scholarly journals A new species of Peniculus (Copepoda: Siphonostomatoida) parasitizing mesopelagic myctophid fish: first discovery of colonization of the genus in deep water

Parasite ◽  
2018 ◽  
Vol 25 ◽  
pp. 58
Author(s):  
Susumu Ohtsuka ◽  
Jun Nishikawa ◽  
Geoffrey A. Boxshall

Peniculus hokutoae n. sp. is described on the basis of an ovigerous adult female parasitizing the caudal fin of the myctophid fish Symbolophorus evermanni (Gilbert, 1905), collected from Suruga Bay, Japan. This is the first record of parasitism by this genus on mesopelagic myctophid fish. The new species is easily distinguished from other congeners in: (1) the presence of a conical process anterior to the rostrum; (2) the secondary elongation of the first pedigerous somite; (3) the incorporation of the third and fourth pedigerous somites into the trunk; (4) the unilobate maxillule bearing two unequal apical setae; (5) the lack of any processes on the first segment of the maxilla. Four morphological patterns of the cephalothorax, neck and anterior parts of the trunk can be found in the genus. We infer that initial colonization of a mesopelagic myctophid fish as host is likely to have occurred when the diurnally-migrating myctophid host was feeding in near-surface waters at night and was exposed to infective stages of Peniculus.

2019 ◽  
Vol 59 (2) ◽  
pp. 549-554 ◽  
Author(s):  
Vladimir M. Gnezdilov

Stenogiffardia bifurca sp. nov. is described from a series of specimens collected in the former Antananarivo, Fianarantsoa, and Toliara Provinces of Madagascar. This is the first record of the genus,Evans, 1977 (Hemiptera: Cicadellidae: Deltocephalinae) from Madagascar, which is now the third genus of the tribe Chiasmini known from the island. The distribution of,is analyzed and an identification key to species is given.,Evans, 1977 is removed from synonymy with,(Kirkaldy, 1906).


Zootaxa ◽  
2017 ◽  
Vol 4238 (4) ◽  
pp. 499 ◽  
Author(s):  
PAULO HENRIQUE C. CORGOSINHO ◽  
NANCY F. MERCADO-SALAS ◽  
PEDRO MARTÍNEZ ARBIZU ◽  
EDINALDO NELSON DOS SANTOS SILVA ◽  
TERUE C. KIHARA

Remaneicaris is a species-rich Neotropical monophyletic group, easily recognized by the synapomorphic position of the outer seta of the third exopodite of leg 4, localized at 2/3 of the outer margin. The genus, comprising 35 species in five monophyletic groups, plus R. ignotus and R. meyerabichi, retains an unusual set of plesiomorphic characters. Herein we supplement the descriptions of the species belonging to the Remaneicaris argentina-group, and describe a new species from the tropical forest of Southeast Mexico. The present study extends the geographic distribution of the genus, with the northernmost record until now being from El Salvador. The genus having hitherto been known from interstitial groundwater habitats, this is its first record in epigean semi-terrestrial habitats. Remaneicaris siankaan sp. nov. was found in phytotelmata (bromeliads), leaf litter, moist soil, permanent ponds (known locally as “aguadas”), and temporal and permanent wetlands (savannahs). The new species can be easily characterized by its finely pitted cuticle, the ε (epsilon)-shaped thumb of the male P3 and the bifid accessory spine with distal hyaline inner tip, which precedes the thumb. A new method for the 3D reconstruction of microcrustaceans is described. 


Phytotaxa ◽  
2014 ◽  
Vol 156 (1) ◽  
pp. 41 ◽  
Author(s):  
Patricio Saldivia ◽  
LUIS FAÚNDEZ

A new legume species, Weberbauerella chilensis, from the Andean foothills in the Tarapacá region in Chile, is described and illustrated. This species represents the first record of the genus in Chile and the Southern Cone of South America and is the third species described for the genus. Weberbauerella chilensis resembles  W. brongnartioides from Peru, but differs primarily in its smaller size, fewer leaflets and habitat conditions.


ZooKeys ◽  
2019 ◽  
Vol 865 ◽  
pp. 87-102
Author(s):  
Marcela Alejandra Peralta ◽  
Águeda Verónica Isa Miranda

A new species of freshwater amphipod belonging to genus Hyalella is described from a peatbog at high altitudes (3,650 to 4,400 m above sea level) in the Puna region (Salta province, northwestern Argentina). The new species can be distinguished from other hyalellid species by the following combination of characters: dorso-posterior flanges on pleonites I–III; palp on maxilla 1 reaching almost half of distance between base of palp and base of setae on outer plate, and two papposerrate setae on the inner margin of inner plate of maxilla 2; propodus of gnathopod 1 hammer-shaped, inner face with seven serrate setae; propodus of gnathopod 2 ovate; male uropod 1 without curved seta on inner side of inner ramus; ramus of uropod 3 shorter than peduncle; six pair of sternal gills on pereionites II–VII. A detailed morphological description and illustrations of the new species are provided. In Argentina, the new species represents the third record for the genus at altitudes greater than 2,000 m a.s.l., after H.kochi and H.fossamancinii (Dos Santos et al. 2008, González 2003), and the first record above 4,000 m a.s.l. Some comments about distributional and ecological aspects of the new species are included. With this new species, the number of Hyalella species known from Argentina and Falkland Islands (Islas Malvinas) rises to 12.


2020 ◽  
Vol 60 ◽  
pp. e20206066
Author(s):  
Esau Adenawer Ospina-Peñuela ◽  
Carlos José Einicker Lamas ◽  
Francisco Serna ◽  
Maria Virginia Urso-Guimarães

A new species of Brethesiamyia (Diptera: Cecidomyiidae) is described from Colombia, which represents the first record of the genus for the country. We described the species based on male, female, pupa, larva of third instar and gall morphology, which the larva induces on leaves of Myrcia sp. (Myrtaceae) from the foothills situated at the connection of the Andes and the Amazon basin from Colombia. The first description of the third larval instar is provided for the genus.


2017 ◽  
Vol 18 (2) ◽  
pp. 332
Author(s):  
J. MOREIRA ◽  
J. JUNOY

Benthic monitoring of the marine shallow bottoms off Menorca (Balearic Islands, western Mediterranean) has yielded several specimens of the leptostracan genus Paranebalia Claus, 1880. This finding constitutes the first report of the genus from European latitudes and the Mediterranean Sea and therefore the third leptostracan genus known from the Mediterranean. Specimens are described, illustrated and compared to other known species; they might represent a new species but their state of maturity and the lack of an appropriate diagnosis for the type species of the genus, Paranebalia longipes (Willemöes-Suhm, 1875), did not allow to confirm its taxonomic status.


Author(s):  
Juan Camilo Zárate Arévalo ◽  
Shanly Carolina Coneo Gómez ◽  
Mónica Puyana Hegedus

In the Atlantic Ocean, there are only two records of nudibranchs belonging to the genus Carminodoris Bergh, 1889 (Discodorididae). This work describes and illustrates the first record of a nudibranch belonging to this genus in the Colombian Caribbean, upon a sample collected in San Martin de Pajarales Island, Rosario Islands, Cartagena, Colombia. Morphological and anatomical attributes of the studied specimen were compared with those of Atlantic (Carminodoris hansrosaorum and C. madibenthos), also with those reported for the Pacific (C. nodulosa, C. grandiflora, C. bramale, C. flammea, C. bifurcata, C. armata and C. estrelyado). The studied sample differs from the other species by its size (74 mm), distinctive morphological patterns (foot, tubercles, branchial plume, mantle, jaw and radular formula). This is the first report of this genus in the Western Caribbean and it might be a new species, yet to be confirmed, with additional anatomical and molecular studies.


2007 ◽  
Vol 24 (3) ◽  
pp. 591-600
Author(s):  
Terue C. Kihara ◽  
Tagea K. S. Björnberg ◽  
Gisele Y. Kawauchi

Catiniid copepods are characterized by the presence of a pedunculate sucker on the antenna. Four genera are currently included in the family Catiniidae: Catinia, Cotylemyzon, Cotylomolgus and Myzomolgus, the most speciose. Within the framework of the Special Research Program "Conservation and Sustainable Use of the Biodiversity of the State of São Paulo - Biota/FAPESP", a new species of Myzomolgus was found as an external associate of Sipunculus nudus and S. phalloides phalloides. The sipunculan worms were collected during the low tide in Araçá Beach, State of São Paulo, Brazil (23º49’02"S, 45º24’19"W). The new species differs from its three congeners, namely M. stupendus from France and M. tenuis and M. orientalis from Korea, by the peculiar ornamentation of the third antennal segment, morphology of mandible and leg 6 and presence of denticulate area between maxillipeds. The description of this new species raises to four the number of catiniid species (one of Catinia and two of Myzomolgus) associated with the widely distributed S. nudus. In Brazil, this is the first record of Myzomolgus and the second species associated with sipunculan worms (a new species of Catinia found on S. phalloides phalloides is under description).


2020 ◽  
Vol 724 ◽  
Author(s):  
Jorge Mederos ◽  
Sergi Gago ◽  
Neus Brañas ◽  
Floren Fadrique ◽  
Berta Caballero-López ◽  
...  

A new species of Limnophilinae (Diptera: Limoniidae), Dicranophragma (Brachylimnophila) relictum Mederos sp. nov., is described. This is the third species of this genus recorded from the Iberian Peninsula. This new species was discovered in a cave in the Sant Llorenç del Munt i Serra de l’Obac Natural Park, Barcelona Province (Catalonia) and it is the first record of a species of this genus from a hypogeous environment. The absence of suitable ecological conditions for the survival of this new species, particularly in the vicinity of the cave, suggests that this population of D. relictum Mederos sp. nov. is isolated. Dicranophragma relictum Mederos sp. nov. is characterized by the following features: a general grey-to-greenish-grey coloration on its thorax and a dark-grey abdomen; wings more than four times longer than wide; pale-brown-to-yellowish tinted wings, with brown veins and a well-marked stigma; in the male genitalia the upper part of the aedeagus is acute when viewed laterally and is longer than the lower part. A key is provided for separating the three species of Dicranophragma known to be present in the Iberian Peninsula.


Zootaxa ◽  
2012 ◽  
Vol 3193 (1) ◽  
pp. 53
Author(s):  
AMOL PATWARDHAN ◽  
R. P. ATHALYE

A new species Plectrosternus foveatus sp.nov. is described and illustrated. This is the first record of the genus from northern Western Ghats (Type locality: Yeoor, Thane, Maharashtra, India) and the third species from India.


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