Distribution and abundance of the pelagic processid, Processa pippinae Wicksten & Méndez, 1985 (Decapoda, Caridea, Processidae), collected during the TALUD XIV cruise in the Gulf of California, Mexico, and description of a new genus

Crustaceana ◽  
2012 ◽  
Vol 85 (4-5) ◽  
pp. 463-472 ◽  
Author(s):  
Michel E. Hendrickx
Keyword(s):  
Posterior Margin ◽  
Gulf Of California ◽  
New Genus ◽  
Morphological Characteristics ◽  
The Other ◽  
Dorsal Margin ◽  
Posterior Lobe ◽  
Additional Material ◽  
Abdominal Somite ◽  
The Third

The pelagic processid, Processa pippinae Wicksten & Méndez, 1985, has been reported previously as an endemic species in the northern Gulf of California, Mexico. Additional material collected accidentally in a benthic sledge and with a mid-water micronecton net is reported, including a series of small-sized specimens (CL 2.2 mm). The shape of the laterally compressed rostrum of this species varies considerably with size and among adult specimens. Based on several morphological characteristics of P. pippinae, a new genus, Maryprocessa, is proposed. Several unique characteristics separate Maryprocessa new genus from the other five genera of Processidae, including the laterally compressed rostrum overreaching the cornea, unique among the Processidae, the extraordinary long antennal and antennular flagella, the posterior lobe on the dorsal margin of the third abdominal somite, and the long, acute pair of spines on the posterior margin of the sixth abdominal somite.

A new deep-sea species of the genus Systellaspis (Decapoda, Caridea, Oplophoridae) in the western Pacific

Crustaceana ◽  
2015 ◽  
Vol 88 (10-11) ◽  
pp. 1181-1192 ◽  
Author(s):  
Zhongli Sha ◽  
Yanrong Wang
Keyword(s):  
Deep Sea ◽  
Posterior Margin ◽  
Western Pacific ◽  
Dorsal Margin ◽  
Abdominal Somite ◽  
The Third ◽  
Deep Waters ◽  
Medial Dorsal ◽  
The Western Pacific ◽  
A New Species

A new species ofSystellaspisSpence Bate, 1888,Systellaspis liuisp. nov., was discovered in the deep waters of the western Pacific. It is closely allied toS. debilis(A. Milne-Edwards, 1881), but it differs morphologically in the blade of the scaphocerite being equipped with a medial dorsal groove, the spines on pereiopods 1 to 5, the dorsal margin of the third abdominal somite with a carina, the posterior margin of the fifth abdominal somite, and the dorsal margin of the telson armed with at least two rows of spines on each side. A key to the species ofSystellaspisis provided.

scholarly journals Siamopsis gen. nov. and five new species of the subfamily Cypridopsinae Kaufmann, 1900 (Crustacea: Ostracoda) from Thailand

2017 ◽  
Author(s):  
Sukonthip Savatenalinton
Keyword(s):  
New Species ◽  
Posterior Margin ◽  
New Genus ◽  
Soft Part ◽  
Terminal Segment ◽  
The Other ◽  
Dorsal Margin ◽  
Left Valve ◽  
The Family ◽  
The Right

Siamopsis gen. nov., described here, belongs to a group of genera with the right valve overlapping the left valve in the subfamily Cypridopsinae Kaufmann, 1900 of the family Cyprididae Baird, 1845. The distinguishing characters of the new genus are in the morphology of its valves and soft parts. The postero-dorsal margin of the internal left valve is plate-like protruded. The morphology of this plate varies in different species, e.g., some species bear a tooth-like tubercle on the plate. The posterior margin of the right valve is recurved inwardly at ca mid-height, resulting in the occurrence of a lobe-like expansion that can clearly be seen in the dorsal and caudal views of the carapace. In addition, the other diagnostic soft part features of the new genus are the cylindrical caudal ramus, the presence of two t-setae on the female A2 penultimate segment, the very elongated terminal segment of the Mx1 palp, the morphology of the two large bristles (tooth bristles) of the Mx1 third endite (one smooth, one serrated) and the absence of d-seta on T1. In the present paper, five new species are described under this new genus: Siamopsis renateae gen. et sp. nov., S. suttajiti gen. et sp. nov., S. conspecta gen. et sp. nov., S. khoratensis gen. et sp. nov. and Siamopsis planitia gen. et sp. nov. A key to the species of Siamopsis gen. nov. is also provided.

A CHROMATOGRAPHIC INVESTIGATION OF Δ4-3-KETOSTEROIDS AND α-KETOLIC STEROIDS IN HUMAN URINE

1953 ◽  
Vol 9 (4) ◽  
pp. 401-417 ◽  
Author(s):  
CONSTANCE de COURCY ◽  
I. E. BUSH ◽  
C. H. GRAY ◽  
J. BARBARA LUNNON
Keyword(s):  
Paper Chromatography ◽  
Human Urine ◽  
The Other ◽  
Additional Material ◽  
The Third ◽  
Neutral Ph ◽  
Chromatographic Investigation ◽  
Final Fraction ◽  
Conjugated Steroids

The Δ4-3-ketosteroids and α-ketolic steroids present in extracts prepared by five different procedures from urine have been examined by paper chromatography. The first extract, which consisted of those steroids extractable with chloroform at neutral pH contained cortisone and cortisol* and one to four unknown Δ4-3-ketosteroids. The second extract, representing steroids extractable immediately after acidification to pH 1 contained very little additional material. The third fraction consisted of extra steroids liberated after standing for 24 hr with acid; this rarely contained any detectable steroid material. A fraction which contained chloroform-soluble conjugated steroids was found to include small quantities of cortisone and cortisol and the other Δ4-3-ketosteroids. The final fraction contained large quantities of steroids liberated by hydrolysis with β-glucuronidase; these were mainly α-ketolic steroids including pregnane-3α: 17α: 21-triol-11: 20-dione, together with other unknown Δ4-3-ketosteroids. The distribution of the steroids in the various fractions is discussed and suggestions are made concerning the possible structure of some of the unknown steroids.

The parasitic crustaceans of fishes from the Brazilian Amazon. 11. Vaigamidae fam. nov. (Copepoda: Poecilostomatoida) with males and females of Vaigamus retrobarbatus gen. et sp. nov. and V. spinicephalus sp. nov. from plankton

1984 ◽  
Vol 62 (4) ◽  
pp. 716-729 ◽  
Author(s):  
Vernon E. Thatcher ◽  
Barbara A. Robertson
Keyword(s):  
New Genus ◽  
Narrow Band ◽  
Antennal Segment ◽  
Brazilian Amazon ◽  
Thoracic Segment ◽  
The Other ◽  
The Third ◽  
Genital Segment ◽  
Pigment Distribution ◽  
Males And Females

Vaigamus retrobarbatus gen. et sp. nov. and V. spinicephalus sp. nov. (Copepoda: Poecilostomatoida) are described. The specimens were obtained by examining plankton samples from floodplain lakes of the Amazon River Basin in Brazil. The new genus is distinguished from all other genera and families in the suborder by the presence of retrostylets projecting laterally from the first thoracic segment and a long tapering rostral spine between the bases of the antennae. Vaigamidae fam. nov. is proposed for these forms. The two new species of the new genus are distinguished on the basis of the following characters. Size: retrobarbatus is larger than spinicephalus. Cephalothorax: that of spinicephalus is more ovoid. Pigment distribution: retrobarbatus had a broad transverse band of color on the cephalothorax while spinicephalus has a narrow band on the fourth thoracic segment. Rostral spine: spinicephalus has a spine with a subbasal swelling while that of the other species is smoothly tapering. Genital segment: that of retrobarbatus is more hexagonal. Antennal claw: in retrobarbatus the claw is longer than the third antennal segment while in the other species it is shorter. Leg 4: retrobarbatus has one fewer segment in each ramus than has the other species. Leg 6: that of retrobarbatus is longer.

Opaepupu, a new genus and species of bivalve-associated shrimp (Decapoda: Caridea: Palaemonidae) from Hawai’i

Zootaxa ◽  
2021 ◽  
Vol 4903 (1) ◽  
pp. 55-70
Author(s):  
ARTHUR ANKER ◽  
SAMMY DE GRAVE
Keyword(s):  
New Species ◽  
Posterior Margin ◽  
New Genus ◽  
Dorsal Surface ◽  
Phylogenetic Position ◽  
New Genus And Species ◽  
The Third ◽  
Small Tooth ◽  
Female Holotype ◽  
A New Species

A new palaemonid shrimp genus, Opaepupu gen. nov., is established to accommodate a new species of bivalve-associated shrimp, Opaepupu huna sp. nov. from Hawaii. A single mated pair, the female holotype and the male allotype, were found inside the trapezid bivalve Trapezium oblongum (Linnaeus, 1758) at a depth of 14 m in Kâne’ohe Bay, Hawai’i. The new genus is characterised by the rostrum being proximally broad, distally pointed, mid-dorsally carinate, and non-dentate; the anterolateral margin of the carapace without supraorbital, hepatic or epigastric teeth, but with a strong sharp antennal tooth; the sixth pleonite posteriorly unarmed; the telson medially depressed, with the dorsal surface armed with two pairs of submarginal cuspidate setae and with the posterior margin armed with two pairs of spiniform setae; the distolateral angle of the first article of the antennular peduncle without a sharp tooth; the mandible without a palp; the maxillular palp furnished with one long stiff seta dorsal to a small tooth-like extension; the first maxilliped without a palp; the third maxilliped not being operculate; the second pereiopods moderately robust, relatively slender, subequal, subsymmetrical, with simple teeth on the cutting edges of the fingers; the ambulatory pereiopods being slender, each ending in an elongate biunguiculate dactylus; and the uropodal exopod with a faint diaeresis and greatly reduced distolateral spiniform seta. The phylogenetic position of Opaepupu gen. nov. remains unclear, although it does not appear to be closely related to other bivalve-associated palaemonid genera. 

A new genus of giant lacewing (Insecta, Neuroptera, Ithonidae) from the Middle Jurassic of China

Zootaxa ◽  
2019 ◽  
Vol 4613 (2) ◽  
pp. 375
Author(s):  
QIANG YANG ◽  
CHAOFAN SHI ◽  
HONG PANG ◽  
DONG REN
Keyword(s):  
Middle Jurassic ◽  
Inner Mongolia ◽  
New Genus ◽  
Hind Wing ◽  
Color Pattern ◽  
The Other ◽  
Morphological Similarity ◽  
New Genus And Species ◽  
Wing Membrane ◽  
The Third

A new genus and species of Ithonidae, Puripolystoechotes pumilus gen. et sp. nov., is described from the Middle Jurassic of Inner Mongolia, China. The new genus is distinguished by possessing a hind wing with a simple humeral vein, only three ra-rp crossveins, M forked slightly distal to origin of RP1, and wing membrane without color pattern. This is the third ithonid genus from this locality, showing interesting morphological similarity with the other ithonids from the same locality and period. 

scholarly journals A new fossil soldier beetle (Coleoptera, Cantharidae, Silinae) from Eocene Baltic amber

Zootaxa ◽  
2018 ◽  
Vol 4370 (2) ◽  
pp. 189 ◽  
Author(s):  
FABRIZIO FANTI ◽  
MICHAEL J. PANKOWSKI
Keyword(s):  
New Genus ◽  
Morphological Characteristics ◽  
The Other ◽  
Taxonomic Position ◽  
Baltic Amber ◽  
Lateral Margin ◽  
New Taxon ◽  
New Genus And Species

A new genus and species of fossil soldier beetle Markus karenae gen. et sp. nov. is described and illustrated from Eocene Baltic amber. Its morphological characteristics place it in the taxonomic position of the subfamily Silinae. It is characterized by a particular lateral pronotal shape with two difform processes, pronotum slightly longer than wide, with a blunt and evident angle near the basal angles, anterior and posterior margins flat and with shallow punctation, and lateral margin strongly granulose and in relief. Furthermore, each of its legs has a claw with one acute tooth at the base, except for the posterior legs where the tooth appears to be blunt. The new taxon is morphologically compared with the other fossil representatives of Silinae from Baltic amber, and with extant Palearctic genera. 

Five new species of Axiidae (Crustacea: Decapoda: Axiidea) from deep-water off Taiwan, with description of a new genus

Zootaxa ◽  
2010 ◽  
Vol 2352 (1) ◽  
pp. 1 ◽  
Author(s):  
TOMOYUKI KOMAI ◽  
FENG-JIAU LIN ◽  
TIN-YAM CHAN
Keyword(s):  
New Species ◽  
Deep Water ◽  
New Genus ◽  
The Other ◽  
The Third ◽  
Number Of Species ◽  
Deep Waters

One new genus and five new species of axiid burrowing shrimps are described from deep-waters around Taiwan: Formosaxius dorsum n. gen., n. sp.; Ambiaxius propinquus n. sp., Calastacus formosus n. sp.; Eiconaxius rubrirostris n. sp. and E. kensleyi n. sp. The new genus, Formosaxius, appears closest to Bouvieraxius Sakai & de Saint Laurent, 1989 in the arrangement and armature of the gastric carinae on the carapace and the possession of pleurobranchs, but the presence of appendices internae on the third to fifth pleopods readily separates the new genus from Bouvieraxius. Affinities of the other four new species are also discussed. This study raises the number of species of Axiidae known from Taiwan to 13.

scholarly journals Phylogenetic relationships of the South American Doradoidea (Ostariophysi: Siluriformes)

2014 ◽  
Vol 12 (3) ◽  
pp. 451-564 ◽  
Author(s):  
José L. O. Birindelli
Keyword(s):  
Phylogenetic Analysis ◽  
New Genus ◽  
Morphological Characteristics ◽  
Morphological Characters ◽  
The Other ◽  
Phylogenetic Position ◽  
South American ◽  
Parsimony Analysis ◽  
The South ◽  
Large Size

A phylogenetic analysis based on 311 morphological characters is presented for most species of the Doradidae, all genera of the Auchenipteridae, and representatives of 16 other catfish families. The hypothesis that was derived from the six most parsimonious trees support the monophyly of the South American Doradoidea (Doradidae plus Auchenipteridae), as well as the monophyly of the clade Doradoidea plus the African Mochokidae. In addition, the clade with Sisoroidea plus Aspredinidae was considered sister to Doradoidea plus Mochokidae. Within the Auchenipteridae, the results support the monophyly of the Centromochlinae and Auchenipterinae. The latter is composed of Tocantinsia, and four monophyletic units, two small with Asterophysusand Liosomadoras, and Pseudotatiaand Pseudauchenipterus, respectively, and two large ones with the remaining genera. Within the Doradidae, parsimony analysis recovered Wertheimeriaas sister to Kalyptodoras, composing a clade sister to all remaining doradids, which include Franciscodorasand two monophyletic groups: Astrodoradinae (plus Acanthodorasand Agamyxis) and Doradinae (new arrangement). Wertheimerinae, new subfamily, is described for Kalyptodoras and Wertheimeria. Doradinae is corroborated as monophyletic and composed of four groups, one including Centrochirand Platydoras, the other with the large-size species of doradids (except Oxydoras), another with Orinocodoras, Rhinodoras, and Rhynchodoras, and another with Oxydorasplus all the fimbriate-barbel doradids. Based on the results, the species of Opsodoras are included in Hemidoras; and Tenellus, new genus, is described to include Nemadoras trimaculatus, N. leporhinusand Nemadoras ternetzi. Due to conflicting hypotheses of the phylogenetic position of Acanthodoras, Agamyxis, and Franciscodoras, these are considered as incertae sedisin Doradidae. All suprageneric taxa of the Doradoidea are diagnosed based on synapomorphic morphological characteristics.

scholarly journals XI. On Asterochlænopsis, a new genus of zygopterid tree-ferns from Western Siberia

1930 ◽  
Vol 218 (450-461) ◽  
pp. 447-471 ◽  
Keyword(s):  
New Genus ◽  
Western Siberia ◽  
The Other ◽  
Present Writer ◽  
Type Specimens ◽  
The Third ◽  
Tree Ferns

About fifty years ago a Swedish, engineer picked up a silicified stem near Semipalatinsk, in the Kirgis Steppes in Western Siberia. The fossil was cut transversely into several slabs, at least five of which ultimately found their way to Germany. One of the pieces reached the hands of K. G. Stenzel of Breslau and he described it in 1889 under the name Asterochloena (Clepsydropsis) kirgisica . Another fragment came into the hands of A. Schenk, then professor of botany at Leipzig, and apparently in ignorance of Stenzel’s fossil, he described it in the same year under a distinct name, Rachiopteris ludwigii Leuckart and Schenk. The ultimate sources of the two specimens are so nearly identical that the present writer, in a paper published in 1919, suggested that they were probably pieces of one and the same stem. This suspicion was recently confirmed in an indirect way by Prof. Karl Wanderer of Dresden (see below), and since then all doubt on the matter has been removed by a direct comparison of the two type-specimens, which have been found to fit against each other. Besides these two fragments it has been possible, during a recent tour in Europe, to relate to the same original stem three other pieces, one of which was preserved in Dresden, one in Chemnitz and the third in Breslau. The Breslau fragment, originally in the possession of Goeppert, was mentioned by Stenzel in his memoir, already cited above ; the other two specimens do not appear to have been noticed in the literature (see text-fig. 1).

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