Pycnoclavella

{{Short description|Genus of sea squirts}}

{{Automatic taxobox

| image = Pycnoclavella taureanensis Brunetti, 1991.jpg

| image_caption = Pycnoclavella taureanensis

| taxon = Pycnoclavella

| authority = Garstang, 1891

| synonyms = {{genus list|Archiascidia|Julin, 1904 }}

| synonyms_ref =

| type_species = Pycnoclavella aurilucens

| type_species_authority = Garstang, 1891

}}

Pycnoclavella is a genus of sea squirts first circumscribed by Walter Garstang in 1891. The generic name comes from the Ancient Greek {{wikt-lang|grc|πυκνός}} (puknós) meaning "closely united". In 1990, Patricia Kott placed Pycnoclavella in its own family, Pycnoclavellidae, but in 2008 it was moved back to Clavelinidae.{{cite journal |last1=Pérez-Portela |first1=Rocío |last2=Turon |first2=Xavier |title=Phylogenetic relationships of the Clavelinidae and Pycnoclavellidae (Ascidiacea) inferred from mtDNA data |journal=Invertebrate Biology |date=2008 |volume=127 |issue=1 |pages=108–120 |doi=10.1111/j.1744-7410.2007.00112.x |jstor=40206249|doi-access=free }}

{{As of|2018}}, WoRMS recognizes the following species:

• Pycnoclavella arenosa {{small|(Kott, 1972)}}
• Pycnoclavella atlantica {{small|Pérez-Portela et al., 2007}}
• Pycnoclavella aurantia {{small|Kott, 1990}}
• Pycnoclavella aurilucens {{small|Garstang, 1891}}
• Pycnoclavella belizeana {{small|Goodbody, 1996}}
• Pycnoclavella brava {{small|Pérez-Portela et al., 2007}}
• Pycnoclavella communis {{small|Pérez-Portela et al., 2007}}
• Pycnoclavella detorta {{small|(Sluiter, 1904)}}
• Pycnoclavella diminuta {{small|(Kott, 1957)}}
• Pycnoclavella elongata {{small|Kott, 1990}}
• Pycnoclavella filamentosa {{small|Kott, 2005}}
• Pycnoclavella flava {{small|(Monniot F., 1988)}}
• Pycnoclavella inflorescens {{small|Kott, 2005}}
• Pycnoclavella kottae {{small|Millar, 1960}}
• Pycnoclavella martae {{small|Perez-Portela & Turon, 2008}}
• Pycnoclavella minuta {{small|Millar, 1953}}
• Pycnoclavella nana {{small|(Lahille, 1890)}}
• Pycnoclavella narcissus {{small|Kott, 2005}}
• Pycnoclavella neapolitana {{small|(Julin, 1904)}}
• Pycnoclavella producta {{small|(Milne Edwards, 1841)}}
• Pycnoclavella stanleyi {{small|Berrill & Abbott, 1949}}
• Pycnoclavella stolonialis {{small|Pérez-Portela et al., 2010}}
• Pycnoclavella tabella {{small|Kott, 1990}}
• Pycnoclavella taureanensis {{small|Brunetti, 1991}}