# Porcellio

Porcellio is a genus of woodlice in the family Porcellionidae. These crustaceans are found essentially worldwide. A well-known species is the common rough woodlouse, Porcellio scaber.
Most of the hundreds of Porcellio species were described by 1950, and many were known by the end of the 19th century already. But occasionally, new species have been found even in recent times.

## Species

There are approximately 191 species in the genus Porcellio :
* Porcellio achilleionensis Verhoeff, 1901
* Porcellio acutiserra Barnard, 1940
* Porcellio aghousi Paulian de Felice, 1939
* Porcellio albanicus Verhoeff, 1907
* Porcellio albicornis (Dollfus, 1896)
* Porcellio albinus Budde-Lund, 1885
* Porcellio alexandrinus Brandt, 1833
* Porcellio alluaudi Dollfus, 1893
* Porcellio alpinus Am Stein, 1857
* Porcellio alticola Vandel, 1940
* Porcellio anagae Hoese, 1985
* Porcellio ancararum Rodriguez & Vicente, 1992
* Porcellio andreinii Arcangeli, 1913
* Porcellio angustulus Budde-Lund, 1885
* Porcellio atlanteus Verhoeff, 1937
* Porcellio atlantidum Paulian de Felice, 1939
* Porcellio atticus Verhoeff, 1907
* Porcellio auritus Budde-Lund, 1879
* Porcellio babilonus Rodriguez & Barrientos, 1993
* Porcellio baeticensis Vandel, 1953
* Porcellio baidensis Viglianisi, Lombardo & Caruso, 1992
* Porcellio balearicus Cruz & Garcia, 1994
* Porcellio barroisi Dollfus, 1892
* Porcellio batesoni Collinge, 1915
* Porcellio bistriatus Budde-Lund, 1885
* Porcellio blattarius Budde-Lund, 1885
* Porcellio bolivari Dollfus, 1892
* Porcellio bovei Lucas, 1849
* Porcellio brevipennis Budde-Lund, 1885
* Porcellio buddelundi Simon, 1885
* Porcellio cadenati Vandel, 1954
* Porcellio calderensis Vandel, 1954
* Porcellio canariensis Dollfus, 1893
* Porcellio cataractae Vandel, 1960
* Porcellio cavernicolus Vandel, 1946
* Porcellio centralis Vandel, 1954
* Porcellio chilensis Nicolet, 1849
* Porcellio chuldahensis Verhoeff, 1923
* Porcellio cilicius Verhoeff, 1907
* Porcellio colasi Vandel, 1958
* Porcellio conchus Mulaik & Mulaik, 1943
* Porcellio conifer C. Koch, 1856
* Porcellio coronatus C. Koch, 1856
* Porcellio curti (Vandel, 1980)
* Porcellio cyclocephalus Menge, 1854
* Porcellio dalensi Caruso & Maio, 1990
* Porcellio debueni Dollfus, 1892
* Porcellio deganiensis Verhoeff, 1923
* Porcellio despaxi Vandel, 1958
* Porcellio dilatatus Brandt, 1833
* Porcellio dispar Verhoeff, 1901
* Porcellio djahizi Medini & Charfi-Cheikhrouha, 2001
* Porcellio djebeli Paulian de Felice, 1939
* Porcellio duboscqui Paulian de Felice, 1941
* Porcellio echinatus Lucas, 1849
* Porcellio elongatus Shen, 1949
* Porcellio emaciatus Budde-Lund, 1885
* Porcellio eserensis Rodriguez & Vicente, 1992
* Porcellio evansi Omer-Cooper, 1923
* Porcellio eximius Dollfus, 1896
* Porcellio expansus Dollfus, 1892
* Porcellio exstinctus Verhoeff, 1923
* Porcellio ferrarai Caruso & Maio, 1990
* Porcellio ferroi Paulian de Felice, 1939
* Porcellio ferrugineus Brandt, 1833
* Porcellio festai Arcangeli, 1932
* Porcellio ficulneus Budde-Lund, 1885
* Porcellio flavocinctus Budde-Lund, 1885
* Porcellio flavomarginatus Lucas, 1853
* Porcellio formosus Stuxberg, 1875
* Porcellio franzi Schmolzer, 1955
* Porcellio gallicus Dollfus, 1904
* Porcellio gauthieri Paulian de Felice, 1939
* Porcellio gestroi Brian, 1932
* Porcellio giustii Caruso & Maio, 1990
* Porcellio glaberrimus Verhoeff, 1951
* Porcellio grandeus Mulaik & Mulaik, 1943
* Porcellio granulatus Menge, 1854
* Porcellio granuliferus Budde-Lund, 1885
* Porcellio gruneri Hoese, 1978
* Porcellio haasi Arcangeli, 1925
* Porcellio herminiensis Vandel, 1946
* Porcellio hispanus Dollfus, 1892
* Porcellio hoffmannseggii Brandt, 1833
* Porcellio humberti Vandel, 1958
* Porcellio hyblaeus Viglianisi, Lombardo & Caruso, 1992
* Porcellio imbutus Budde-Lund, 1885
* Porcellio incanus Budde-Lund, 1879
* Porcellio inconspicuus Dollfus, 1892
* Porcellio ingenuus Budde-Lund, 1885
* Porcellio insignis Brandt, 1833
* Porcellio intercalarius Budde-Lund, 1885
* Porcellio intermedius Schmolzer, 1953
* Porcellio interpolator Budde-Lund, 1885
* Porcellio jaicensis Verhoeff, 1907
* Porcellio klaptoczi Verhoeff, 1907
* Porcellio krivosijensis Strouhal, 1939
* Porcellio laevis Latreille, 1804
* Porcellio laevissimus Dollfus, 1898
* Porcellio lamellatus Budde-Lund, 1875
* Porcellio lapidicolus Paulian de Felice, 1939
* Porcellio lepineyi Verhoeff, 1937
* Porcellio letourneuxi Simon, 1885
* Porcellio liliputanus Nicolet, 1849
* Porcellio longicornis Stein, 1859
* Porcellio maculipennis Budde-Lund, 1894
* Porcellio maculipes Budde-Lund, 1885
* Porcellio magnificus Dollfus, 1892
* Porcellio mahadidi Caruso & Maio, 1990
* Porcellio marginalis Budde-Lund, 1885
* Porcellio marginenotatus Budde-Lund, 1879
* Porcellio martini Dalens, 1984
* Porcellio medinae Rodriguez & Barrientos, 1993
* Porcellio meridionalis Vandel, 1954
* Porcellio messenicus Verhoeff, 1907
* Porcellio minutus Budde-Lund, 1909
* Porcellio monardi Brian, 1953
* Porcellio montanus Budde-Lund, 1885
* Porcellio monticola Lereboullet, 1853
* Porcellio narentanus Verhoeff, 1907
* Porcellio nasutus Strouhal, 1936
* Porcellio nemethi Paulian de Felice, 1939
* Porcellio nicklesi Dollfus, 1892
* Porcellio nigrogranulatus Dollfus, 1892
* Porcellio normani (Dollfus, 1899)
* Porcellio notatus C. Koch, 1854
* Porcellio novus Arcangeli, 1936
* Porcellio obsoletus Budde-Lund, 1885
* Porcellio ocellatus Budde-Lund, 1879
* Porcellio olivieri (Audouin, 1826)
* Porcellio ombrionis Vandel, 1954
* Porcellio omodeoi Caruso & Maio, 1990
* Porcellio orarum Verhoeff, 1910
* Porcellio ornatus Milne-Edwards, 1840
* Porcellio ovalis Dollfus, 1893
* Porcellio palaestinus Verhoeff, 1931
* Porcellio palmae Hoese, 1985
* Porcellio parenzani Arcangeli, 1932
* Porcellio pelseneeri Arcangeli, 1936
* Porcellio peninsulae Verhoeff, 1944
* Porcellio peyerimhoffi Paulian de Felice, 1942
* Porcellio piceus Dollfus, 1895
* Porcellio pityensis Vandel, 1956
* Porcellio platysoma Brandt, 1841
* Porcellio praeustus Budde-Lund, 1885
* Porcellio provincialis Aubert & Dollfus, 1890
* Porcellio pseudocilicius Schmalfuss, 1992
* Porcellio puberulus Dollfus, 1895
* Porcellio pulverulentus Budde-Lund, 1885
* Porcellio pumicatus Budde-Lund, 1885
* Porcellio purpureus Budde-Lund, 1885
* Porcellio pyrenaeus Dollfus, 1892
* Porcellio quercuum Verhoeff, 1952
* Porcellio ribauti Verhoeff, 1907
* Porcellio riffensis Caruso & Maio, 1990
* Porcellio romanorum Verhoeff, 1901
* Porcellio rubidus Budde-Lund, 1885
* Porcellio rucneri Karaman, 1966
* Porcellio rufobrunneus Omer-Cooper, 1923
* Porcellio saharaiensis Maio & Dalens, 1991
* Porcellio scaber Latreille, 1804
* Porcellio scabriusculus Mulaik, 1960
* Porcellio scitus Budde-Lund, 1885
* Porcellio septentrionalis Vandel, 1954
* Porcellio siculoccidentalis Viglianisi, Lombardo & Caruso, 1992
* Porcellio silvestrii Arcangeli, 1924
* Porcellio simulator Budde-Lund, 1885
* Porcellio spatulatus Costa, 1882
* Porcellio spinicornis Say, 1818
* Porcellio spinipennis Budde-Lund, 1885
* Porcellio spinipes Dollfus, 1893
* Porcellio spretus Budde-Lund, 1885
* Porcellio strinatii Vandel, 1960
* Porcellio studienstiftius Hoese, 1985
* Porcellio succinctus Budde-Lund, 1885
* Porcellio tentaculatus Vieira, 1982
* Porcellio tortonesei Arcangeli, 1932
* Porcellio tripolitanus Verhoeff, 1907
* Porcellio turolensis Cruz, 1992
* Porcellio uljanini Budde-Lund, 1885
* Porcellio vandeli Verhoeff, 1938
* Porcellio variabilis Lucas, 1849
* Porcellio villiersi Paulian de Felice, 1939
* Porcellio violaceus Budde-Lund, 1879
* Porcellio wagneri Brandt, 1841
* Porcellio werneri Strouhal, 1929
* Porcellio xavieri Arcangeli, 1958
* Porcellio yemenensis Barnard, 1941
* Porcellio zarcoi Vandel, 1960
Porcellio cyclocephalus and P. notatus are fossil species from Baltic amber. They are placed in the present genus for lack of a better alternative, but whether this is correct is doubtful as the original descriptions are very brief and hardly diagnostic.