Giving up on elaborate dermal ossicles: a new genus of ossicleless Apodida (Holothuroidea)

2017 ◽  
Vol 98 (7) ◽  
pp. 1685-1688 ◽  
Author(s):  
Camilla Souto ◽  
Luciana Martins ◽  
Carla Menegola
Keyword(s):  
New Species ◽  
Shallow Water ◽  
New Genus ◽  
The Body ◽  
The Other ◽  
Brazilian Coast ◽  
South Eastern ◽  
Phylogenetic Framework ◽  
A New Species ◽  
Calcareous Ring

In this paper we describe a new genus and a new species of Chiridotidae based on specimens collected in shallow water off the South-eastern Brazilian coast. Gymnopipina ikamiaba gen. nov. et sp. nov. is characterized by the complete absence of dermal ossicles in the body, and it differs from the other ossicleless apodids in the number of tentacles and of Polian vesicles, and in the morphology of the calcareous ring. Although not formally tested with a phylogenetic framework, apodids have apparently lost their dermal ossicles multiple times. If these reversions hold true, Gymnopipina gen. nov. represents the fourth independent loss of dermal ossicles in the class Holothuroidea. An identification key to the Brazilian apodid species is also provided.

scholarly journals Discovery of the Smallest Lace Bug from Mid-Cretaceous of Northern Myanmar Supports the Hypothesis of a Miniaturization Phenomenon of Insects in Kachin Amber (Hemiptera: Heteroptera: Tingidae)

Taxonomy ◽  
2021 ◽  
Vol 1 (2) ◽  
pp. 60-68
Author(s):  
Jun Souma ◽  
Shûhei Yamamoto ◽  
Yui Takahashi
Keyword(s):  
New Species ◽  
New Genus ◽  
The Other ◽  
Diagnostic Characters ◽  
Lace Bug ◽  
New Finding ◽  
A New Species

A total of 14 species in seven tingid genera have been described from the mid-Cretaceous Burmese (Kachin) amber from northern Myanmar, with very distinct paleofauna. Here, a new species of a new genus, Burmavianaida anomalocapitata gen. et sp. nov., is described from Kachin amber. This new species can be readily distinguished from the other described tingid taxa by the apparently smaller body and the structures of the pronotum and hemelytron. Burmavianaida gen. nov. shares the diagnostic characters with two clades composed of three extant subfamilies (Cantacaderinae + Tinginae) and Vianaidinae and may represent an extinct clade distinct from them. To the best of our knowledge, B. anomalocapitata sp. nov. is the smallest species of Tingidae among over 2600 described species. Our new finding supports the hypothesis of the miniaturization phenomenon of insects in Kachin amber, as suggested by previous studies.

VI.—Note on Ephippioceras clitellarium, J. de C. Sowerby, sp., and E. costatum, A. H. Foord

1900 ◽  
Vol 7 (12) ◽  
pp. 560-561
Author(s):  
G. C. Crick
Keyword(s):  
New Species ◽  
New Genus ◽  
British Museum ◽  
Acute Angle ◽  
The Body ◽  
Museum Collection ◽  
Body Chamber ◽  
Coal Measures ◽  
A New Species

The name Nautilus clitellarius was given by J. de C. Sowerby to a Nautiloid from the Coal-measures, Coalbrookdale, Shropshire, and the description was accompanied by three figures, each representing a different specimen. In 1884 the species was included by Professor Hyatt in his new genus Ephippioceras. In 1891 Dr. A. H. Foord found a new species, Ephippioceras costatum, which was said to be “distinguished from E. clitellarium (to which it is, however, very closely related) by the character of the septa and by the surface ornaments. The septa in E. costatum do not form such an acute lobe upon the periphery as do those of E. clitellarium, and they are also a little wider apart in the former species than they are in the latter. Moreover, E. costatum is provided with prominent transverse costæ, which are strongest upon the sides of the shell where they swell out into heavy folds. These costæ are directed obliquely backwards, and cross the septa at an acute angle, passing across the periphery and forming a shallow sinus in the middle. None of the specimens in the British Museum have the test preserved, so that the ribbing has only been observed upon casts. The costæ are equally well developed upon the body-chamber and upon the septate part of the shell in the adult, but they were either very feeble or altogether absent in the young.” A re-examination of the specimens in the Museum collection shows that the separation of the two forms is quite justifiable.

A new genus and species of Sclerodactylidae (Echinodermata: Holothuroidea: Sclerothyoninae) from the Pacific coast of Panama, and assignment of Neopentamera anexigua to Sclerothyoninae

Zootaxa ◽  
2018 ◽  
Vol 4429 (1) ◽  
pp. 157
Author(s):  
LUCIANA MARTINS ◽  
MARCOS TAVARES
Keyword(s):  
Body Wall ◽  
New Genus ◽  
Pacific Coast ◽  
The Body ◽  
The Other ◽  
Monotypic Genus ◽  
New Genus And Species ◽  
The Pacific ◽  
Calcareous Ring

Paulayellus gustavi, a new sclerodactylid genus and species, is described from the Pacific coast of Panama. The new genus and species is assigned to the subfamily Sclerothyoninae based on a suite of characters, which include the radial and interradial plates of the calcareous ring united at the base only. Paulayellus gen. nov. differs from the other Sclerothyoninae genera in having posterior processesof radial plates undivided. Additionally, differs from Sclerothyone, Thandarum and Neopentamera in having knobbed buttons, plates and cups in the body wall (whereas the body wall is furnished only with tables and plates in Sclerothyone, Temparena and Thandarum, and only with knobbed buttons and plates in Neopentamera). The new genus is, so far, monotypic. The also monotypic genus Neopentamera proved to have the radial and the interradial plates of the calcareous ring united at the base only, as typically found in the Sclerothyoninae, and is therefore transferred to that subfamily. The discovery of a new genus in the Sclerothyoninae and the transfer of Neopentamera required the amendation of the diagnosis for the subfamily. A key to the Sclerothyoninae is given. 

A review of the records of Pachycheles rugimanus A. Milne-Edwards, 1880 (Crustacea: Decapoda: Anomura: Porcellanidae) from Brazil, with the description of a new species

Zootaxa ◽  
2019 ◽  
Vol 4568 (1) ◽  
pp. 185 ◽  
Author(s):  
LUCIANE AUGUSTO DE AZEVEDO FERREIRA ◽  
MARCOS TAVARES
Keyword(s):  
New Species ◽  
Morphological Characters ◽  
The Other ◽  
Eastern Pacific ◽  
Brazilian Coast ◽  
Galapagos Island ◽  
Western Atlantic ◽  
The Third ◽  
Cocos Island ◽  
A New Species

All previous records of Pachycheles rugimanus A. Milne-Edwards, 1880, from the Brazilian coast are reviewed and prove to represent a new species, P. coelhoi sp. nov. (from Amapá, northern Brazilian coast), and P. ackleianus A. Milne-Edwards, 1880, a species already known from Brazil (from Pará to Rio de Janeiro). The new species is described and illustrated, and compared to its most similar congeners: P. rugimanus and P. ackleianus from the western Atlantic, and P. velerae Haig, 1960, from the eastern Pacific (Galapagos Island and Cocos Island). Pachycheles coelhoi sp. nov. is distinguishable from the other three species by a suite of morphological characters, which include the ornamentation of the carapace and chelipeds, and the shape of the third thoracic sternite. All previous records of P. rugimanus from Brazil are considered invalid. 

A new species of Branchiomaldane (Polychaeta: Arenicolidae) from the State of São Paulo, south-eastern Brazil

2001 ◽  
Vol 81 (3) ◽  
pp. 415-421 ◽  
Author(s):  
João Miguel de Matos Nogueira ◽  
Alexandra Elaine Rizzo
Keyword(s):  
New Species ◽  
Sao Paulo ◽  
The State ◽  
The Other ◽  
São Paulo ◽  
Stony Coral ◽  
South Eastern ◽  
Eastern Brazil ◽  
A New Species

A new species of Branchiomaldane was identified in a collection of polychaetes living in colonies of a stony coral. Branchiomaldane maryae sp. nov. differs from all other species of the genus by the presence of lensed eyes and 1–3 branchial filaments per parapodium. Comparisons between B. maryae sp. nov. and the other species of the genus are provided, together with some phylogenetic considerations on the position of the genus.

Douglasdeweya: A new genus, with a new species and a new combination (Triticeae: Poaceae)

2005 ◽  
Vol 83 (4) ◽  
pp. 413-419 ◽  
Author(s):  
C Yen ◽  
J L Yang ◽  
B R Baum
Keyword(s):  
New Species ◽  
New Genus ◽  
The Other ◽  
New Combination ◽  
Outstanding Scientist ◽  
Narrow Endemic ◽  
Morphological Findings ◽  
A New Species

The new genus Douglasdeweya C. Yen, J.L. Yang & B.R. Baum is based on results from cytogenetical and morphological findings — PPStSt genome — and is segregated from the genus Pseudoroegneria — StSt and StStStSt genome. Several characters, such as the erect spike with very finely spinulose pubescence along the two main angles of the rachis, and glumes and lemmas with a very strong midrib forming a keel-like structure distinguish Douglasdeweya from Pseudoroegneria, which has a rather lax spike, a rachis that is glabrous along the two main angles, and glumes and lemmas without a keel-like structure. The genus is named in memory of Dr. Douglas R. Dewey, an outstanding scientist who worked on the biosystematics of the perennial Triticeae. Two species are described, one of which is new, Douglasdeweya wangyii C. Yen, J.L. Yang & B. R. Baum and the other a new combination Douglasdeweya deweyi (K.B. Jensen, S.L. Hatch, & J.K. Wipff) C. Yen, J.L. Yang, & B.R. Baum. A key to the two species is provided, together with details on their taxonomy, nomenclature, distribution, and cytology.Key words: PPStSt genome, narrow endemic.

Primagistemus gen. nov. (Acari: Prostigmata: Stigmaeidae)

Zootaxa ◽  
2002 ◽  
Vol 29 (1) ◽  
pp. 1
Author(s):  
QING-HAI FAN ◽  
ZHI-QIANG ZHANG
Keyword(s):  
New Species ◽  
New Zealand ◽  
New Genus ◽  
The Other ◽  
Taxonomic Position ◽  
Fujian Province ◽  
Adult Females ◽  
A New Species

Primagistemus gen. nov. (Acari: Stigmaeidae) is described and its taxonomic position discussed. Adult females of this new genus are distinguished from those of Agistemus by having four pairs of setae on the propodosomal shield, by lacking postocular bodies, by having three pairs of aggenital setae and by having two setae on genu II. They are also distinguished from those of Stigmaeus by the terminal eupathidia on the palptarsus mostly fused and subterminally separated into three minute prongs, by both subcapitular setae posterolaterad of the pharynx, by having only one seta on coxa II, and by lacking endopodal shields around coxae III-IV. A new species, Primagistemus wuyiensis, from leaves of Araucaria sp. in Fujian Province of China, is described and illustrated. This new species is distinguished from the other species of the genus from New Zealand, Primagistemus loadmani (Wood) comb. nov. (transferred from Stigmaeus), by the distally truncated dorsal body setae and by setal lengths.

scholarly journals Meplitumen aluna gen. nov., sp. nov. an interesting eutardigrade (Hypsibiidae, Itaquasconinae) from the Sierra Nevada de Santa Marta, Colombia

ZooKeys ◽  
2019 ◽  
Vol 865 ◽  
pp. 1-20
Author(s):  
Oscar Lisi ◽  
Anisbeth Daza ◽  
Rosana Londoño ◽  
Sigmer Quiroga ◽  
Giovanni Pilato
Keyword(s):  
New Species ◽  
Sierra Nevada ◽  
New Genus ◽  
The Body ◽  
Unique Combination ◽  
Insertion Point ◽  
Pharyngeal Bulb ◽  
Caudal Extremity ◽  
A New Species

A new genus of Itaquasconinae, Meplitumengen. nov., and a new species, Meplitumenalunasp. nov., are described. The new genus has characters present in other genera of Itaquasconinae but in a unique combination. The spiral thickening of the bucco-pharyngeal tube is also present anteriorly to the insertion point of the stylet supports, excluding only the short portion where the apophyses for the insertion of the stylet muscles (AISM) are present. This character is similar to Astatumen Pilato, 1997 but Meplitumengen. nov. differs from this genus as stylet furcae are shaped differently and as stylet supports and placoids are present. The presence of a spiral thickening in a portion of the buccal tube anterior to the stylet supports distinguishes the new genus from Mesocrista Pilato, 1987, Platicrista Pilato, 1987 and Itaquascon de Barros, 1939. Meplitumengen. nov. also differs from Mesocrista, in having the caudal processes of the AISM pointing laterally (instead of postero-laterally), and the apices of the caudal processes of the stylet furcae unswollen. From Itaquascon the new genus also differs by having more robust stylet supports, pharyngeal bulb with placoids, stylet furcae differently shaped. Meplitumengen. nov. also differs from Platicrista in having caudal processes of the AISM more robust and not flexible, and more slender stylet supports. The new species, Meplitumenalunasp. nov., has a cuticle with a very faint roughness at the caudal extremity of the body, and eyes probably absent. The pharyngeal bulb is long, with two long, narrow, rod-shaped macroplacoids; a microplacoid and septulum are absent. The claws are well developed with main branches provided with accessory points, and at the base of the claws, a structure interpretable as a very thin lunule is present. Other cuticular thickenings on the legs are absent.

scholarly journals On a new species of Spirobranchus Blainville, 1818 (Annelida: Serpulidae) and considerations on the genus along the Brazilian coast

2020 ◽  
Vol 60 ◽  
pp. e20206051
Author(s):  
Ivison Cordeiro Brandão ◽  
Ana Claudia dos Santos Brasil
Keyword(s):  
New Species ◽  
Rio De Janeiro ◽  
The Other ◽  
Brazilian Coast ◽  
Compound Eyes ◽  
Tropical Regions ◽  
The Family ◽  
The Caribbean ◽  
A New Species ◽  
Scanning Electron

Spirobranchus are abundant and diverse serpulids in tropical regions, with three species reported in Brazil, which occurrence is questionable, due to their distant type localities. In the present work, we describe a new species of Spirobranchus from the Brazilian coast and report the other species of the genus occurring off Brazilian shoreline, based on specimens from different locations. Specimens were collected in the states of Alagoas, Rio de Janeiro, and Santa Catarina, sorted and analyzed under a stereoscopic microscope. Then, the animals were anesthetized and subsequently fixed and prepared for the scanning electron microscopy. Specimens from the Caribbean and other Brazilian states were loaned from Museu Nacional of Universidade Federal do Rio de Janeiro, Universidade Estadual do Rio de Janeiro and Universidade Federal de Alagoas. Morphological analyzes differentiated the three species and provided details of the morphology that can be used in the future taxonomy of the family. The species S. giganteus and S. tetraceros are more similar to each other, but can be readily separated based on the spiral radiolar crown in the former; S. minutus differs from the other species for the tube, operculum, and type of uncini. Spirobranchus lirianeae sp. nov. nests within S. kraussii-complex, with a concave operculum, absence of collar chaetae and paired compound eyes on the radioles, differing by being a solitary rather than a gregarious species, by the funnel-shaped operculum, fringed tonguelets and tube with single keel, distally pointed.

Shallow-water squat lobsters (Crustacea, Decapoda, Galatheidae) from Mayotte (Comoros Island), La Réunion and Madagascar, with the description of a new genus and two new species

Zootaxa ◽  
2010 ◽  
Vol 2612 (1) ◽  
pp. 57 ◽  
Author(s):  
ENRIQUE MACPHERSON ◽  
RÉGIS CLEVA
Keyword(s):  
New Species ◽  
Shallow Water ◽  
New Genus ◽  
La Réunion ◽  
Pacific Waters ◽  
The Indian Ocean ◽  
Shallow Water Species ◽  
A New Species ◽  
Water Species ◽  
Comoros Island

Shallow water species of galatheid crustaceans collected in Mayotte (Comoros Island), La Réunion and Madagascar have been studied. The collection contains one species of Sadayoshia and seven species of the genus Galathea, including a new species (G. denticulata) closely related to G. amamiensis known from the Indian Ocean and western Pacific waters, a new genus (Macrothea) and species (M. bouchardi). The new genus is closely related to the genus Fennerogalathea and it is easily distinguished by the following combination of characters: (1) rostrum with 4 strong lateral teeth on each side, (2) spines present on epigastric and hepatic regions only, (3) telson completely subdivided, (4) pereiopods 2–4 dactyli sharply biunguiculate. The new genus is also close to Lauriea Baba, 1971, from which it can be differentiated, among other characters, by the shape of the endopod of uropods and the number of male gonopods.

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