Polyascus
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| Polyascus | |
|---|---|
| Scientific classification Edit this classification | |
| Kingdom: | Animalia |
| Phylum: | Arthropoda |
| Class: | Thecostraca |
| Subclass: | Cirripedia |
| Infraclass: | Rhizocephala |
| Family: | Polyascidae |
| Genus: | Polyascus Glenner, Lützen & Takahashi, 2003 |
| Type species | |
| Sacculina polygenea Lützen & Takahashi, 1997
| |
Polyascus is a genus of barnacles in infraclass Rhizocephala. It was circumscribed in 2003 by Henrik Glenner, Jørgen Lützen, and Tohru Takahashi. They included three species, all transferred from Sacculina. The generic name polyascus (poly "many" + ascus "bag") refers to the typical presence of multiple external sac-like female bodies, known as externae. In Polyascus species, these originate from asexual reproduction.[1]
Species
[edit | edit source]As of 2017[update], WoRMS recognizes the following three species, all included in the genus's circumscription.[2]
| Binominal name (Original combination) |
Author citation | Type host | Type locality | Ref |
|---|---|---|---|---|
| Polyascus gregaria (Sacculina gregaria) |
(Okada & Miyashita, 1935) | Eriocheir japonica | Japan | [3] apud WoRMS |
| Polyascus plana (Sacculina plana) |
(Boschma, 1933) | "Grapsus strigosus" (=Grapsus albolineatus) |
"Takao, South Formosa" (=Kaohsiung City, Taiwan) |
[4] |
| Polyascus polygenea (Sacculina polygenea) |
(Lützen & Takahashi, 1997) | Hemigrapsus sanguineus | "Inuki, Oyano Island, Amakusa Islands, Kyushu" | [5] |
References
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