesoryzomys swarthi Last Modified in 12/05/13 | 37 | 61 | 61 | 0 | 0 | 0 | 0 | 1 |
[33] Oecomys bicolor Last Modified in 12/05/13 | 8 | 93 | 90 | 0 | 0 | 0 | 0 | 1 |
[34] Oecomys catherinae Last Modified in 12/05/13 | 23 | 75 | 75 | 0 | 0 | 0 | 0 | 1 |
[35] Oecomys concolor Last Modified in 12/05/13 | 1 | 99 | 97 | 0 | 0 | 0 | 0 | 1 |
[36] Oecomys mamorae Last Modified in 12/05/13 | 10 | 89 | 88 | 0 | 0 | 0 | 0 | 1 |
[37] Oecomys trinitatis Last Modified in 12/05/13 | 12 | 89 | 86 | 0 | 0 | 0 | 0 | 1 |
[38] Oligoryzomys flavescens Last Modified in 12/05/13 | 11 | 87 | 87 | 0 | 0 | 0 | 0 | 1 |
[39] Oligoryzomys fornesi Last Modified in 12/05/13 | 21 | 77 | 77 | 0 | 0 | 0 | 0 | 1 |
[40] Oligoryzomys fulvescens Last Modified in 12/05/13 | 1 | 97 | 97 | 0 | 0 | 0 | 0 | 1 |
[41] Oligoryzomys nigripes Last Modified in 12/05/13 | 8 | 91 | 90 | 0 | 0 | 0 | 0 | 1 |
[42] Oligoryzomys stramineus Last Modified in 12/05/13 | 23 | 75 | 75 | 0 | 0 | 0 | 0 | 1 |
[43] Oreoryzomys balneator Last Modified in 12/05/13 | 16 | 82 | 82 | 0 | 0 | 0 | 0 | 1 |
[44] Oryzomys couesi Last Modified in 12/05/13 | 10 | 88 | 88 | 0 | 0 | 0 | 0 | 1 |
[45] Oryzomys palustris Last Modified in 12/05/13 | 0 | 100 | 98 | 0 | 0 | 0 | 0 | 1 |
[46] Pseudoryzomys simplex Last Modified in 12/05/13 | 9 | 90 | 89 | 0 | 0 | 0 | 0 | 1 |
[47] Scolomys ucayalensis Last Modified in 12/05/13 | 9 | 89 | 89 | 0 | 0 | 0 | 0 | 1 |
[48] Sigmodontomys alfari Last Modified in 12/05/13 | 2 | 100 | 96 | 0 | 0 | 0 | 0 | 1 |
[49] Tanyuromys aphrastus Last Modified in 12/05/13 | 17 | 84 | 81 | 0 | 0 | 0 | 0 | 1 |
[50] Sooretamys angouya Last Modified in 12/05/13 | 2 | 99 | 96 | 0 | 0 | 0 | 0 | 1 |
[51] Transandinomys talamancae Last Modified in 12/05/13 | 1 | 100 | 97 | 0 | 0 | 0 | 0 | 1 |
[52] Zygodontomys brevicauda Last Modified in 12/05/13 | 1 | 102 | 97 | 0 | 0 | 0 | 0 | 1 |
[53] Zygodontomys cherriei Last Modified in 12/05/13 | 1 | 100 | 97 | 0 | 0 | 0 | 0 | 1 |
[54] Drymoreomys albimaculatus Last Modified in 12/05/13 | 2 | 100 | 96 | 0 | 0 | 0 | 0 | 1 |
[55] Megalomys desmarestii Last Modified in 12/05/13 | 18 | 80 | 80 | 0 | 0 | 0 | 0 | 1 |
[56] Megalomys luciae Last Modified in 12/05/13 | 28 | 70 | 70 | 0 | 0 | 0 | 0 | 1 |
[57] Rhipidomys nitela Last Modified in 12/05/13 | 15 | 83 | 83 | 0 | 0 | 0 | 0 | 1 |
[58] Melanomys chrysomelas Last Modified in 12/05/13 | 21 | 86 | 77 | 0 | 0 | 0 | 0 | 1 |
[59] Melanomys caliginosus Last Modified in 12/05/13 | 2 | 103 | 96 | 0 | 0 | 0 | 0 | 1 |
Project views
type | number of views | Individual items viewed (where applicable) |
Total project views | 52574 | |
Project overview | 3870 | |
Media views | 15115 | Media search (6452 views); M107731 (1027 views); M107735 (926 views); M107734 (961 views); M107737 (943 views); M107732 (960 views); M107738 (920 views); M107733 (975 views); M107736 (950 views); M107739 (1001 views); |
Matrix views | 2868 | Matrix landing page (2458 views); Tanyuromys morphological matrix (410 views); |
Taxon list | 17885 | |
Specimen list | 4877 | |
Bibliography | 2041 | |
Documents list | 2052 | |
Views for media list | 3866 |
Project downloads
type | number of downloads | Individual items downloaded (where applicable) |
Total downloads from project | 417 | |
Media downloads | 15 | M107731 (1 download); M (1 download); M107734 (5 downloads); M107737 (6 downloads); M107735 (1 download); M107738 (1 download); |
Matrix downloads | 21 | Tanyuromys morphological matrix (21 downloads); |
Document downloads | 5 | complete matrix, including morphological and molecular characters, used in Tanyuromys analyses. (5 downloads); |
Project downloads | 376 |