Chaetodipus siccus (Osgood, 1907)

Álvarez-Castañeda, Sergio Ticul & Rios, Evelyn, 2011, Revision of Chaetodipus arenarius (Rodentia: Heteromyidae), Zoological Journal of the Linnean Society 161 (1), pp. 213-228 : 226-227

publication ID

https://doi.org/ 10.1111/j.1096-3642.2009.00630.x

DOI

https://doi.org/10.5281/zenodo.5491775

persistent identifier

https://treatment.plazi.org/id/03C62313-FFEE-FFA5-FC16-F921B4193C26

treatment provided by

Valdenar

scientific name

Chaetodipus siccus
status

 

CHAETODIPUS SICCUS View in CoL

Distribution: The original distribution of C. a. siccus was Cerralvo Island (geographical group 29), which is close to the south-eastern coast of the peninsula. However, specimens of the C. arenarius complex collected in the Los Planes Basin (geographical group 31) are genetically similar to the Cerralvo Island population. Los Planes Basin is surrounded by mountain ranges on three sides and opens to the Gulf of California facing Cerralvo Island, which is 11 km off the coast ( Gastil, Minch & Phillips, 1983). The relatively high ridges isolate the population from other species in the C. arenarius complex ( C. dalquesti and C. arenarius ).

Diagnosis: Following Osgood (1907), C. siccus is similar to C. arenarius ; however, externally it is decidedly larger than C. arenarius , with very weak or rarely present rump bristles. The skull is decidedly larger and heavier; the mastoids are somewhat larger and have broad ascending branches of the supraoccipital ridge.

Subspecific taxonomy: No genetic or morphological differences were found amongst the specimens from the basin and the island. The evidence does not support the designation of any subspecies as C. siccus .

Comments: The five specimens from Cerralvo Island have the same haplotype .

Kingdom

Animalia

Phylum

Chordata

Class

Mammalia

Order

Rodentia

Family

Heteromyidae

Genus

Chaetodipus

Darwin Core Archive (for parent article) View in SIBiLS Plain XML RDF