New species of Duplominona Karling, 1966 (Platyhelminthes, Proseriata) from the Pacific coast of Panama

Zootaxa ◽  
2020 ◽  
Vol 4881 (3) ◽  
pp. 482-498
Author(s):  
MARCO CURINI-GALLETTI ◽  
MARCELLA CARCUPINO ◽  
GIACINTA A. STOCCHINO ◽  
FRANCESCA LEASI ◽  
JON L. NORENBURG
Keyword(s):  
New Species ◽  
Pacific Coast ◽  
Copulatory Organ ◽  
Present Contribution ◽  
Isthmus Of Panama ◽  
The Pacific ◽  
Species Pairs ◽  
The Caribbean ◽  
Hard Structures ◽  
Single Locality

Eight new species of Duplominona (Platyhelminthes, Proseriata, Monocelididae) are described from the Pacific coast of Panama. They differ from their congeners in the detailed morphology of hard structures associated with the copulatory organ. Duplominona basidilatata n. sp. has a cirrus provided with 5–6 rows of triangular spines, 3–8 μm long, with a large, flat, poorly sclerotized basis. D. hystricina n. sp. has 10–12 rows of needle-shaped spines, 3.5–15 μm long, with a swollen basis. The cirrus of D. hyperhystricina n. sp. is provided with 20–25 rows of slender spines 1.5–9 μm long, with a recurved distal tip. In D. veracruzensis n. sp., cirrus spines increase abruptly in size, from 1.5–2 μm to 6–7 μm. D. uniserta n. sp. has a very long seminal vesicle and a small cirrus, provided with one girdle of hook-shaped spines, 3–5 μm long. D. macrodon n. sp. has one girdle of large, triangular spines, 8–18 μm long. Both D. trimera n. sp. and D. pseudotrimera n. sp. have a tripartite tail, and their cirrus is provided with a stylet. In D. trimera n. sp., the stylet is surrounded by 15–20 rows of spines, 6.5–10 μm long, while D. pseudotrimera n. sp. has 6–8 rows of large spines, 7–22 μm long. D. uniserta n. sp. and D. aduncospina Curini-Galletti, 2019 from the Caribbean coast of Panama have few rows of morphologically nearly identical spines, and are possible candidates as trans-isthmian geminate species. The presence of species with a tripartite tail on both sides of the Isthmus of Panama suggests the possibility of further geminate species pairs; however, no support could be obtained on the basis of the morphology of their hard structures. Five of the eight new species of Duplominona have been found in a single locality, and the diversity of genus along the Pacific coast of Panama may be far higher than present contribution suggests.

Six new species of Archimonocelididae Meixner, 1938 (Platyhelminthes, Proseriata) from the Pacific, with proposal of a new genus

Zootaxa ◽  
2021 ◽  
Vol 4965 (3) ◽  
pp. 515-528
Author(s):  
MARCO CURINI-GALLETTI ◽  
ERNEST R. SCHOCKAERT
Keyword(s):  
New Species ◽  
New Genus ◽  
South Australia ◽  
Ventral Side ◽  
Copulatory Organ ◽  
Dorsal Side ◽  
The Pacific ◽  
Eastern Australia ◽  
The Pacific Ocean ◽  
The Caribbean

The genus Tajikacelis n. gen. is introduced for species of Archimonocelididae (Proseriata) characterized by the lack of atrial spines in the copulatory organ and by the opening of the seminal vesicles into the prostate vesicle at its ventral side. Six new species from the Pacific Ocean are ascribed to the new genus; they may be distinguished by features of the genital systems and the morphology of their copulatory stylets. T. tajikai n. sp. (type species of the new genus) and T. macrostomoides n. sp., both from eastern Australia, have a long tubular stylet. In T. macrostomoides n. sp., the stylet is more curved, bending to 180°, and has a narrower basis compared to that of T. tajikai n. sp. In T. artoisi n. sp., from Hawai’i, and T. nematoplanoides n. sp., from South Australia, the stylet is shaped as a truncated cone, with a broad, oblique proximal opening and a very short tubular part. T. artoisi n. sp. is distinct for the much stronger thickening of the dorsal side of the stylet, and for the different shape of the proximal opening. In T. acuta n. sp. and T. truncata n. sp., from West Panama, the tubular stylet is comparatively short; the two species differ for the shape of the distal opening, produced into a sharp spike in T. acuta n. sp., and square-ended in T. truncata n. sp.. Two species previously described in the genus Archimonocelis are transferred to Tajikacelis n. gen.: T. itoi Tajika, 1981 from Japan and T. keke Martens and Curini-Galletti, 1989 from Sulawesi (Indonesia). The taxonomic position of the problematic Archimonocelis glabrodorsata Martens and Curini-Galletti, 1989 from the Caribbean is discussed. The relationships of and within the genus Tajikacelis n. gen. are discussed and compared with recent results based on DNA studies. 

Speocarcinus berglundi n. sp. (Decapoda: Brachyura), a new crab from the Imperial Formation (late Miocene-late Pliocene) of southern California

1994 ◽  
Vol 68 (4) ◽  
pp. 800-807 ◽  
Author(s):  
Annette B. Tucker ◽  
Rodney M. Feldmann ◽  
Charles L. Powell
Keyword(s):  
New Species ◽  
Late Miocene ◽  
Southern California ◽  
Late Pliocene ◽  
Riverside County ◽  
Isthmus Of Panama ◽  
The Pacific ◽  
Extant Species ◽  
The Caribbean ◽  
A New Species

Speocarcinus berglundi n. sp. is described from the Imperial Formation in Riverside County, California. Although the Imperial Formation spans late Miocene through late Pliocene time, the part of the unit that bears crabs has been radiometrically dated as late Miocene. The identification of a new species was based upon comparison with four extant species and represents the first documented fossil occurrence for the genus. The occurrence of this new species suggests that the genus may have originated in the Pacific and, during the Miocene, dispersed through the Isthmus of Panama to the Caribbean. Two of the specimens exhibit parasitism by Bopyridae (Isopoda).

Review of the bryozoan genus Bryopesanser Tilbrook, 2006 (Escharinidae: Cheilostomata) with the description of 11 new species

Zootaxa ◽  
2012 ◽  
Vol 3165 (1) ◽  
pp. 39 ◽  
Author(s):  
KEVIN J. TILBROOK
Keyword(s):  
New Species ◽  
Sri Lanka ◽  
West Africa ◽  
Red Sea ◽  
Pacific Coast ◽  
Caribbean Coast ◽  
The Pacific ◽  
The Caribbean

Geographically widespread material originally assigned to the Floridan species Bryopesanser pesanseris (Smitt, 1873)was thoroughly examined and found to mask a hitherto unknown diversity. Smitt’s (1873) species has previously beennoted as “well-known and widely distributed” but this is not the case. This paper reviews the species previously assignedto Bryopesanser Tilbrook, 2006 (B. pesanseris, B. capitaneus, B. grandicella, and B. latesco) and describes 11 new species(B. tonsillorum n. sp., B. gardineri n. sp., B. puncturella n. sp., B. thricyng n. sp., B. ascendosolaris n. sp., B. ecphyma-totes n. sp., B. hebelomaia n. sp., B. lobiones n. sp., B. crebricollis n. sp., B. baderae n. sp., B. tiara n. sp.). All the Bry-opesanser species are, to a greater or lesser extent, geographically limited in their distribution. However, two species aremore widespread than the rest and truly Indo-Pacific in their distribution: B. latesco is recorded from the Red Sea, acrossthe Indo-Pacific to the Caribbean coast of Panama; B. tonsillorum n.sp. is even more broadly distributed, from Sri Lanka and Indonesia to the Pacific coast of Colombia and also West Africa.

A new species of Loimopapillosum Hargis, 1955 (Monogenea: Monocotylidae) parasitizing Hypanus dipterurus (Myliobatiformes: Dasyatidae) off the Pacific coast of South America, and its phylogenetic relationships

2021 ◽  
Vol 95 ◽  
Author(s):  
J.D. Chero ◽  
C.L. Cruces ◽  
G. Sáez ◽  
A.G.L. Oliveira ◽  
C.P. Santos ◽  
...  
Keyword(s):  
New Species ◽  
South America ◽  
Pacific Coast ◽  
Male Copulatory Organ ◽  
Phylogenetic Analyses ◽  
Copulatory Organ ◽  
The Pacific ◽  
Northern Peru ◽  
A New Species ◽  
Single Testis

Abstract A new species of Loimopapillosum Hargis, 1955 is described based on specimens collected from the gills of the diamond stingray, Hypanus dipterurus (Jordan & Gilbert, 1880) (Myliobatiformes: Dasyatidae) captured off Puerto Pizarro, Tumbes Region, northern Peru. Loimopapillosum pascuali n. sp. is distinguished mainly from the type and only species, Loimopapillosum dasyatis Hargis, 1955, by its funnel-shaped male copulatory organ, with an asymmetrical base; the superficial root of the anchor with distal knobs; the deep root of the anchor with a constriction at its base; a single testis; and the number of head organs. Available sequences for members of Monocotylidae in the GenBank as well as partial sequences for the gene 28S and 18S ribosomal DNA from L. pascuali n. sp. were included in phylogenetic analyses, suggesting that Loimoinae (represented in this study by L. pascuali n. sp. and Loimosina sp.) is nested within the Monocotylidae Taschenberg, 1879. Therefore, we confirm the rejection of Loimoidae Price, 1936 and its reincorporation as a subfamily of Monocotylidae, as previously suggested. Loimopapillosum pascuali n. sp. represents the first species of this genus in South America.

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 Eggs of echinoids separated by the Isthmus of Panama harbor divergent microbiota

2020 ◽  
Vol 648 ◽  
pp. 169-177
Author(s):  
TJ Carrier ◽  
HA Lessios ◽  
AM Reitzel
Keyword(s):  
Community Composition ◽  
Bacterial Communities ◽  
Evolutionary History ◽  
Isthmus Of Panama ◽  
The Pacific ◽  
Species Pairs ◽  
History Of ◽  
The Pacific Ocean ◽  
The Caribbean ◽  
Bodies Of Water

Relationships between animals and their associated microbiota are dependent on both the evolutionary history of the host and on the environment. The majority of studies tend to focus on either one of these factors but rarely consider how both determine the community composition of the associated microbiota. One ‘natural experiment’ to test how evolutionary history, shared environments, and the interaction between these factors drive community composition is to compare geminate species pairs. Echinoids separated by the Isthmus of Panama are suitable for this comparison due to their known evolutionary history and differences in the oceanographic characteristics of the Caribbean Sea and the Pacific Ocean. By comparing the bacterial communities of the eggs of Echinometra and Diadema geminate species pairs, we show that each pair of geminate species associates with a distinct bacterial community in a pattern consistent with phylosymbiosis, and that the interaction between the evolutionary history of the host and the environment best explains differences in these communities. Moreover, we found that the relative abundance of particular bacterial taxa differed considerably between the 2 bodies of water and that the 2 Caribbean Echinometra species were dominated by unclassified bacterial taxa within the phototrophic Oxyphotobacteria. Taken together, data presented here support the hypothesis that the bacterial communities associated with geminate species are another characteristic of these species that have diverged in ~2.8 million years of isolation.

Six new species and three new records of infaunal alpheid shrimps from the genera Leptalpheus Williams, 1965 and Fenneralpheus Felder & Manning, 1986 (Crustacea, Decapoda)

Zootaxa ◽  
2011 ◽  
Vol 3041 (1) ◽  
pp. 1 ◽  
Author(s):  
ARTHUR ANKER
Keyword(s):  
New Species ◽  
Pacific Coast ◽  
New Records ◽  
Caribbean Coast ◽  
Western Atlantic ◽  
The Pacific ◽  
New Localities ◽  
Unidentified Species ◽  
The Caribbean ◽  
First Time

Several species of the infaunal alpheid genera Leptalpheus Williams, 1965 and Fenneralpheus Felder & Manning, 1986 are described as new or reported from new localities in the tropical western Atlantic and eastern Pacific. In the genus Leptalpheus, five species are described as new: L. marginalis sp. nov. from the Caribbean coast of Colombia; L. penicillatus sp. nov. from the Pacific coast of Panama and Costa Rica; L. azuero sp. nov., L. hendrickxi sp. nov., and L. bicristatus sp. nov., all three from the Pacific coast of Panama. In addition, L. cf. forceps Williams, 1965 and L. felderi Anker, Vera Caripe & Lira, 2006 are reported for the first time from the Caribbean coast of Panama. Several unidentified species of Leptalpheus presently known from incomplete or immature specimens are also reported. In the genus Fenneralpheus, F. orabovis sp. nov. is described as new, whereas F. chacei Felder & Manning, 1986 is reported from the Caribbean coast of Panama, representing the first finding of this species outside its type locality in Florida. The generic diagnoses of both Leptalpheus and Fenneralpheus are emended to accommodate the new species.

scholarly journals Three new species of Cumacea (Crustacea: Peracarida) from Costa Rica

Zootaxa ◽  
2004 ◽  
Vol 721 (1) ◽  
pp. 1 ◽  
Author(s):  
IORGU PETRESCU ◽  
RICHARD W. HEARD
Keyword(s):  
New Species ◽  
Pacific Coast ◽  
Costa Rican ◽  
Reef Habitat ◽  
Caribbean Coast ◽  
Western Atlantic ◽  
The Pacific ◽  
Lateral Ridge ◽  
The Caribbean ◽  
Three New Species

Three new species of Cumacea are described from Costa Rican coastal waters. The bodotriids, Cyclaspys breedyae n. sp. and Cyclaspis vargasae n. sp., occurred on the Pacific coast, and the nannastacid, Cumella spinifera n. sp., came from a shallow back reef habitat of the Caribbean coast. Cyclaspis breedyae n. sp., which was collected from shallow water (1 1.5 m) at a beach just north of Puerto Caldera, has affinities with Cyclaspis varians Calman, 1912 from the northwestern Atlantic; it differs by having a carapace with fewer (usually 4), but larger, dorsal spines behind the ocular lobe and by having the pseudorostrum not extending beyond the ocular lobe. Cyclaspis vargasae n. sp., which was collected at a depth of 35 m off San Jos Island on the northwest coast, has some similarities with western Atlantic species, Cyclaspis alba Roccatagliata & Moreira 1986 and C. variabilis Roccatagliata & Moreira, 1986, but it differs from these species by having a carapace with oblique dorsal crests and a lateral ridge running anteriorly from the posteroventral margin of the carapace to just above the antennal notch. Cumella spinifera n. sp. was collected on the Caribbean coast at Puerto Vargas and has its closest affinities with C. zimmeri Petrescu, Iliffe, & Sarbu, 1994, known from shallow Caribbean waters off Jamaica. It is distinguished from the Jamaican species by several characters, including having the female carapace with more dorsal spines (10 verses 3 on the carapace of C. zimmeri) and being more dorsally pronounced with a papulate integument.

scholarly journals New species of the gorgoniian genus Pacifigorgia (Coelenterata: Octocorallia: Gorgoniidae) from Pacific Panama

Zootaxa ◽  
2004 ◽  
Vol 541 (1) ◽  
pp. 1 ◽  
Author(s):  
ODALISCA BREEDY ◽  
HECTOR M. GUZMAN
Keyword(s):  
New Species ◽  
National Park ◽  
Pacific Coast ◽  
New Records ◽  
Scanning Electron Micrographs ◽  
Species List ◽  
The Pacific ◽  
Fourth Species ◽  
Shallow Water Species ◽  
Water Species

Four new shallow water species of the genus Pacifigorgia were found in recent surveys along the Pacific coast of Panama. One of the species was only found in dense patches at two shallow seamount-like localities inside the Coiba National Park, Gulf of Chiriqu . Two other species were patchily distributed at several localities in the Gulf of Chiriqu . A fourth species was widely distributed around the gulfs of Chiriqu and Panama encompassing a broad range of habitats and depths. The new species are described and illustrated in detail with scanning electron micrographs (SEM) of the sclerites, and colour photographs of the colony forms. The suspected occurrence of a particular Pacifigorgia species for this region is confirmed and two other new records are added to the species list. With the new four species, a total of 15 are established for Panama, making 31 species for the eastern Pacific to date.

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