scholarly journals Svenzea, a new genus of Dictyonellidae (Porifera: Demospongiae) from tropical reef environments, with description of two new species

2002 ◽  
Vol 71 (4) ◽  
pp. 171-176 ◽  
Author(s):  
Belinda Alvarez ◽  
Rob W.M. van Soest ◽  
Klaus Rützler

The new genus Svenzea is created to group three sponge species from tropical reef environments of the Caribbean Sea and Indonesia: Pseudaxinella (?) zeai Alvarez, Van Soest & Rützler, Svenzea cristinae n. sp. and S. devoogdae n. sp. The genus shows affinities with members of both Halichondrida and Haplosclerida but it is assigned to the family Dictyonellidae based on shared microanatomical and developmental features. The higher taxonomic position of Svenzea is a subject for future investigations.

Zootaxa ◽  
2020 ◽  
Vol 4722 (4) ◽  
pp. 301-325
Author(s):  
RAFAEL LEMAITRE

Six species of hermit crabs of the family Paguridae from the Caribbean Sea and Gulf of Mexico region, including two new species, Anisopagurus asteriscus sp. nov. and Pagurus alarius sp. nov., are documented. The two new species are described, and recognition characters summarized for the four previously known species. Reports of the latter, Nematopaguroides fagei Forest & de Saint Laurent, 1968, N. karukera Lemaitre, Felder & Poupin, 2017, Paguriscus robustus Lemaitre, Felder & Poupin, 2017, and Pylopaguridium markhami McLaughlin & Lemaitre, 2001, represent range extensions for all four species. Color photographs are included for four of the species, as well as remarks on their taxonomy and distributions. All six species included can be categorized as micro-pagurids (with shield length rarely exceeding 2.0 mm), and were collected from cryptic reef habitats in Bocas del Toro, Panama; the French Antillean island of Guadeloupe; and the Gulf of Mexico coasts of Louisiana, Yucatán, and Florida Keys. The discovery of these new or rare species supports the conclusion of recent studies that the diversity of pagurids from the Caribbean region has yet to be fully realized. 


Author(s):  
Luis F. Parra-Carrera ◽  
Sergio I. Salazar-Vallejo

A new genus is established in Eunicidae: Fauchaldius gen. nov., a symbiont of hexactinellid sponges that has only subacicular hooks, with F. cyrtauloni sp. nov. as its type species. Nine new species are described in Eunice: E. hernandezi sp. nov., E. ibarzabalae sp. nov., E. mikeli sp. nov. and E. nonatoi sp. nov. all belonging to the fuscusbidentate group; E. edwinlinkae sp. nov., E. hartmanae sp. nov., E. lanai sp. nov., and E. miurai sp. nov. all belonging to the flavus-tridentate group; and E. donathi sp. nov. that belongs to the fuscus-unidentate group. Further, two new species are described in Marphysa: M. angeli sp. nov. that is grouped with species having only composite falcigers, and M. orensanzi sp. nov. that belongs to the group with composite falcigers and composite spinigers. A key to identify genera in Eunicidae is included. A key to identify species of Eunice is appended.


Zootaxa ◽  
2012 ◽  
Vol 3476 (1) ◽  
pp. 55 ◽  
Author(s):  
IORGU PETRESCU ◽  
TAPAS CHATTERJEE ◽  
NIKOLAOS V. SCHIZAS

Recent collections of the benthic macroand meiofauna associated with the mesophotic coral ecosystems of Puerto Rico haverevealed two new Cumacea from the family Nannastacidae. A new genus Cumellana and two new species, Cumellanacaribbica and Cumella alexandrinae are described herein. The new genus Cumellana can be distinguished from the other genera of the family Nannastacidae by having a long antennule and pereopod 2 with short terminal setae, equal in length.


Zootaxa ◽  
2021 ◽  
Vol 4950 (2) ◽  
pp. 398-400
Author(s):  
OKAN KÜLKÖYLÜOĞLU

Most recently, Coimbra et al. (2020) published an article in this journal (Zootaxa, 4729 (2): 177–194) questioning the taxonomic position of the genus Copytus Skogsberg, 1939 (Crustacea, Ostracoda) along with proposing it as the type genus of their new family (Copytidae Coimbra et al., 2020), and erecting two new species that were listed by previous authors as Copytus sp. 1 and Copytus sp. 2. The main diagnostic characteristics of their new proposed family (and the genus Copytus) are the hinge type and muscle scars on the carapace and/or valves (see lines 6–8 from the bottom, p. 179 in Coimbra et al. 2020). They also underlined that (p. 179) “...this study is based exclusively on the morphology of the animals’ hard parts”. While the authors considered another genus (Neocopytus) proposed by Külköylüoğlu, Colin & Kılıç (2007) of the family Neocytherididae as invalid, they interestingly transferred some species of Neocopytus to Copytus as species of their new family (Coimbra et al. 2020). Herein, my point with the comments listed below is to clarify that, when possible, both soft and hard parts should be considered in taxonomy, and such an integrated approach clearly indicates that Neocopytus is a valid and taxonomically useful genus. 


1959 ◽  
Vol S7-I (3) ◽  
pp. 252-259 ◽  
Author(s):  
Raymond Enay

Abstract Describes ammonites belonging to the family Tulitidae from Bathonian (Jurassic) localities of France. Specimens formerly attributed to Ammonites microstoma are assigned to the new genus Treptoceras, with two new species T. laurenti and T. crimaciense A complete specimen of Schwandorfia marginata is also described. The genera Sphaeroptychius, Schwandorfia, and Treptoceras are considered diagnostic of the middle and upper Bathonian.


Zootaxa ◽  
2012 ◽  
Vol 3504 (1) ◽  
pp. 56 ◽  
Author(s):  
YAPING CAI ◽  
YUNYUN ZHAO ◽  
CHUNGKUN SHIH ◽  
DONG REN

A new genus Mirabythus Cai, Shih et Ren, gen. nov. (type species, M. lechrius Cai, Shih et Ren, sp. nov.) and M. liae Cai, Shih et Ren, sp. nov. from the family Scolebythidae are described from the Early Cretaceous Yixian Formation of Huangbanjigou Village, Liaoning Province, northeastern China. These findings extend the existence of Scolebythidae to the Early Cretaceous of China, while providing evidence to support Engel and Grimaldi’s hypothesis that the family was widely distributed throughout the Cretaceous. Our two new species with clear venation also provide a comprehensive understanding of the venational changes from the Early Cretaceous to now. A key to the fossil and extant genera of Scolebythidae is provided.


Zootaxa ◽  
2020 ◽  
Vol 4728 (2) ◽  
pp. 227-236
Author(s):  
FRANCISCO LIMEIRA-DE-OLIVEIRA ◽  
DAYSE WILLKENIA A. MARQUES ◽  
STEPHEN D. GAIMARI ◽  
JOSÉ A. RAFAEL

A new genus of odiniids (Odiniidae: Traginopinae) is described from Brazil, Pauximyia gen. nov., with two species, P. oliveirai sp. nov. (type species) and P. vidali sp. nov. A modified key to the Neotropical genera of the family and for the two Pauximyia gen. nov. species is provided. 


Zootaxa ◽  
2011 ◽  
Vol 3032 (1) ◽  
pp. 47 ◽  
Author(s):  
CAROLINA NIETO ◽  
TOMÁŠ DERKA

Baetidae is one of the most diverse families of Ephemeroptera. In South America this family now encompasses 27 genera and more than 130 species. The Guyana region is known for its extraordinary diversity and high level of endemism, which is, above all, remarkable at the tops of the isolated flat-topped table mountains – tepuis. Recently various international speleological expeditions to Churí-tepui explored the cave systems of this mountain. Here we describe a new genus of Baetidae recently found during the mentioned expeditions to Churí-tepui and Auyán-tepui. Parakari n. gen. can be distinguish from the other genera of this family, among other characters, in the nymphs by the absence of abdominal gills I, tarsal claws with subapical denticle larger than the others, right mandible with prostheca bifid and pectinate and with incisors positioned in obtuse angle to mola area, lingua with a tuft of setae, segment II of maxillary palpi with a concavity and a hole apically and segment II of labial palpi with a strong distomedial projection. In the adults the hind wings are absent and genitalia with segment II of forceps with a constriction, segment III elongate and long. Two new species are included in this genus; each one was collected at different tepui. A key and illustrations are included.


1999 ◽  
Vol 68 (2) ◽  
pp. 95-108 ◽  
Author(s):  
Tatiana Menchini Steiner ◽  
A. Cecilia Z. Amaral

We review the family Histriobdellidae and provide species descriptions and notes on geographical distribution based on data from the literature. The morphological structures used in the systematics of this family are defined. A new genus, Dayus, is proposed and two new species from Brazil, Stratiodrilus robustus and S. circensis, are described.


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