A new species of Munidopsis (Anomura, Galatheoidea, Munidopsidae) from the Gulf of California, western Mexico

Crustaceana ◽  
2013 ◽  
Vol 86 (11) ◽  
pp. 1304-1315 ◽  
Author(s):  
Michel E. Hendrickx ◽  
Manuel Ayón-Parente
Keyword(s):  
New Species ◽  
Gulf Of California ◽  
Anterior Margin ◽  
Distal Portion ◽  
Posterior Half ◽  
Western Mexico ◽  
East Pacific ◽  
Pacific Species ◽  
A New Species

A new species ofMunidopsisWhiteaves, 1784 is described from the SW Gulf of California, western Mexico. The new species differs from all other known species ofMunidopsisof the East Pacific by the presence of numerous antero-posteriorly compressed processes on the carapace, many of which are truncate and with crenulated anterior margin, by its oval-shaped carapace, wider in its posterior half, and by the short, subrectangular, narrow rostrum with an upturned distal portion. It also differs from the East Pacific species and other species ofMunidopsisby the densely pitted carapace and appendages.

A new deep-water species ofEpimeria(Amphipoda: Gammaridea: Epimeriidae) from the continental slope of western Mexico

2012 ◽  
Vol 93 (4) ◽  
pp. 991-997 ◽  
Author(s):  
I. Winfield ◽  
M. Ortiz ◽  
M.E. Hendrickx
Keyword(s):  
New Species ◽  
New Zealand ◽  
Deep Water ◽  
Gulf Of California ◽  
Relative Size ◽  
Western Mexico ◽  
East Pacific ◽  
Deep Water Species ◽  
A New Species ◽  
Water Species

A new species of deep waterEpimeriais described based on material collected in 1526–1586 m depth during the TALUD X expedition in the central Gulf of California, Mexico. It is the sixth species of this genus reported for the East Pacific.Epimeria morroneisp. nov. is morphologically similar toE. norfanziLörz, 2011 (New Zealand, 1268 m depth) andE. coraJ.L. Barnard, 1971 (off Oregon, USA, 2086 m depth).Epimeria morroneisp. nov., however, differs from these two species by a combination of several characters, including: vestigial eyes; multidentate mandibular lacinia mobilis; a distinct setae arrangement in palm and dactylus of gnathopods 1–2; the shape and relative size of coxae 1–5; and the shape of the telson.

First record of Prionocrangon Wood Mason & Alcock, 1891 (Crustacea: Decapoda: Caridea: Crangonidae) in the East Pacific and description of a new species from western Mexico

Zootaxa ◽  
2012 ◽  
Vol 3205 (1) ◽  
pp. 63 ◽  
Author(s):  
MICHEL E. HENDRICKX ◽  
MANUEL AYÓN-PARENTE
Keyword(s):  
New Species ◽  
Larval Development ◽  
Gulf Of California ◽  
First Record ◽  
Abdominal Somite ◽  
Western Mexico ◽  
East Pacific ◽  
A New Species

A new species of the rare genus Prionocrangon is described from the central Gulf of California, Mexico. This is the firstrecord for this genus of Crangonidae in the east Pacific which is otherwise widely distributed in the Atlantic, Pacific andIndian oceans. Prionocrangon incisum sp. nov. differs from all other known species of Prionocrangon by the presence ofa deep notch near the posteroventral margin of the sixth abdominal somite. Presence of post-embryonic larvae in one partly spent female indicates that P. incisum sp. nov. exhibits abbreviated larval development.

Laeonereis watsoni (Annelida, Nereididae), a new species from western Mexico

2017 ◽  
Vol 98 (6) ◽  
pp. 1347-1353 ◽  
Author(s):  
J. A. de León-González ◽  
N. Méndez ◽  
J. G. Navedo
Keyword(s):  
New Species ◽  
Coastal Lagoon ◽  
Anterior Margin ◽  
Pacific Coast ◽  
Coastal Lagoons ◽  
Relative Size ◽  
Mexican Pacific ◽  
Shrimp Farm ◽  
Western Mexico ◽  
A New Species

A new species of Laeonereis from a shrimp farm associated with a subtropical coastal lagoon on the Mexican Pacific coast is described. The new species is characterized by a deep anterior groove on the prostomium, which is shared only with L. culveri. However, longer tentacular cirri extending back to the anterior margin of chaetiger two, the number of papillae of each group on the maxillary ring of the pharynx, and the relative size of the homogomph falcigers in the new species, allow us to separate the two species. Although the species has not been previously detected in the coastal lagoon surrounding the shrimp farm, we postulate that L. watsoni n. sp. is likely to be part of the invertebrate communities of the upper parts of similar coastal lagoons that are common along the tropical coasts of Mexico.

A new xanthid crab of the genus Medaeops Guinot, 1967, from Peninsular Malaysia, with a note on Leptodius granulosus Haswell, 1882 (Crustacea: Decapoda: Brachyura: Xanthidae)

Zootaxa ◽  
2009 ◽  
Vol 2297 (1) ◽  
pp. 44-54 ◽  
Author(s):  
JOSE CHRISTOPHER E. MENDOZA ◽  
V. C. CHONG ◽  
PETER K. L. NG
Keyword(s):  
New Species ◽  
Anterior Margin ◽  
Peninsular Malaysia ◽  
Western Pacific ◽  
Type Material ◽  
Western Coast ◽  
Pacific Species ◽  
A New Species

A new species of Medaeops Guinot, 1967, is described from the western coast of Selangor, Peninsular Malaysia. Medaeops potens new species, is only the second species of the genus known to occur in this region, and is most similar to another relatively common western Pacific species, M. granulosus (Haswell, 1882), particularly by having a cristate anterior margin on the merus of the ambulatory legs. It can easily be distinguished from M. granulosus and other congeners on the characters of the carapace, chelipeds, ambulatory legs and male gonopods. The taxonomy of Leptodius granulosus Haswell, 1882, is also stabilized by the assignment of a lectotype from the existing type material.

scholarly journals Description of a new species of Tetranematichthys (Siluriformes: Auchenipteridae) from the lower Amazon basin, Brazil

2010 ◽  
Vol 8 (1) ◽  
pp. 69-75 ◽  
Author(s):  
Luiz Antônio Wanderley Peixoto ◽  
Wolmar Benjamin Wosiacki
Keyword(s):  
New Species ◽  
Sexual Dimorphism ◽  
Amazon Basin ◽  
Anterior Margin ◽  
Distal Portion ◽  
Interspecific Relationships ◽  
Coloration Pattern ◽  
A New Species

Tetranematichthys barthemi is described from the mouth of the rio Trombetas and related tributaries (rios Saracá and Araticum) and rio Urubu, tributary of the rio Amazon. Tetranematichthys barthemi shares with its congeners the anterior alignment of the mandibular barbels and well-developed portion of the protractor hyoid muscle connected to the mandibular barbel. It is distinguished from these species by a serrated anterior margin on the distal portion of the mandibular barbel, different from the more derived state which is composed of conspicuous digitiform elaboration in the distal portion of the barbel. Tetranematichthys barthemi can also be distinguished from its congeners by combination of characters related to morphometry and coloration pattern. Comments on sexual dimorphism, changes to the extremities of the mandibular barbels and possible interspecific relationships are presented herein.

Species of Scina Prestandrea, 1833 (Amphipoda, Hyperiidea, Scinidae) from western Mexico with the description of a new species from the Gulf of California

Zootaxa ◽  
2020 ◽  
Vol 4803 (2) ◽  
pp. 329-344
Author(s):  
REBECA GASCA ◽  
MICHEL E. HENDRICKX
Keyword(s):  
New Species ◽  
Deep Water ◽  
Gulf Of California ◽  
Common Species ◽  
The Other ◽  
Single Sample ◽  
Western Mexico ◽  
Extensive Survey ◽  
A New Species

Only a few previous surveys of the deep-water planktonic fauna have been accomplished off western Mexico, in particular in the Gulf of California. Samples of pelagic amphipods were obtained between surface and as deep as 2394 m using different gear during an extensive survey in this area. Among these samples, nine species of the genus Scina were recognized, including 78 specimens: 27 males and 51 females. The genus Scina inhabits mesopelagic waters at depths over 200 m, a community that remains largely unknown. The material examined includes a new species, the first reported from the Gulf of California, which is described and compared with its closest congeners, S. setigera Wagler, 1926 and S. parasetigera Zeidler, 1990. These three species share the presence of a long bristle on the base of the dactylus of pereopods 5 and 6. Scina sp. nov. differs from these other two species mainly by: 1) the shape and proportions of pereiopods 1–7; 2) the presence of three inner spiniform elements on uropod 1; 3) the insertion of the exopod on distal 1/3 of uropods. Of the remaining species collected during the survey S. borealis was by far the most abundant and widely distributed, followed by S. wolterecki and S. marginata. The other five species, S. curvidactyla, S. nana, S. pacifica, S. setigera, and S. submarginata, were represented by one or two specimens only. Co-occurence of species of Scina in samples was low with a maximum of four species in a single sample, all associated with S. borealis, the most common species. The distribution of Scina species collected during this survey is briefly discussed. 

A new species of Glyphocrangon (Decapoda: Caridea: Glyphocrangonidae) from off the coast of western Mexico

Zootaxa ◽  
2010 ◽  
Vol 2372 (1) ◽  
pp. 358-366 ◽  
Author(s):  
MICHEL E. HENDRICKX
Keyword(s):  
New Species ◽  
Deep Water ◽  
Distal Part ◽  
Relative Size ◽  
Water Sampling ◽  
Lateral Carina ◽  
Western Mexico ◽  
East Pacific ◽  
Males And Females ◽  
A New Species

A new species of Glyphocrangon has been collected during deep-water sampling off western Mexico, in the east Pacific. The series of specimens, including both males and females, was found between 780 and 1879 m depth. Glyphocrangon sp. nov. is close to G. sicaria Faxon, 1893 and G. vicaria Faxon, 1896, both occurring in the east Pacific. It differs from both species, however, by the absence of tubercles between the lateral carinae, the presence of a large tooth at the anterior end of the second anterior lateral carina, the size of the eye (proportionally smaller in G. vicaria), and the presence of two large rostral lateral teeth (one obsolete in G. sicaria). The new species is, however, strikingly similar to G. fimbriata Komai & Takeuchi, 1994, from the Mid-Pacific Mountains. It differs from the later species by the shape of the male endopod of first pleopod, the relative size and spination of the appendices interna and masculina, the presence of a large lateral tooth on pleura of abdominal somites 3–5, and the absence of curved setae on distal part of the dactyl of pereiopods 3–5.

A new species of Paradella Harrison & Holdich, 1982 (Crustacea: Isopoda: Sphaeromatidae) from Baja California, Mexico, with a key to East Pacific species

Zootaxa ◽  
2007 ◽  
Vol 1512 (1) ◽  
pp. 39-49 ◽  
Author(s):  
REGINA WETZER ◽  
NIEL L. BRUCE
Keyword(s):  
Gulf Of California ◽  
Baja California ◽  
Generic Diagnosis ◽  
Pacific Region ◽  
The Third ◽  
East Pacific ◽  
Lateral Margins ◽  
Fourth Species ◽  
Pacific Species ◽  
A New Species

Paradella garsonorum sp. nov., from the high intertidal of Baja California, Mexico, is described and figured, the fourth species from the East Pacific region, the third species from the Gulf of California. It is distinguished from other species of the genus by both uropodal rami having sinuate lateral and mesial margins that provide a notably attenuated appearance to the male uropodal rami, and the pleon with upturned lateral margins. The generic diagnosis is revised, known species in the genus are listed and a key to the eastern Pacific species provided.

Prionosciadium guzmanianum (Apiaceae, Apioideae), a new species with red flowers from western Mexico

2021 ◽  
Vol 39 (6) ◽  
Author(s):  
Ramón Cuevas‐Guzmán ◽  
Ana Patricia del Castillo‐Batista ◽  
José Guadalupe Morales‐Arias
Keyword(s):  
New Species ◽  
Western Mexico ◽  
A New Species
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