Porcellio formosus: Difference between revisions
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{{Short description|Species of woodlouse}} |
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{{Taxobox |
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{{Speciesbox |
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| regnum = [[Animal]]ia |
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| authority = [[Stuxberg]], 1875 |
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| subphylum = [[Crustacean|Crustacea]] |
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| classis = [[Malacostraca]] |
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| ordo = [[Isopoda]] |
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| familia = [[Porcellionidae]] |
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| genus = ''[[Porcellio]]'' |
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| species = '''''P. formosus''''' |
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| binomial_authority = [[Stuxberg]], 1875 |
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'''''Porcellio formosus''''' is a species of [[woodlouse]] in the genus ''[[Porcellio]]'' belonging to the family [[Porcellionidae]] that can be found in [[San |
'''''Porcellio formosus''''' is a species of [[woodlouse]] in the genus ''[[Porcellio]]'' belonging to the family [[Porcellionidae]] that can be found in [[San Pedro, Los Angeles, California|San Pedro]] and [[San Francisco]] of [[California]]. |
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==Description== |
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The species are {{convert|13|x|6|mm}} high and wide, with the [[antenna (biology)|antennae]] segments are as long as {{convert|6|mm}}. Their [[Taenia coli|longitudinal band]] is grayish-white, and have a series of spots which are of the same colour. The body is ovate, with a long, shining, and smooth convex. The eyes are oval shaped, prominent, and have many [[ocelli]]. The little developed median frontal lobe is rounded. The drawn out lateral lobes are equal in length and width of the eyes or the face. Both [[epimera]], posterior margin, posterior angles, and the first three segments of the [[thorax]] are straight. The fifth, sixth, and seventh segments are bent backwards. The [[Semicircle|semicircular]] [[abdomen]] of the fifth segment is wide, while epimera on the parts three, four, and five are quite large, but still bent backward. The seventh segment is triangular in shape, and is wide and long.<ref name=google>{{cite book|url=https://books.google.com/books?id=BPHRAAAAMAAJ&q=Porcellio+ovalis&pg=PA613|author=Harriet Richardson|author-link=Harriet Richardson|title=A monograph on the isopods of North America|year=1905|pages=612–613|format=[[Portable Document Format|PDF]]}}</ref> |
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The species also have a wide, and acuminate [[apex (mollusc)|apex]], which also have a broad longitudinal excavation which is located above the apex. The basal part of the [[uropoda]] can be seen from below, with the convex being always above. The dorsal part is dark greyish-red in colour, and have many irregular and pale coloured oblong spots. The spots are mixed and are arranged in two lines, which are divided by an interval. The colour of abdomen is the same as the rest of the body, and are either bi-punctate or tri-punctate at the base.<ref name=google/> |
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==References== |
==References== |
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{{Reflist}} |
{{Reflist}} |
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{{Taxonbar|from=Q7229976}} |
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[[Category:Endemic fauna of California]] |
[[Category:Endemic fauna of California]] |
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[[Category:Woodlice |
[[Category:Woodlice]] |
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[[Category:Porcellionidae]] |
[[Category:Porcellionidae]] |
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[[Category:Fauna of the San Francisco Bay Area]] |
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[[Category:Fauna without expected TNC conservation status]] |
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Latest revision as of 08:31, 2 November 2022
| Porcellio formosus | |
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Scientific classification 
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| Domain: | Eukaryota |
| Kingdom: | Animalia |
| Phylum: | Arthropoda |
| Class: | Malacostraca |
| Order: | Isopoda |
| Suborder: | Oniscidea |
| Family: | Porcellionidae |
| Genus: | Porcellio |
| Species: | P. formosus
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| Binomial name | |
| Porcellio formosus Stuxberg, 1875
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Porcellio formosus is a species of woodlouse in the genus Porcellio belonging to the family Porcellionidae that can be found in San Pedro and San Francisco of California.
Description
[edit]The species are 13 by 6 millimetres (0.51 in × 0.24 in) high and wide, with the antennae segments are as long as 6 millimetres (0.24 in). Their longitudinal band is grayish-white, and have a series of spots which are of the same colour. The body is ovate, with a long, shining, and smooth convex. The eyes are oval shaped, prominent, and have many ocelli. The little developed median frontal lobe is rounded. The drawn out lateral lobes are equal in length and width of the eyes or the face. Both epimera, posterior margin, posterior angles, and the first three segments of the thorax are straight. The fifth, sixth, and seventh segments are bent backwards. The semicircular abdomen of the fifth segment is wide, while epimera on the parts three, four, and five are quite large, but still bent backward. The seventh segment is triangular in shape, and is wide and long.[1]
The species also have a wide, and acuminate apex, which also have a broad longitudinal excavation which is located above the apex. The basal part of the uropoda can be seen from below, with the convex being always above. The dorsal part is dark greyish-red in colour, and have many irregular and pale coloured oblong spots. The spots are mixed and are arranged in two lines, which are divided by an interval. The colour of abdomen is the same as the rest of the body, and are either bi-punctate or tri-punctate at the base.[1]
References
[edit]- ^ a b Harriet Richardson (1905). A monograph on the isopods of North America (PDF). pp. 612–613.
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