A New AcanthocyclopsKiefer, 1927 (Copepoda: Cyclopoida) from Central Mexico with Comments on the Distributionof the Genus in Middle America
✍ Scribed by Nancy Mercado; Eduardo Suárez-Morales; M. Silva-Briano
- Publisher
- John Wiley and Sons
- Year
- 2006
- Tongue
- English
- Weight
- 781 KB
- Volume
- 91
- Category
- Article
- ISSN
- 1434-2944
No coin nor oath required. For personal study only.
✦ Synopsis
A new species of Acanthocyclops KIEFER is described from central Mexico. It differs from its congeners by a combination of characters including mainly: 11-13 antennular segments, a spine formula of 3444 and modified setae on legs 2-4. The presence of a compound distal antennular segment is aberrant within the Cyclopoida. The new species seems to be related to Nearctic forms of the vernalis-robustus clade. Ancestors of this lineage probably reached central Mexico as a result of glaciation events and the new species is a remain of stranded postglacial populations; some of these forms were succesful in colonizing tropical lands. A key for the identification of the species of Acanthocyclops recorded in Mexico is included.