Species Group - Vertebrate Examples

Vertebrate Examples

• Brachygobius, a small genus of gobies which are popular as aquarium fish, are informally divided by taxonomists into two species groups. The dwarf "Brachygobius nunus species group" contains Brachygobius nunus, Brachygobius aggregatus, and Brachygobius mekongensis while the bigger "Brachygobius doriae species group" contains the bigger species of Brachygobius doriae, Brachygobius sabanus, and Brachygobius xanthomelas.
• The chameleon Brookesia minima has been characterized as belonging to a species group with other "Madagascan Dwarf Chameleons" such as Brookesia dentata, Brookesia tuberculata, and other new or unidentified species such as a recently described chameleon from Tsingy de Bemaraha Strict Nature Reserve.
• Peromyscus, a genus of deer mice, has been divided into subgenera Peromyscus and Haplomylomys and these subgenera are subdivided further into thirteen species groups.
• Recent cytogenetic studies have shown that the Middle East Blind Mole Rat (Spalax ehrenbergi) may actually be a species group containing several cryptic species that can be distinguished by chromosome numbers.