Overview
Photos
Taxonomy
The Family Tethyidae is further organized into finer groupings including:
- Genus (17): Anthotethya · Burtonitethya · Columnitis · Donatia · Halicometes · Laxotethya · Melibe · Nucleotethya · Oxytethya · Stellitethya · Tectitethya · Tethya · Tethyastra · Tethycometes · Tethys · Tethytimea · Xenospongia
- Species: ZipcodeZoo has pages for 131 species and subspecies in the Family Tethyidae.
Genera
Anthotethya
Burtonitethya
Columnitis
Donatia
Donatia is a genus of two species in the monogeneric family Donatiaceae. In the past, Donatia has been placed in the subfamily Donatioideae, described by Johannes Mildbraed in his 1908 taxonomic monograph of the family Stylidiaceae. The subfamily was created to distinguish the difference between the single genus Donatia from the five typical genera of the Stylidiaceae that Mildbraed placed in the Stylidioideae subfamily. The subfamily taxonomy represented the taxonomic uncertainty of Donatia, which had at one point also been placed in the Saxifragaceae. Donatia differs sufficiently from the genera in the Stylidiaceae in that it has free stamens and petals, paracytic stomata, and a pollen morphology distinct from the other genera. Because of this and the recent phylogenetic analysis based on rbcL genes, more recent treatments have segregated Donatia into its own family, the Donatiaceae. The molecular phylogenetic analysis has placed Donatia as a sister-group to Stylidiaceae, thus leaving the Stylidiaceae as a monophyletic family. As early as 3 years after Mildbraed's publication of the subfamily Donatioideae, other authors began to question the placement and argued for recognition of Donatiaceae. In 1915, Carl Skottsberg formally published the Donatiaceae. The APG II system recommends the inclusion of Donatia in Stylidiaceae but allows for the optional recognition of the family Donatiaceae. The two species in the genus represent a wide geographic range. D. novae-zelandiae is found in the alpine and subalpine regions of New Zealand and Tasmania while D. fascicularis is native to similar habitats in southern South America to latitude 40°S. [more]
Halicometes
Laxotethya
Melibe
Nucleotethya
Oxytethya
Stellitethya
Tectitethya
Tethya
Tethyastra
Tethycometes
Tethys
A Genus in the Kingdom Animalia. [more]
Tethytimea
Xenospongia
More info about the Genus Xenospongia may be found here.
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