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'''''Sesarmops''''' is a genus of crabs in the family [[Sesarmidae]]. Its members are distributed through the Indo–West-Pacific oceanic region. They live in freshwater forest streams near the coast, and in mangroves.
'''''Sesarmops''''' is a genus of [[Crab|crabs]] in the family [[Sesarmidae]]. Its members are distributed through the [[Indo-West-Pacific]] oceanic region. They live in [[Fresh water|freshwater]] forest streams near the coast, and in [[Mangrove|mangroves]].


== Taxonomy ==
== Taxonomy ==


''Sesarmops'' was defined in 1970 when Serène and Soh re-organised the existing genus ''[[Sesarma]]''. They included five species: ''S. atrorubens'', ''S. impressus'', ''S. intermedius'', ''S. mindanaoensis'', ''S. sinensis''.<ref name="Li2020" />
''Sesarmops'' was defined in 1970 when Serène and Soh re-organised the existing [[genus]] ''[[Sesarma]]''. They included five [[species]]: ''S. atrorubens'', ''S. impressus'', ''S. intermedius'', ''S. mindanaoensis'', ''S. sinensis''.<ref name="Li2020" />

Serène and Soh defined ''Sesarmops'' as having (1) the [[carapace]] as long or longer than the width measured at the external orbital teeth, (2) the frontal margin has a deep median concavity, (3) the postfrontal lobes are prominent, (4) the external orbital tooth is clearly separated from the rest of the lateral margin by a distinct cleft, (5) with the [[gastric]] and [[Cardiac region|cardiac regions]] well defined.<ref>{{Cite journal |last=Peter |first=K L Ng |date=Jul 2020 |title=What is Sesarmops impressus (H. Milne Edwards, 1837) (Crustacea: Brachyura: Sesarmidae)? |url=https://pmc.ncbi.nlm.nih.gov/articles/PMC7688423/ |journal=Zoological Studies}}</ref>


Ng et al. provisionally added ''Sesarma weberi'' in 2008,<ref name="Li2020" /> Paulay and Starmer (2011) transferred ''Sesarma angustifrons'' to the genus in 2011.<ref name="Ng2020" />
Ng et al. provisionally added ''Sesarma weberi'' in 2008,<ref name="Li2020" /> Paulay and Starmer (2011) transferred ''Sesarma angustifrons'' to the genus in 2011.<ref name="Ng2020" />


Culminating work through the 2000s and 2010s, the genus was revised in January and December 2020. Species were split and redefined, and two species were transferred to a new genus.
As a culmination of work through the 2000s and 2010s, the genus was revised in January and December 2020. Species were split and redefined, while two species were transferred to a new genus.


The type species ''Sesarmops impressum'' (formerly ''Sesarma impressa'') and related species were reviewed by Ng et al. in 2020.<ref name="Ng2020" /> ''S. impressa'' ''sensu lato'' from the West Pacific have different colouration and gonopods to those of the Indian Ocean. Ng, Li, & Shih restricted ''S. impressesus'' to the west Indian Ocean populations, defining ''S. indicus'' in the East Indian and ''S. imperator'' in the West Pacific oceans. The type locality for ''S. indicus'' is the Andaman Islands, records from northern Sumatra, Mentawei Islands and Engano Islands are provisionally referred to the same species.
The type species ''Sesarmops impressum'' (formerly ''Sesarma impressa'') and related species were reviewed by Ng et al. in 2020.<ref name="Ng2020" /> ''S. impressa'' ''sensu lato'' from the West Pacific have different [[Coloration morph|colouration]] and [[Gonopod|gonopods]] to those of the [[Indian Ocean]]. Ng, Li, & Shih restricted ''S. impressesus'' to the West Indian Ocean populations, defining ''S. indicus'' in the East Indian and ''S. imperator'' in the [[West Pacific]] oceans. The [[Type locality (biology)|type locality]] for ''S. indicus'' is the [[Andaman Islands]], records from [[Northern Sumatra]], [[Mentawai Islands Regency]], and [[Enggano Island|Enggano Islands]] are provisionally referred to as the same species.


Hess's original types, from "Sydney", for ''S. atrorubens'' and ''S. similis'' are lost. Scholars believe that he received the specimens via [[Sydney]], and that they were collected elsewhere. Ng et al. designated neotypes from Fiji and Samoa, respectively.<ref name="Ng2020" />
Hess's original types, from "Sydney", for ''S. atrorubens'' and ''S. similis'' are lost. Scholars believe that he received the specimens via [[Sydney]], and that they were collected elsewhere. Ng et al. designated neotypes from [[Fiji]] and [[Samoa]], respectively.<ref name="Ng2020" />


Comparisons of mitochondrial DNA found that ''S. impressus'' and ''S. imperator'' form a clade sister to ''Bresedium eurypleon'' and ''B. brevipes'', indicating that ''Sesarmops'' is paraphyletic to ''[[Bresedium]]''.<ref name="Ng2020" /> ''S. mora'' is sister to the impressum–Bresidium clade, whilst the ''Sesarmops intermedius'' complex, ''Pseudosesarma patshuni'', and the ''Chiromantes dehaani'' complex form another grouping. ''S. mindanaoensis'' was found to be more distantly related than the other ''Pseudosesarma'' species (''edwardsii, boucourtii, crassimarum'').<ref name="Li2020" /> The latter group (''intermedius–patshuni–dehaani'') was re-classified into a new genus ''[[Orisarma]]'' by Schubart & Ng (2020), having five species.<ref name="Schubart & Ng 2020" />
Comparisons of [[mitochondrial DNA]] found that ''S. impressus'' and ''S. imperator'' form a [[clade]] sister to ''Bresedium eurypleon'' and ''B. brevipes'', indicating that ''Sesarmops'' is [[paraphyletic]] to ''[[https://species.wikimedia.org/wiki/Bresedium|Bresedium]]''.<ref name="Ng2020" /> ''S. mora'' is sister to the impressum–Bresidium clade, whilst the ''Sesarmops intermedius'' complex, ''Pseudosesarma patshuni'', and the ''Chiromantes dehaani'' complex form another grouping. ''S. mindanaoensis'' was found to be more distantly related than the other ''Pseudosesarma'' species (''edwardsii, boucourtii, crassimarum'').<ref name="Li2020" /> The latter group (''intermedius–patshuni–dehaani'') was re-classified into a new genus ''[[Orisarma]]'' by Schubart & Ng (2020), having five species.<ref name="Schubart & Ng 2020" />


== Species ==
== Species ==


As at 2023, the World Register of Marine Species recognises 9 species of ''Sesarmops'', with two former species moved to ''Orisarma''.<ref name="DecanetSesarmops" />
As at 2023, the [[World Register of Marine Species]] recognises 9 species of ''Sesarmops'', with two former species moved to ''Orisarma''.<ref name="DecanetSesarmops" />


* ''[[Sesarmops angustifrons]]'' ([[A. Milne-Edwards]], 1869)
* ''[[Sesarmops angustifrons]]'' ([[A. Milne-Edwards]], 1869)
* ''[[Sesarmops atrorubens]]'' ({{Interlanguage link|Wilhelm Hess|de|Wilhelm Heß (Zoologe)|fr|Wilhelm Heß (zoologiste)|lt=Hess}}, 1865)<ref name="Hess1865" />{{Rp|149}} – [[Fiji]].<ref name="Ng2020" />
* ''[[Sesarmops atrorubens]]'' (1865)<ref name="Hess1865" />{{Rp|149}} – [[Fiji]].<ref name="Ng2020" />
* ''[[Sesarmops imperator]]'' Ng, Li & Shih, 2020 – East Asia to Taiwan and Ryukyus.
* ''[[Sesarmops imperator]]'' Ng, Li & Shih, 2020 – East Asia to [[Taiwan]] and [[Ryukyus]].
* ''[[Sesarmops impressus]]'' ([[H. Milne Edwards]], 1837) – [[Madagascar (island)|Madagascar]], [[Comoro Islands|Comoros]], [[Mayotte]].
* ''[[Sesarmops impressus]]'' ([[H. Milne Edwards]], 1837) – [[Madagascar (island)|Madagascar]], [[Comoro Islands|Comoros]], [[Mayotte]].
* ''[[Sesarmops indicus]]'' Ng, Li & Shih, 2020 – [[Andaman Islands]]. Possibly north [[Sumatra]] and nearby islands.
* ''[[Sesarmops indicus]]'' Ng, Li & Shih, 2020 – [[Andaman Islands]]. Possibly north [[Sumatra]] and nearby islands.
* ''Sesarmops intermedius'' = ''[[Orisarma intermedium]]'' ([[Wilhem de Haan|De Haan]], 1835)<ref name=deHaan />
* ''[[Sesarmops intermedius]]'' = ''Orisarma intermedium'' ([[Wilhem de Haan|De Haan]], 1835)<ref name=deHaan />
* ''[[Sesarmops mindanaoensis]]'' ([[Mary J. Rathbun|Rathbun]], 1914) – Taiwan ([[Pingtung County|Pingtung]]) and Philippines ([[Cebu]] and [[Bohol]])<ref name="Li2020" />
* ''[[Sesarmops mindanaoensis]]'' ([[Mary J. Rathbun|Rathbun]], 1914) – Taiwan ([[Pingtung County|Pingtung]]) and [[Philippines]] ([[Cebu]] and [[Bohol]])<ref name="Li2020" />
* ''[[Sesarmops mora]]'' Li, Shih & Ng, 2020 – Taiwan (Pingtung), Philippines (Cebu and Bohol), Indonesia ([[Sulawesi]] and [[Manado Tua|Manado]])<ref name="Li2020" />
* ''[[Sesarmops mora]]'' Li, Shih & Ng, 2020 – Taiwan (Pingtung), Philippines (Cebu and Bohol), Indonesia ([[Sulawesi]] and [[Manado Tua|Manado]])<ref name="Li2020" />
* ''[[Sesarmops similis]]'' (Hess, 1865)<ref name="Hess1865" />{{Rp|149}} – [[Samoa]].<ref name="Ng2020" />
* ''[[Sesarmops similis]]'' (Hess, 1865)<ref name="Hess1865" />{{Rp|149}} – [[Samoa]].<ref name="Ng2020" />
* ''Sesarmops sinensis'' = ''[[Orisarma sinense]]'' (H. Milne Edwards, 1853)
* ''[[Sesarmops sinensis]]'' = ''Orisarma sinense'' ([[Henri Milne-Edwards|H. Milne Edwards]], 1853)
* ''[[Sesarmops weberi]]'' ([[Johannes Govertus de Man|De Man]], 1892)
* ''[[Sesarmops weberi]]'' ([[Johannes Govertus de Man|De Man]], 1892)


== References ==
== References ==
{{Reflist|refs=
{{Reflist|refs=
<ref name="Ng2020">{{cite journal |last1=Ng |first1=Peter K. L. |last2=Li |first2=Jheng-Jhang |last3=Shih |first3=Hsi-Te |title=What is Sesarmops impressus (H. Milne Edwards, 1837) (Crustacea: Brachyura: Sesarmidae)? |journal=Zoological Studies |date=1 January 2020 |volume=59 |page=27 |doi=10.6620/ZS.2020.59-27 |url=https://www.researchgate.net/publication/342841693_What_is_Sesarmops_impressus_H_Milne_Edwards_1837_Crustacea_Brachyura_Sesarmidae |access-date=4 November 2023}}</ref>
<ref name="Ng2020">{{cite journal |last1=Ng |first1=Peter K. L. |last2=Li |first2=Jheng-Jhang |last3=Shih |first3=Hsi-Te |title=What is Sesarmops impressus (H. Milne Edwards, 1837) (Crustacea: Brachyura: Sesarmidae)? |journal=Zoological Studies |date=1 January 2020 |volume=59 |issue=59 |page=27 |doi=10.6620/ZS.2020.59-27 |pmid=33262850 |pmc=7688423 |url=https://www.researchgate.net/publication/342841693 |access-date=4 November 2023}}</ref>
<ref name="Li2020">{{cite journal |last1=Li |first1=Jheng-Jhang |last2=Shih |first2=Shih-Te |last3=Ng |first3=Peter K. L. |title=The Taiwanese and Philippine Species of the Terrestrial Crabs Bresedium Serène and Soh, 1970 and Sesarmops Serène and Soh, 1970 (Crustacea: Decapoda: Brachyura), with Descriptions of Two New Species |journal=Zoological Studies |date=1 January 2020 |volume=59 |issue=16 |doi=10.6620/ZS.2020.59-16 |url=https://zoolstud.sinica.edu.tw/Journals/59/59-16.pdf}} [https://zoolstud.sinica.edu.tw/Journals/59/59-16.pdf] [https://www.researchgate.net/publication/348201589_The_Taiwanese_and_Philippine_Species_of_the_Terrestrial_Crabs_Bresedium_Serene_and_Soh_1970_and_Sesarmops_Serene_and_Soh_1970_Crustacea_Decapoda_Brachyura_with_Descriptions_of_Two_New_Species] </ref>
<ref name="Li2020">{{cite journal |last1=Li |first1=Jheng-Jhang |last2=Shih |first2=Shih-Te |last3=Ng |first3=Peter K. L. |title=The Taiwanese and Philippine Species of the Terrestrial Crabs Bresedium Serène and Soh, 1970 and Sesarmops Serène and Soh, 1970 (Crustacea: Decapoda: Brachyura), with Descriptions of Two New Species |journal=Zoological Studies |date=1 January 2020 |volume=59 |issue=16 |pages=e16 |doi=10.6620/ZS.2020.59-16 |pmid=33262840 |pmc=7688406 |url=https://zoolstud.sinica.edu.tw/Journals/59/59-16.pdf}} [https://zoolstud.sinica.edu.tw/Journals/59/59-16.pdf] [https://www.researchgate.net/publication/348201589_The_Taiwanese_and_Philippine_Species_of_the_Terrestrial_Crabs_Bresedium_Serene_and_Soh_1970_and_Sesarmops_Serene_and_Soh_1970_Crustacea_Decapoda_Brachyura_with_Descriptions_of_Two_New_Species]</ref>
<ref name=DecanetSesarmops> DecaNet eds. (2023). DecaNet. Sesarmops Serène & Soh, 1970. Accessed through: World Register of Marine Species at: https://www.marinespecies.org/aphia.php?p=taxdetails&id=205690 on 2023-11-04</ref>
<ref name=DecanetSesarmops>DecaNet eds. (2023). DecaNet. Sesarmops Serène & Soh, 1970. Accessed through: World Register of Marine Species at: https://www.marinespecies.org/aphia.php?p=taxdetails&id=205690 on 2023-11-04</ref>
<ref name=deHaan>{{cite book |last1=de Haan |first1=W. (Wilhem) |title=Crustacea, vol. 1 in [[Fauna Japonica]] |date=1833–1850 |lang=la}} [https://www.biodiversitylibrary.org/bibliography/124951 BHL] [[d:Q122586122]] ''Grapsus (Pachysoma) intermedius'' is on [https://www.biodiversitylibrary.org/item/217507#page/147/mode/1up p. 61] and [https://www.biodiversitylibrary.org/item/217507#page/369/mode/1up tableau XVI] fig. 5</ref>
<ref name=deHaan>{{cite book |last1=de Haan |first1=W. (Wilhem) |title=Crustacea, vol. 1 in [[Fauna Japonica]] |date=1833–1850 |language=la}} [https://www.biodiversitylibrary.org/bibliography/124951 BHL] [[d:Q122586122]] ''Grapsus (Pachysoma) intermedius'' is on [https://www.biodiversitylibrary.org/item/217507#page/147/mode/1up p. 61] and [https://www.biodiversitylibrary.org/item/217507#page/369/mode/1up tableau XVI] fig. 5</ref>
<ref name="Hess1865">{{cite journal |last1=Hess |first1=Wilhelm |title=Beiträge zur Kenntnis der Decapoden-Krebse Ost-Australiens |journal=Archiv für Naturgeschichte |volume=31 |pages=127–173 |lang=de}} [https://www.marinespecies.org/aphia.php?p=sourceget&id=132294 marinespecies][https://www.biodiversitylibrary.org/part/15862 BHL]</ref>
<ref name="Hess1865">{{cite journal |last1=Hess |first1=Wilhelm |title=Beiträge zur Kenntnis der Decapoden-Krebse Ost-Australiens |journal=Archiv für Naturgeschichte |date=1865 |volume=31 |pages=127–173 |doi=10.5962/bhl.part.15862 |language=de}} [https://www.marinespecies.org/aphia.php?p=sourceget&id=132294 marinespecies][https://www.biodiversitylibrary.org/part/15862 BHL]</ref>


<ref name="Schubart & Ng 2020">{{cite journal |last1=Schubart |first1=Christoph D. |last2=Ng |first2=Peter K. L. |title=Revision of the intertidal and semiterrestrial crab genera Chiromantes Gistel, 1848, and Pseudosesarma Serène & Soh, 1970 (Crustacea: Brachyura: Sesarmidae), using morphology and molecular phylogenetics, with the establishment of nine new genera and two new species |journal=Raffles Bulletin of Zoology |volume=68 |pages=891-994 |date=2020-12-23 |doi=10.26107/RBZ-2020-0097 |url=https://lkcnhm.nus.edu.sg/wp-content/uploads/sites/10/2020/12/RBZ-2020-0097.pdf}} [https://lkcnhm.nus.edu.sg/wp-content/uploads/sites/10/2020/12/RBZ-2020-0097.pdf NUS] [https://www.researchgate.net/publication/352551442_Revision_of_the_intertidal_and_semiterrestrial_crab_genera_Chiromantes_Gistel_1848_and_Pseudosesarma_Serene_Soh_1970_Crustacea_Brachyura_Sesarmidae_using_morphology_and_molecular_phylogenetics_with_th RG]</ref>
<ref name="Schubart & Ng 2020">{{cite journal |last1=Schubart |first1=Christoph D. |last2=Ng |first2=Peter K. L. |title=Revision of the intertidal and semiterrestrial crab genera Chiromantes Gistel, 1848, and Pseudosesarma Serène & Soh, 1970 (Crustacea: Brachyura: Sesarmidae), using morphology and molecular phylogenetics, with the establishment of nine new genera and two new species |journal=Raffles Bulletin of Zoology |volume=68 |pages=891–994 |date=2020-12-23 |issue=452 |doi=10.26107/RBZ-2020-0097 |url=https://lkcnhm.nus.edu.sg/wp-content/uploads/sites/10/2020/12/RBZ-2020-0097.pdf}} [https://lkcnhm.nus.edu.sg/wp-content/uploads/sites/10/2020/12/RBZ-2020-0097.pdf NUS] [https://www.researchgate.net/publication/352551442_Revision_of_the_intertidal_and_semiterrestrial_crab_genera_Chiromantes_Gistel_1848_and_Pseudosesarma_Serene_Soh_1970_Crustacea_Brachyura_Sesarmidae_using_morphology_and_molecular_phylogenetics_with_th RG]</ref>
}}
}}

== External links ==
{{Wikispecies}}
{{Commons}}


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{{Taxonbar|from=Q18579957}}
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{{improve categories|date=November 2023}}


[[Category:Sesarmidae]]
[[Category:Sesarmidae]]
[[Category:Decapod genera]]
[[Category:Decapod genera]]
[[Category:Terrestrial crustaceans]]
[[Category:Terrestrial crustaceans]]

{{crab-stub}}
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{{improve categories|date=November 2023}}

Latest revision as of 13:01, 8 December 2024

Sesarmops
Sesarmops imperator
Scientific classification Edit this classification
Domain: Eukaryota
Kingdom: Animalia
Phylum: Arthropoda
Class: Malacostraca
Order: Decapoda
Suborder: Pleocyemata
Infraorder: Brachyura
Family: Sesarmidae
Genus: Sesarmops
Serène & Soh, 1970

Sesarmops is a genus of crabs in the family Sesarmidae. Its members are distributed through the Indo-West-Pacific oceanic region. They live in freshwater forest streams near the coast, and in mangroves.

Taxonomy

[edit]

Sesarmops was defined in 1970 when Serène and Soh re-organised the existing genus Sesarma. They included five species: S. atrorubens, S. impressus, S. intermedius, S. mindanaoensis, S. sinensis.[1]

Serène and Soh defined Sesarmops as having (1) the carapace as long or longer than the width measured at the external orbital teeth, (2) the frontal margin has a deep median concavity, (3) the postfrontal lobes are prominent, (4) the external orbital tooth is clearly separated from the rest of the lateral margin by a distinct cleft, (5) with the gastric and cardiac regions well defined.[2]

Ng et al. provisionally added Sesarma weberi in 2008,[1] Paulay and Starmer (2011) transferred Sesarma angustifrons to the genus in 2011.[3]

As a culmination of work through the 2000s and 2010s, the genus was revised in January and December 2020. Species were split and redefined, while two species were transferred to a new genus.

The type species Sesarmops impressum (formerly Sesarma impressa) and related species were reviewed by Ng et al. in 2020.[3] S. impressa sensu lato from the West Pacific have different colouration and gonopods to those of the Indian Ocean. Ng, Li, & Shih restricted S. impressesus to the West Indian Ocean populations, defining S. indicus in the East Indian and S. imperator in the West Pacific oceans. The type locality for S. indicus is the Andaman Islands, records from Northern Sumatra, Mentawai Islands Regency, and Enggano Islands are provisionally referred to as the same species.

Hess's original types, from "Sydney", for S. atrorubens and S. similis are lost. Scholars believe that he received the specimens via Sydney, and that they were collected elsewhere. Ng et al. designated neotypes from Fiji and Samoa, respectively.[3]

Comparisons of mitochondrial DNA found that S. impressus and S. imperator form a clade sister to Bresedium eurypleon and B. brevipes, indicating that Sesarmops is paraphyletic to [[3]].[3] S. mora is sister to the impressum–Bresidium clade, whilst the Sesarmops intermedius complex, Pseudosesarma patshuni, and the Chiromantes dehaani complex form another grouping. S. mindanaoensis was found to be more distantly related than the other Pseudosesarma species (edwardsii, boucourtii, crassimarum).[1] The latter group (intermedius–patshuni–dehaani) was re-classified into a new genus Orisarma by Schubart & Ng (2020), having five species.[4]

Species

[edit]

As at 2023, the World Register of Marine Species recognises 9 species of Sesarmops, with two former species moved to Orisarma.[5]

References

[edit]
  1. ^ a b c d e Li, Jheng-Jhang; Shih, Shih-Te; Ng, Peter K. L. (1 January 2020). "The Taiwanese and Philippine Species of the Terrestrial Crabs Bresedium Serène and Soh, 1970 and Sesarmops Serène and Soh, 1970 (Crustacea: Decapoda: Brachyura), with Descriptions of Two New Species" (PDF). Zoological Studies. 59 (16): e16. doi:10.6620/ZS.2020.59-16. PMC 7688406. PMID 33262840. [1] [2]
  2. ^ Peter, K L Ng (Jul 2020). "What is Sesarmops impressus (H. Milne Edwards, 1837) (Crustacea: Brachyura: Sesarmidae)?". Zoological Studies.
  3. ^ a b c d e f Ng, Peter K. L.; Li, Jheng-Jhang; Shih, Hsi-Te (1 January 2020). "What is Sesarmops impressus (H. Milne Edwards, 1837) (Crustacea: Brachyura: Sesarmidae)?". Zoological Studies. 59 (59): 27. doi:10.6620/ZS.2020.59-27. PMC 7688423. PMID 33262850. Retrieved 4 November 2023.
  4. ^ Schubart, Christoph D.; Ng, Peter K. L. (2020-12-23). "Revision of the intertidal and semiterrestrial crab genera Chiromantes Gistel, 1848, and Pseudosesarma Serène & Soh, 1970 (Crustacea: Brachyura: Sesarmidae), using morphology and molecular phylogenetics, with the establishment of nine new genera and two new species" (PDF). Raffles Bulletin of Zoology. 68 (452): 891–994. doi:10.26107/RBZ-2020-0097. NUS RG
  5. ^ DecaNet eds. (2023). DecaNet. Sesarmops Serène & Soh, 1970. Accessed through: World Register of Marine Species at: https://www.marinespecies.org/aphia.php?p=taxdetails&id=205690 on 2023-11-04
  6. ^ a b Hess, Wilhelm (1865). "Beiträge zur Kenntnis der Decapoden-Krebse Ost-Australiens". Archiv für Naturgeschichte (in German). 31: 127–173. doi:10.5962/bhl.part.15862. marinespeciesBHL
  7. ^ de Haan, W. (Wilhem) (1833–1850). Crustacea, vol. 1 in Fauna Japonica (in Latin). BHL d:Q122586122 Grapsus (Pachysoma) intermedius is on p. 61 and tableau XVI fig. 5


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