A new species of Rhinonastes (Monogenoidea, Dactylogyridae), nasal parasite of Prochilodus argenteus (Actinopterygii, Characiformes) from Brazil

2014 ◽  
Vol 59 (3) ◽  
Author(s):  
Cassandra Monteiro ◽  
Marilia Brasil-Sato

AbstractA new species of Rhinonastes, hitherto monotypic, is described and illustrated from the nasal cavity of ‘curimat’, Prochilodus argenteus from São Francisco River, Brazil. Rhinonastes curimatae n. sp. presents a male copulatory organ with more than five rings while the type species of the genus is characterized by male copulatory organ with less than two rings. This is the first record of a nasal parasite in P. argenteus.

2021 ◽  
pp. SP521-2021-127
Author(s):  
Tingting Yu

AbstractThe genus Hirsuticyclus Neubauer, Xing & Jochum, 2019 was the first record of an exceptionally preserved land snail with dense periostracal hairs from mid-Cretaceous Kachin (Burmese) amber. Here we document four newly-discovered shells from Kachin amber, one belonging to the type species Hirsuticyclus electrum Neubauer, Xing & Jochum, 2019 and the remaining three shells belonging to a new species, Hirsuticyclus canaliculatus sp. nov. Well-preserved morphological characteristics of these two species could be clearly demonstrated under light microscopy combined with modern micro-CT scans with computer 3D reconstructions. Our new material of the type species amends the generic diagnosis based on a better-preserved shell including the peristome and operculum. The new species shows distinctive shell characteristics such as numerous spiral keels and a flaring, folded peristome interrupted by two canals. These excellently preserved fossils contribute to our understanding of the morphological diversity and evolution of these ancient members of cyclophoroids.


Zootaxa ◽  
2012 ◽  
Vol 3192 (1) ◽  
pp. 49
Author(s):  
JULIE H. BAILEY-BROCK ◽  
WAGNER F. MAGALHÃES

A new species of the serpulid genus Metavermilia Bush, 1905 and a new record of the genus Omphalopomopsis Saint-Joseph, 1894 are described from deep-sea lava rocks collected from 2,013 m at Cross Seamount, southwest of the Hawaiiarchipelago. Metavermilia zibrowii sp. nov., differs from its congeners mostly by the presence of a simple and concaveoperculum, extent of the thoracic membrane and tube morphology. Omphalopomopsis langerhansii (Marenzeller, 1885)is the type species of the genus and it is only known through its type specimen. This species is characterized by a simpleoperculum with a shallow convex calcareous endplate, cylindrical peduncle, presence of Apomatus chaetae and high num-ber of teeth in the thoracic uncini. This is the first record of this species outside the type locality and both genera are newly recorded for the Hawaiian Islands.


Zootaxa ◽  
2019 ◽  
Vol 4612 (2) ◽  
pp. 267
Author(s):  
VLADIMÍR NOVÁK ◽  
MAXIM YU. NABOZHENKO

A second species of the previously monotypic genus Cornucistela (C. anichtchenkoi sp. nov.) is described, illustrated and compared with C. serrata Campbell, 1980 (type species). It is a first record of the genus in Iran (South Khorasan Province). 


Zootaxa ◽  
2008 ◽  
Vol 1879 (1) ◽  
pp. 49
Author(s):  
YUEHUA SONG ◽  
ZIZHONG LI

The leafhopper genus Plumosa was erected by Sohi (1977). It belongs to the tribe Erythroneurini of Typhlocybinae with Plumosa emarginata Sohi, 1977 from India as its type species. Until now, there have been no further reports on this genus. Here the genus is reported for the first time from China and a new Chinese species is described and illustrated. The type specimens are deposited to the collection of the Institute of Entomology, Guizhou University, Guiyang, Guizhou (IEGU) and Illinois Natural History Survey (INHS).


Diversity ◽  
2019 ◽  
Vol 11 (8) ◽  
pp. 132
Author(s):  
Delane Kritsky ◽  
Masato Nitta

Platycephalotrema n. gen. (Dactylogyridae) is proposed for four new species and 5 previously described species parasitizing the gills of flatheads (Scorpaeniformes: Platycephalidae) as follows: Platycephalotrema ogawai n. sp. (type species) from Platycephalus sp. 1 (type host) and Platycephalus sp. 2, both of Nakabo & Kai (2013) (locally known as “Yoshino-gochi” and “Ma-gochi,” respectively) (Japan); Platycephalotrema austrinum n. sp. from Platycephalus endrachtensis Quoy & Gaimard (type host) and Platycephalus sp. (Australia); Platycephalotrema bassensis (Hughes, 1928) n. comb. from Platycephalus bassensis Cuvier (Australia); Platycephalotrema koppa n. sp. from Platycephalus fuscus Cuvier (Australia); Platycephalotrema macassarensis (Yamaguti, 1963) n. comb. from Platycephalus indicus (Linnaeus) (China, Macassar); Platycephalotrema mastix n. sp. from P. fuscus and P. endrachtensis (Australia); Platycephalotrema platycephali (Yin & Sproston, 1948) n. comb. from P. indicus (China) and P. fuscus (Australia); Platycephalotrema sinensis (Yamaguti, 1963) n. comb. from Cociella punctata (Cuvier) (China); Platycephalotrema thysanophrydis (Yamaguti, 1937) n. comb. from Inegocia japonica (Cuvier), Inegocia ochiaii Imamura, and Cociella crocodilus (Cuvier) (Japan, China). Other species requiring further study but potentially members of Platycephalotrema include Ancyrocephalus vesiculosus Murray, 1931, Haliotrema indicum Tripathi, 1957, Haliotrema swatowensis Yao, Wang, Xia, & Chen, 1998, and Haliotrema pteroisi Paperna, 1972. The primary features differentiating Platycephalotrema include species having: (1) tandem gonads (testis postgermarial); (2) two prostatic reservoirs, each emptying independently into the base of the male copulatory organ; (3) a dextral vaginal pore and large vaginal vestibule; (4) dorsal and ventral pairs of morphologically similar anchors; (5) a ventral bar with spatulate ends; (6) a dorsal bar with bifurcated ends, and (7) absence of an accessory piece. The new species are described, and P. thysanophrydis is redescribed based on newly collected and museum specimens.


2021 ◽  
Vol 95 ◽  
Author(s):  
J.D. Chero ◽  
C.L. Cruces ◽  
G. Sáez ◽  
A.G.L. Oliveira ◽  
C.P. Santos ◽  
...  

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.


Zootaxa ◽  
2007 ◽  
Vol 1466 (1) ◽  
pp. 55-67 ◽  
Author(s):  
ALENA SHIROKAYA

Gerstfeldtiancylus ushunensis, new species (Pulmonata: Basommatophora: Acroloxidae) is described from material collected in the littoral zone of Lake Baikal. This limpet has been found only at the type locality, Malye Olkhonskie Vorota, Ushun Bay. It is distinguished from all known Baikal acroloxids by the presence of scales on the dorsal jaw part and from other representatives of Gerstfeldtiancylus by the presence of a velum in the male copulatory organ, short salivary glands and the location of the posterior shell adductor. This new species is most similar to G. roepstorfi Shirokaya et al., 2003 based on the shape of teleoconch, and most closely resembles G. renardii (Dybowski, 1884) in terms of radular morphology. Species that are morphologically identical with G. ushunensis never accompany it. G. ushunensis coexists with G. benedictiae and G. kotyensis, which are easily distinguishable from the latter.


2008 ◽  
Vol 53 (3) ◽  
Author(s):  
Vernon Thatcher ◽  
Michelle Santos ◽  
Marilia Brasil-Sato

AbstractGamidactylus piranhus sp. nov. (Copepoda, Vaigamidae) from the nasal fossae of “San Francisco piranha”, Pygocentrus piraya (Cuvier, 1819) and.White piranha. Serrasalmus brandtii (Lütken, 1875) is described. The new species is similar to the type species of the genus, Gamidactylus jaraquensis Thatcher et Boeger, 1984, but differs from it in the following respects: the cephalothorax is shorter, the free thoracic segments are usually longer, leg 5 is reduced to a simple seta and a spine on the second antennal segment is lacking. Gamidactylus bryconis Varella, 1995 and Gamidactylus hoplius Varella et Malta, 1996, do not closely resemble the new species because they are much larger and both present leg 5 reduced to a double seta.


Zootaxa ◽  
2008 ◽  
Vol 1700 (1) ◽  
pp. 63 ◽  
Author(s):  
SYBELLE BELLAY ◽  
RICARDO MASSATO TAKEMOTO ◽  
FABIO HIDEKI YAMADA ◽  
GILBERTO CEZAR PAVANELLI

Sciadicleithrum frequens n. sp. is described from the gills of the acará, Geophagus brasiliensis (Cichlidae), from nine reservoirs in the State of Paraná, Brazil. The new species differs from the others members of Sciadicleithrum in the following features: dorsal anchors more than twice as long as the ventral anchors and hook pair 5 reduced in size. Sciadicleithrum frequens n. sp. is similar to species of this parasite genus from South America by having the male copulatory organ comprising less than 2 rings, and to species of Sciadicleithrum from Central America and southeast Mexico by the presence of longitudinal lateral grooves on the shafts and points of the ventral and dorsal anchors. This new species is the first species of Sciadicleithrum in South America with longitudinal lateral grooves on shafts and point of the ventral and dorsal anchors. It is the first dactylogyrid described from G. brasiliensis, and it is the first species of Sciadicleithrum described from Southern Brazil.


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