Gecarcinus

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Perger R, Wall A (2014) The description of a new species of the Neotropical land crab genus Gecarcinus Leach, 1814 (Crustacea, Decapoda, Brachyura, Gecarcinidae). ZooKeys 435 : 93–109, doi. Versioned wiki page: 2014-08-18, version 63619, https://species-id.net/w/index.php?title=Gecarcinus&oldid=63619 , contributors (alphabetical order): Pensoft Publishers.

Citation formats to copy and paste

BibTeX:

@article{Perger2014ZooKeys435,
author = {Perger, Robert AND Wall, Adam},
journal = {ZooKeys},
publisher = {Pensoft Publishers},
title = {The description of a new species of the Neotropical land crab genus Gecarcinus Leach, 1814 (Crustacea, Decapoda, Brachyura, Gecarcinidae)},
year = {2014},
volume = {435},
issue = {},
pages = {93--109},
doi = {10.3897/zookeys.435.7271},
url = {http://www.pensoft.net/journals/zookeys/article/7271/abstract},
note = {Versioned wiki page: 2014-08-18, version 63619, https://species-id.net/w/index.php?title=Gecarcinus&oldid=63619 , contributors (alphabetical order): Pensoft Publishers.}

}

RIS/ Endnote:

TY - JOUR
T1 - The description of a new species of the Neotropical land crab genus Gecarcinus Leach, 1814 (Crustacea, Decapoda, Brachyura, Gecarcinidae)
A1 - Perger R
A1 - Wall A
Y1 - 2014
JF - ZooKeys
JA -
VL - 435
IS -
UR - http://dx.doi.org/10.3897/zookeys.435.7271
SP - 93
EP - 109
PB - Pensoft Publishers
M1 - Versioned wiki page: 2014-08-18, version 63619, https://species-id.net/w/index.php?title=Gecarcinus&oldid=63619 , contributors (alphabetical order): Pensoft Publishers.

M3 - doi:10.3897/zookeys.435.7271

Wikipedia/ Citizendium:

<ref name="Perger2014ZooKeys435">{{Citation
| author = Perger R, Wall A
| title = The description of a new species of the Neotropical land crab genus Gecarcinus Leach, 1814 (Crustacea, Decapoda, Brachyura, Gecarcinidae)
| journal = ZooKeys
| year = 2014
| volume = 435
| issue =
| pages = 93--109
| pmid =
| publisher = Pensoft Publishers
| doi = 10.3897/zookeys.435.7271
| url = http://www.pensoft.net/journals/zookeys/article/7271/abstract
| pmc =
| accessdate = 2025-03-06

}} Versioned wiki page: 2014-08-18, version 63619, https://species-id.net/w/index.php?title=Gecarcinus&oldid=63619 , contributors (alphabetical order): Pensoft Publishers.</ref>

See also the citation download page at the journal.


Taxonavigation

Ordo: Decapoda
Familia: Gecarcinidae

Name

Gecarcinus Leach, 1814 – Wikispecies link – Pensoft Profile

  • Gecarcinus Leach, 1814: 430.

Type species

Cancer ruricola Linnaeus, 1758 (original combination).

Diagnosis

Exopod not projecting beyond third maxilliped ischium-merus articulation, without flagellum; palp concealed by third maxilliped merus margin. Mesial segment of first male gonopod distally reduced and terminal segment basally exposed, terminal segment projecting beyond apical setae.

Remarks

Because further evidence challenging Türkay’s (1973)[1] synonymization of Gecarcinus quadratus with Gecarcinus lateralis has not been presented to date, we follow his taxonomy and treat Gecarcinus quadratus, described from the Pacific mainland, as a junior synonym of Gecarcinus lateralis.

Key to the species of Gecarcinus Leach, 1814

Key to the species of Gecarcinus Leach, 1814 — R. Perger , A. Wall
1
Mesial lobe of infraorbital margin curved around ventrolateral edge of carapace front. Third maxilliped merus covers epistome and can reach carapace front. Spines on lateral carina of dactylus and carpus of ambulatory legs prominently developed in adults 
  Gecarcinus ruricola (Linnaeus)
–
Contact between carapace front and mesial lobe of infraorbital margin straight (Fig. 2B, C). Third maxilliped merus at the farthest reaching epistome. Spines on lateral carina of dactylus and carpus of ambulatory legs weakly developed to absent 
  2
2
Carapace front wider than distance between mesial ends of suborbital cristae (Figs 2C; 3B). Width of mesial lobe of infraorbital margin at point of contact with carapace front longer than shortest distance between carapace front and mesial end of suborbital crista (Figs 2C; 3B). Light lateral margin on dorsal carapace without lighter anterolateral and posterior patches (Figs 4C; 5D) 
  Gecarcinus nobilii sp. n.
–
Carapace front about as wide as distance between mesial ends of suborbital cristae (Figs 2B; 6B, E). Width of mesial lobe of infraorbital margin at point of contact with carapace front shorter than shortest distance between carapace front and mesial end of suborbital crista (Figs 2B; 6B, E). Without light lateral margin on dorsal carapace (Pacific, Fig. 5A; Atlantic, Fig. 5C) or with light lateral margin with anterior and posterior yellow to orange patches (Atlantic, Fig. 5B) 
  Gecarcinus lateralis (Fréminville)

Taxon Treatment

  • Perger, R; Wall, A; 2014: The description of a new species of the Neotropical land crab genus Gecarcinus Leach, 1814 (Crustacea, Decapoda, Brachyura, Gecarcinidae) ZooKeys, 435: 93-109. doi

Images

Figure 1. A Central and South America B Study area with locations of examined Pacific (red) and Atlantic (orange) Gecarcinus lateralis (Freminville, 1835) (sensu Türkay 1973[1]) and Gecarcinus nobilii sp. n. (green). Nicaragua, Pacific coast: (1) Rivas, San Juan del Sur. Costa Rica, Pacific coast, Puntarenas dept.: (2) Pochote Beach; (3) Hermosa Beach; (4) Drake Bay. Panama, Pacific coast: (5) Veraguas, Santa Catalina. Costa Rica, Atlantic coast, Limón dept.: (6) Parismina; (7) Puerto Viejo; (8) Manzanillo; (9) Punta Mona. Panama, Atlantic coast: (10) Bocas del Toro, Bluff Beach; (11) Colón, Maria Chiquita. Gecarcinus nobilii sp. n.: Colombia, Pacific coast: (12) Choco, Nuquí; (13) Buenaventura, Chucheros Beach; (14) Gorgona Island. Ecuador: (15) Esmeraldas, Punta Galera (type location); (16) Manabí, Ayampe; (17) Plata Island; (18) Santa Elena.
Figure 1. A Central and South America B Study area with locations of examined Pacific (red) and Atlantic (orange) Gecarcinus lateralis (Freminville, 1835) (sensu Türkay 1973[1]) and Gecarcinus nobilii sp. n. (green). Nicaragua, Pacific coast: (1) Rivas, San Juan del Sur. Costa Rica, Pacific coast, Puntarenas dept.: (2) Pochote Beach; (3) Hermosa Beach; (4) Drake Bay. Panama, Pacific coast: (5) Veraguas, Santa Catalina. Costa Rica, Atlantic coast, Limón dept.: (6) Parismina; (7) Puerto Viejo; (8) Manzanillo; (9) Punta Mona. Panama, Atlantic coast: (10) Bocas del Toro, Bluff Beach; (11) Colón, Maria Chiquita. Gecarcinus nobilii sp. n.: Colombia, Pacific coast: (12) Choco, Nuquí; (13) Buenaventura, Chucheros Beach; (14) Gorgona Island. Ecuador: (15) Esmeraldas, Punta Galera (type location); (16) Manabí, Ayampe; (17) Plata Island; (18) Santa Elena. 
Figure 2. (CF) Carapace front; (O) orbit; (IOM) mesial lobe of infraorbital margin; (x) widest width of CF; (z) mesial end of suborbital crista; (x–y) width of IOM at point of contact with CF; (y–z) shortest distance between CF and mesial end of suborbital crista; A, B Atlantic Gecarcinus lateralis (Freminville 1835[2]), male, carapace width (CW) 31 mm, Costa Rica, Puerto Viejo C Gecarcinus nobilii sp. n., holotype, male, CW 31 mm, Ecuador, Punta Galera (LACM CR 1968-477). First male gonopod: Gecarcinus nobilii sp. n., holotype: D mesial view E lateral view F Pacific Gecarcinus lateralis (sensu Türkay 1973[1]), CW 31 mm, Costa Rica, Hermosa Beach, lateral view; Scale bar = 5 mm.
Figure 2. (CF) Carapace front; (O) orbit; (IOM) mesial lobe of infraorbital margin; (x) widest width of CF; (z) mesial end of suborbital crista; (x–y) width of IOM at point of contact with CF; (y–z) shortest distance between CF and mesial end of suborbital crista; A, B Atlantic Gecarcinus lateralis (Freminville 1835[2]), male, carapace width (CW) 31 mm, Costa Rica, Puerto Viejo C Gecarcinus nobilii sp. n., holotype, male, CW 31 mm, Ecuador, Punta Galera (LACM CR 1968-477). First male gonopod: Gecarcinus nobilii sp. n., holotype: D mesial view E lateral view F Pacific Gecarcinus lateralis (sensu Türkay 1973[1]), CW 31 mm, Costa Rica, Hermosa Beach, lateral view; Scale bar = 5 mm. 
Figure 3. Gecarcinus nobilii sp. n., holotype, male, carapace width 31 mm, Ecuador, Punta Galera (LACM CR 1968-477), preserved in alcohol (color faded): A dorsal view B frontal view C ventral view. Paratype, female, Ecuador, St. Elena (MNHN, B12314), preserved in alcohol (color faded): D carapace front E frontal view F ventral view.
Figure 3. Gecarcinus nobilii sp. n., holotype, male, carapace width 31 mm, Ecuador, Punta Galera (LACM CR 1968-477), preserved in alcohol (color faded): A dorsal view B frontal view C ventral view. Paratype, female, Ecuador, St. Elena (MNHN, B12314), preserved in alcohol (color faded): D carapace front E frontal view F ventral view. 
Figure 4. Gecarcinus nobilii sp. n., color in life; Colombia: Gorgona Island A male, photo by Karla Garcia Burneo (Peru) B, C male, photos by Rhett A. Butler (USA) D female, Buenaventura dept., Chucheros Beach, photo by Elena Gómez E sex unknown, Chocó dept., Nuquí prov., Canangucho Forest Reserve. Ecuador: F sex unknown, Manabí prov., Ayampe, photo by David Liebman (USA). Captive individuals from the pet trade, origin unknown: G sex unknown, photo by Oliver Mengedoht (Germany) H, I females, photos by John Beatty (USA) (the individual shown above in Fig. 1 belongs to the Pacific population of Gecarcinus lateralis (sensu Türkay 1973[1]), please note the differences in the mesial lobe of the infraorbital margin).
Figure 4. Gecarcinus nobilii sp. n., color in life; Colombia: Gorgona Island A male, photo by Karla Garcia Burneo (Peru) B, C male, photos by Rhett A. Butler (USA) D female, Buenaventura dept., Chucheros Beach, photo by Elena Gómez E sex unknown, Chocó dept., Nuquí prov., Canangucho Forest Reserve. Ecuador: F sex unknown, Manabí prov., Ayampe, photo by David Liebman (USA). Captive individuals from the pet trade, origin unknown: G sex unknown, photo by Oliver Mengedoht (Germany) H, I females, photos by John Beatty (USA) (the individual shown above in Fig. 1 belongs to the Pacific population of Gecarcinus lateralis (sensu Türkay 1973[1]), please note the differences in the mesial lobe of the infraorbital margin). 
Figure 5. Dorsal carapace pattern (shape of light patches could vary slightly): Gecarcinus lateralis (Freminville 1835[2]) (sensu Türkay 1973[1]): A Pacific coast of Central America. Atlantic coast of Central America: B form with lateral margin (M) on dorsal carapace and orange patches at anterolateral (AP) and posterior (PP) carapace border; C form without lateral margin on dorsal carapace D Gecarcinus nobilii sp. n.
Figure 5. Dorsal carapace pattern (shape of light patches could vary slightly): Gecarcinus lateralis (Freminville 1835[2]) (sensu Türkay 1973[1]): A Pacific coast of Central America. Atlantic coast of Central America: B form with lateral margin (M) on dorsal carapace and orange patches at anterolateral (AP) and posterior (PP) carapace border; C form without lateral margin on dorsal carapace D Gecarcinus nobilii sp. n. 
Figure 6. A–C lectotype of Gecarcinus lateralis (Freminville, 1835), male, carapace width 47.2 mm, Guadeloupe (MNHN-3758) (dried specimen, color faded) D–F syntype of Gecarcinus quadratus Saussure, 1853, male, carapace width 39.7 mm, Mexico, Mazatlan (ANSP-CA3741) (dried specimen, color faded) (photos by Paul Callomon, Academy of Natural Sciences of Drexel University, Philadelphia).
Figure 6. A–C lectotype of Gecarcinus lateralis (Freminville, 1835), male, carapace width 47.2 mm, Guadeloupe (MNHN-3758) (dried specimen, color faded) D–F syntype of Gecarcinus quadratus Saussure, 1853, male, carapace width 39.7 mm, Mexico, Mazatlan (ANSP-CA3741) (dried specimen, color faded) (photos by Paul Callomon, Academy of Natural Sciences of Drexel University, Philadelphia). 

Other References

  1. ↑ 1.0 1.1 1.2 1.3 1.4 Türkay M (1973) Bemerkungen zu einigen Landkrabben. Bulletin du Museum D'Histoire Naturelle, Paris 142(3): 969–980.
  2. ↑ 2.0 2.1 Freminville M (1835) Notice sur les tourlourouxou crabes de terre des Antilles. Annales des Sciences Naturelles (2nd series) 3: 213–224.
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