scholarly journals A new species of Odontozona Holthuis, 1946 (Crustacea: Decapoda: Stenopodidea: Stenopodidae) from the Caribbean Sea

Zootaxa ◽  
2017 ◽  
Vol 4276 (3) ◽  
pp. 405
Author(s):  
MARÍA M. CRIALES ◽  
RAFAEL LEMAITRE
Keyword(s):  
New Species ◽  
Morphological Characteristics ◽  
Caribbean Sea ◽  
Reef Environment ◽  
Western Atlantic ◽  
Male Specimen ◽  
Female Holotype ◽  
Coral Reef Environment ◽  
Morphological Differences ◽  
Shallow Water Species

A new shallow-water species of the stenopodid shrimp genus Odontozona is described based on a specimen collected on a coral reef environment in the San Bernardo Islands, Caribbean coast of Colombia. Odontozona edyli n. sp. can be separated from all other congenerics by a combination of morphological characteristics, most notably the ornate abdomen with a distinct and complex pattern of spines, carinae and grooves, spination of the carapace, length of rostrum, armature of third cheliped, third maxilliped and telson. This new species is more similar to O. arbur and O. sculpticaudata from the Indo-Pacific than to any other species of Odontozona from the western Atlantic. An unreported male specimen of O. striata from Jamaica, Caribbean Sea revealed morphological differences with the female holotype described by Goy (1981), suggesting a possible sexual dimorphism or a high intra-specific variability as reported for some Indo-Pacific Odontozona species. 

Eucheumatopsis sanibelensis sp. nov. from the Gulf coast of Florida, USA

Phytotaxa ◽  
2020 ◽  
Vol 440 (3) ◽  
pp. 215-224 ◽  
Author(s):  
ELIAS S. PETERSON ◽  
CRAIG W. SCHNEIDER ◽  
GARY W. SAUNDERS
Keyword(s):  
Gulf Coast ◽  
Sequence Data ◽  
Algal Species ◽  
Morphological Characteristics ◽  
Caribbean Sea ◽  
Lsu Rdna ◽  
Eastern Gulf Of Mexico ◽  
Single Location ◽  
Red Algal ◽  
Morphological Differences

Based upon COI-5P, LSU rDNA and rbcL sequence data, as well as its morphological characteristics, a new red algal species, Eucheumatopsis sanibelensis E.S.Peterson, C.W.Schneider et G.W.Saunders sp. nov., was discovered on the Gulf coast of Florida, USA and shown to be distinct from the generitype E. isiformis with a type locality in the eastern Caribbean Sea. The new more attenuate taxon from Sanibel Island represents only the second species in this newly described genus, a genus recently segregated from Eucheuma based upon significant molecular and morphological differences. The two species have overlapping geographic distributions in the eastern Gulf of Mexico, but thus far E. sanibelensis is only known from a single location.

Two new species in the genus Phoxokalliapseudes Drumm & Heard, 2011 (Crustacea: Tanaidacea: Kalliapseudidae) from the southwestern and southern coasts of Korea

Zootaxa ◽  
2017 ◽  
Vol 4231 (3) ◽  
pp. 341 ◽  
Author(s):  
JIN HEE WI ◽  
CHANG-KEUN KANG ◽  
HO YOUNG SOH
Keyword(s):  
New Species ◽  
Developmental Stages ◽  
Size Range ◽  
Morphological Characteristics ◽  
Width Ratio ◽  
Fixed Size ◽  
Type Specimens ◽  
Two New Species ◽  
Comprehensive Comparison ◽  
Morphological Differences

Two new species of Phoxokalliapseudes from the southwestern and southern coasts of Korea are described. Phoxokalliapseudes aculeatus n. sp. is distinguished by the two robust spiniform setae on the ventral margin of the cheliped basis, pereonites 2–6 each with a hyposphaenium and small spinules, and the setiferous lobe on the mandibles with different numbers of serrated spiniform setae in the female and male (five and six, respectively). Phoxokalliapseudes cinctus n. sp. can be distinguished by the propodus of the male cheliped with the largest length to width ratio (2.5: 1) of the genus, and the fixed finger with small denticles on the cutting edge and near the insertion of the dactylus. The female has the largest dactylus to propodus length ratio of pereopod 6 in the genus. Only four species of Phoxokalliapseudes have been described or redescribed previously, of which some exhibit morphological differences with the type specimens, possibly indicating additional new species. To minimize identification difficulties caused by morphometric variations in developmental stages, the morphological characteristics of the new species are described in detail for a fixed size range and compared to different-sized individuals. Additionally, a comprehensive comparison of the new Phoxokalliapseudes species with the other known species is provided and discussed. 

scholarly journals Maritime trap-jaw ants (Hymenoptera, Formicidae, Ponerinae) of the Indo-Australian region – redescription of Odontomachus malignus Smith and description of a related new species from Singapore, including first descriptions of males

ZooKeys ◽  
2020 ◽  
Vol 915 ◽  
pp. 137-174
Author(s):  
Wendy Y. Wang ◽  
Aiki Yamada ◽  
Seiki Yamane
Keyword(s):  
New Species ◽  
Morphological Characteristics ◽  
Species Group ◽  
The Philippines ◽  
Dna Evidence ◽  
Littoral Habitat ◽  
Morphological Differences ◽  
Worker Caste ◽  
First Time ◽  
Distinct Morphology

The maritime trap-jaw ant Odontomachus malignus Smith, 1859 is thought to be widespread throughout islands in the Indo-Pacific and parts of the Oriental realm. Because of its unique nesting preference for harsh littoral habitat and distinct morphology, O. malignus has usually been assumed to consist of only one species. We, however, describe a new species similar to O. malignus found in the mangroves of Singapore, Southeast Asia – Odontomachus litoralissp. nov. We find strong evidence of both species existing in (near) sympatry, and also distinct morphological differences between O. malignus and the new species. Additional complementary DNA evidence in the form of COI barcodes (313 bp) supporting putative species identification and delimitation is provided. Defining morphological characteristics for the O. malignus species group (nested within the larger O. infandus clade) are given in detail for the first time. The worker and queen castes of the new species are described; a redescription of the worker caste of O. malignus, based on specimens from Singapore and the Philippines in addition to the holotype, is also given. The males of both species are also described for the first time, including male genitalia. A preliminary key to most known species of the O. infandus group based on the worker caste is provided.

scholarly journals Evidence for hydrodynamic orientation by spiny lobsters in a patch reef environment

1995 ◽  
Vol 198 (10) ◽  
pp. 2049-2054 ◽  
Author(s):  
G Nevitt ◽  
N Pentcheff ◽  
K Lohmann ◽  
R Zimmer-Faust
Keyword(s):  
Visual Cues ◽  
Patch Reef ◽  
Local Environment ◽  
Reef Environment ◽  
Western Atlantic ◽  
Directional Information ◽  
Complex Orientation ◽  
Spiny Lobsters ◽  
Coral Reef Environment ◽  
Ultrasonic Tracking

Western Atlantic spiny lobsters (Panulirus argus) are superb underwater navigators. Spiny lobsters perform dramatic seasonal offshore migrations and have also been shown to locate and home to specific den sites within the elaborate coral reef environment in which they live. How these animals perform such complex orientation tasks is not known. The study reported here was designed to explore the sensory mechanisms that spiny lobsters use to orient in and around a familiar patch reef environment. Our results show that, in the absence of visual cues, lobsters displaced a short (50 m) distance off the reef do not initially (i.e. within 20 min) travel towards their dens or return to the patch reef where their dens are located. Instead, the headings lobsters follow are significantly correlated to the direction of local hydrodynamic cues and, specifically, to the direction of approaching wave surge. Results from ultrasonic tracking experiments over longer periods (24 h) suggest that displaced lobsters are able to relocate the reef where they were captured, even without visual cues. These results suggest that hydrodynamic cues may provide useful and immediate directional information to lobsters within the local environment of the home reef.

Description of a second deep-water species in the alpheid shrimp genus Bannereus Bruce, 1988 (Malacostraca: Caridea)

Zootaxa ◽  
2020 ◽  
Vol 4894 (1) ◽  
pp. 133-142
Author(s):  
ARTHUR ANKER ◽  
PAULO P.G. PACHELLE
Keyword(s):  
New Species ◽  
Distinct Species ◽  
Morphological Characters ◽  
Male Specimen ◽  
Coral Sea ◽  
Female Holotype ◽  
Deep Water Species ◽  
Major Cheliped ◽  
Water Species ◽  
Alpheid Shrimp

Bannereus chani sp. nov. (Caridea: Alpheidae) is described based on a single female specimen collected off south-eastern Taiwan, at a depth of 301–356 m, being the second only species in the genus Bannereus Bruce, 1988. The ovigerous female holotype of the new species differs from the female holotype of B. anomalus Bruce 1988, the type species of the genus, by a series of important morphological characters, for instance, on the major cheliped and third pereiopod, strongly indicating that they represent two distinct species. The non-type male specimen tentatively identified as B. anomalus by Bruce (1988) may well belong to the new species, since it differs from the holotype of B. anomalus essentially by the same criteria as the female holotype of B. chani sp. nov. In addition, B. anomalus is newly recorded from the New Caledonian side of the Coral Sea. 

A new species of Hemus (Majoidea: Majidae: Mithracinae) from the Pacific coast of Panamá, with a key to the genus

Zootaxa ◽  
2011 ◽  
Vol 2799 (1) ◽  
pp. 63 ◽  
Author(s):  
AMANDA M. WINDSOR ◽  
DARRYL L. FELDER
Keyword(s):  
New Species ◽  
Pacific Ocean ◽  
Pacific Coast ◽  
Shallow Waters ◽  
Spider Crab ◽  
Single Male ◽  
Western Atlantic ◽  
Male Specimen ◽  
The Pacific ◽  
A New Species

A new species of spider crab, Hemus magalae n. sp. (Majidae), is described from a single male specimen from Islas de las Perlas, Pacific Ocean coast of Panamá. This species differs from its congeners with respect to many features of the carapace including mid-line elevation and lateral dentition. Hemus A. Milne-Edwards, 1875, now includes four species, three from coastal waters of the eastern Pacific Ocean and one from shallow waters in the tropical western Atlantic Ocean. A key to the Pacific and Atlantic species of Hemus is provided.

A new species of the hairy crab genus Pilumnus (Decapoda: Brachyura: Pilumnidae) from Belize

Zootaxa ◽  
2019 ◽  
Vol 4711 (1) ◽  
pp. 175-184
Author(s):  
TATIANA MAGALHÃES ◽  
DARRYL L. FELDER
Keyword(s):  
Molecular Markers ◽  
New Species ◽  
Water Column ◽  
Ovigerous Female ◽  
Caribbean Sea ◽  
Female Specimen ◽  
Western Atlantic ◽  
Red Mangrove ◽  
Mangrove Roots ◽  
A New Species

A new species of the pilumnid crab genus Pilumnus Leach, 1815, P. mantelattoi n. sp., is described and illustrated on the basis of a single ovigerous female specimen from Belize, bordering the northwestern Caribbean Sea. The holotype, an ovigerous female, was taken from an epifaunal accumulation of sponges, ascidians, and hydroids on red mangrove roots suspended in the water column. Superficially resembling Pilumnus floridanus Stimpson, 1871, with which it occurs sympatrically, it is distinguished from this and all other known western Atlantic species on the basis of both morphology and molecular markers. 

scholarly journals Terrestrial Isopoda (Crustacea, Oniscidea) from the coasts of Costa Rica, with descriptions of three new species

2018 ◽  
Vol 66 (1-1) ◽  
pp. 187 ◽  
Author(s):  
Stefano Taiti ◽  
Giuseppe Montesanto ◽  
José A. Vargas
Keyword(s):  
New Species ◽  
Costa Rica ◽  
Pacific Coast ◽  
Caribbean Sea ◽  
The Pacific ◽  
The Caribbean ◽  
Morphological Differences ◽  
Three New Species ◽  
Halophilic Species ◽  
Caribbean Populations

Abstract: Seven species of terrestrial isopods are recorded from the coasts of the Pacific and Caribbean sides of Costa Rica. Three species (Buchnerillo neotropicalis, Hawaiioscia nicoyaensis and Trichorhina biocellata) are described as new and two species (Tylos niveus and Armadilloniscus cf. caraibicus) are newly recorded from the country. The poorly known species T. niveus is also illustrated. At present the total number of terrestrial isopod species recorded from Costa Rica is 30. Interestingly four typical littoral halophilic species (Ligia baudiniana, Tylos wegeneri, T. niveus and A. cf. caraibicus) are present on both the Pacific coast of Costa Rica and on the coasts of the lands encompassed by the Caribbean Sea. With the sole exception of A. cf. caraibicus, no morphological differences could be detected from the Pacific and Caribbean populations of those species. Rev. Biol. Trop. 66(Suppl. 1): S187-S210. Epub 2018 April 01. 

scholarly journals A new species of shrimp of the genus Periclimenaeus Borradaile, 1915 (Decapoda: Caridea: Palaemonidae) from the southeastern Gulf of Mexico, including a key to the western Atlantic species of the genus

Zootaxa ◽  
2017 ◽  
Vol 4303 (4) ◽  
pp. 491 ◽  
Author(s):  
GABRIEL E. RAMOS-TAFUR ◽  
RAFAEL LEMAITRE
Keyword(s):  
New Species ◽  
Gulf Of Mexico ◽  
Cutting Edge ◽  
Ventral Margin ◽  
Single Male ◽  
Western Atlantic ◽  
Male Specimen ◽  
Dry Tortugas ◽  
The Third ◽  
A New Species

A new species of symbiotic palaemonid shrimp, Periclimenaeus mcmichaeli sp. nov., is described based on a single male specimen collected near Dry Tortugas, Florida, in the southeastern Gulf of Mexico. This new species, the 14th now known for the genus Periclimenaeus Borradaile 1915 from the western Atlantic, is morphologically most similar to P. wilsoni (Hay, 1917), from which it can be separated by the presence in the new species of two small subdistal teeth on the ventral margin of the rostrum, absence of small spinules or tubercles on ventral margin of the meri of the major and minor chelipeds, presence of three teeth on the cutting edge of the dactylus of the minor chela, and position of dorsal spines on the telson. The presence in this new species of a prominent acute projection on each pleurae of the third and fourth somite is documented, and appears to be a character previously overlooked in the taxonomic literature of species of the genus. This new species is compared with other similar congeners from the western Atlantic as well as other oceanic regions. An updated diagnosis for P. wilsoni, and a key to identify the western Atlantic species of the genus, are also presented. 

Five new species of Homoscleromorpha (Porifera) from the Caribbean Sea and re-description ofPlakina jamaicensis

2013 ◽  
Vol 94 (2) ◽  
pp. 285-307 ◽  
Author(s):  
Alexander V. Ereskovsky ◽  
Dennis V. Lavrov ◽  
Philippe Willenz
Keyword(s):  
New Species ◽  
Caribbean Sea ◽  
Cell Types ◽  
Type Specimen ◽  
Size Class ◽  
Western Atlantic ◽  
Molecular Barcoding ◽  
Vertical Walls ◽  
The Caribbean ◽  
Bacterial Morphotypes

Five new species of Homoscleromorpha (Porifera) of four genera,Oscarella,Plakortis,PlakinaandCorticium, are described from vertical walls of reef caves at depths ranging from 23 to 28 m in the Caribbean Sea.Oscarella nathaliaesp. nov. has a leaf-like thinly encrusting, flat body, loosely attached to the substrate and a perforated, not lobate surface.Oscarella nathaliaesp. nov. contains two bacterial morphotypes and is characterized by two mesohylar cell types with inclusions.Plakortis myraesp. nov. has diods of two categories: abundant large ones (83–119 μm long) and rare small ones (67–71 μm long) with sinuous, S-bent centres; triods Y- or T-shaped (18–5  μm long), and abundant microrhabds (5–12 μm long).Plakortis edwardsisp. nov. has diods of one category with thick, sinuous, S-bent centres (110 to 128 μm long); triods T-shaped (actines 28–59 μm long). It is the only species of this genus showing small diods (22–31 μm long).Plakortis dariaesp. nov. has diods of two categories: large ones (67–112 μm long) and small, rare, irregular ones, slightly curved, often deformed with one end blunt (30–59 μm long); triods rare and regular (actines 20–44 μm long).Corticium diamantensesp. nov. has oscula situated near its border, regular non-lophose calthrops of one size-class, very rare tetralophose calthrops and candelabra with the fourth actine ramified basally in 4–5 microspined rays. In addition, a re-description ofPlakina jamaicensisis based on newly collected material and the type specimen.Plakortis jamaicensishas a convoluted brain-like surface; well developed sub-ectosomal cavities; irregular sinuous diods, triods, calthrops, rare monolophose calthrops, rare dilophose calthrops, rare trilophose calthrops and common tetralophose calthrops. Molecular ‘barcoding’ sequences for mitochondrial cob are given forPlakortis edwardsisp. nov.,P. dariaesp. nov.,Plakina jamaicensisandCorticium diamantensesp. nov. An identification key for all western Atlantic Homoscleromorpha is provided.

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