Deep-Water Caprellids (Amphipoda: Caprellidea) from the Bay of Biscay: A New Species and a New Locality Record

1996 ◽  
Vol 16 (3) ◽  
pp. 626 ◽  
Author(s):  
Diana R. Laubitz ◽  
Jean Claude Sorbe
1993 ◽  
Vol 71 (5) ◽  
pp. 997-1002 ◽  
Author(s):  
Dale R. Calder

Bougainvillia aberrans n.sp. is described from Bermuda in the western North Atlantic Ocean. Specimens were collected at a depth of 150 fathoms (274 m) from the polypropylene buoy line of a crab trap. The hydroid colony of B. aberrans is erect, with a polysiphonic hydrocaulus, a smooth to somewhat wrinkled perisarc, hydranths having a maximum of about 16 tentacles, and medusa buds arising only from hydranth pedicels. Medusae liberated in the laboratory from these hydroids differ from all other known species of the genus in having a long, spindle-shaped manubrium, lacking oral tentacles, having marginal tentacles reduced to mere stubs, and being very short-lived (surviving for a few hours at most). Gonads develop in medusa buds while they are still attached to the hydroids, and gametes are shed either prior to liberation of the medusae or shortly thereafter. The eggs are surrounded by an envelope bearing nematocysts (heterotrichous microbasic euryteles). The cnidome of both hydroid and medusa stages consists of desmonemes and heterotrichous microbasic euryteles. The diagnosis of the genus Bougainvillia is modified to accommodate this new deep-water species.


Zootaxa ◽  
2003 ◽  
Vol 339 (1) ◽  
pp. 1 ◽  
Author(s):  
KIM LARSEN ◽  
MAGDALENA BLAZEWICZ-PASZKWYCZ

The male and female of Neotanais krappschickelae n.sp., from the Subantarctic off the Falkland Islands are described from the RV Eltanin deep-water cruises of 1962. Both male and female of the new species can be separated from other species by the combination of characters including: a densely setose dorsal margin of the cheliped carpus, dactylus and fixed finger of subequal length; cheliped sclerite, all pereopodal bases, and posterior-lateral edges of pereonites with numerous plumose setae. The recent activity within tanaidacean taxonomy including neotanaid taxonomy has made it necessary to re-diagnose Neotanais.


Zootaxa ◽  
2018 ◽  
Vol 4521 (1) ◽  
pp. 125 ◽  
Author(s):  
CARLO M. CUNHA ◽  
LUIZ RICARDO L. SIMONE

Acteonidae d'Orbigny, 1843 is the largest family within the superfamily Acteonoidea (Bouchet et al. 2017) and includes small gastropods typical of infralittoral environments. Most acteonids living on the continental shelf or in deep water have been described on the basis of shell morphology alone (Simone 2006; Valdés 2008; Cunha 2011; Salvador & Cunha 2016), because little material with soft parts has been collected and examined. Consequently, little is known about the ecology of the species.  Recently, many new species of the genus Acteon Montfort, 1810 have been described from tropical Southwest Pacific waters (Valdés 2008), suggesting that a high diversity of acteonid species may await discovery in other deep water environments, including those of Brazil. 


Zootaxa ◽  
2018 ◽  
Vol 4403 (3) ◽  
pp. 540 ◽  
Author(s):  
GABRIEL E. RAMOS-TAFUR

A new species of deep water alpheid shrimp, Alpheus luiszapatai sp. nov., from Arusí, Chocó, Pacific coast of Colombia is described. The single female known was collected between the discarded bycatch of deep water shrimp trawls dedicated to the commercial fisheries of the “coliflor” shrimp Solenocera spp. This new species is placed putatively in the Alpheus brevirostris (Olivier, 1811) species group, and share some external morphological characters with Alpheus hephaestus Bracken-Grissom & Felder, 2014. It can be differentiated by the shape and ornamentation of major and minor chelipeds, the propodi and dactyli of third to fifth pereopods, the diaresis of uropodal exopod, the length of the rostral carina, color in life and bathymetric distribution. Additional comparison with another congeners pertaining to this species group complex from the eastern Pacific, western Atlantic and other oceanographic regions is discussed. A key for Alpheus brevirostris species group from the eastern Pacific is presented. 


Zootaxa ◽  
2012 ◽  
Vol 3522 (1) ◽  
pp. 73
Author(s):  
PETER J. F. DAVIE ◽  
PETER K. L. NG

Platepistoma seani sp. nov. is described from deep water off KwaZulu-Natal Province, South Africa. It can be separatedfrom its nearest relative, Platepistoma guezei (Crosnier, 1976), by its thicker setal covering that completely hides the an-terolateral teeth from dorsal view, less well defined carapace regions, more spinous anterolateral and posterolateral cara-pace margins, sparser but more prominent dorsal carapace spines, more prominent spines on the carpus of the cheliped, and a relatively narrower male telson.


ZooKeys ◽  
2017 ◽  
Vol 716 ◽  
pp. 1-17 ◽  
Author(s):  
Nicolas Lavesque ◽  
Guillemine Daffe ◽  
Paulo Bonifácio ◽  
Pat Hutchings

2015 ◽  
Vol 89 (6) ◽  
pp. 1068-1075 ◽  
Author(s):  
Jack W. Kallmeyer ◽  
William I. Ausich

AbstractA new crinoid association reported from the Kope Formation (Katian, Ordovician) of northern Kentucky and southwestern Ohio changes the model for facies distribution of crinoids along an Ordovician onshore-offshore depth gradient. Glyptocrinus nodosus n. sp., Plicodendrocrinus casei (Meek, 1871), Cincinnaticrinus varibrachialis (Warn and Strimple, 1977), and Ectenocrinus simplex (Hall, 1847) are reported from a suspension-feeding assemblage with 26 taxa. This assemblage developed above an argillaceous packstone with most of the fossils preserved in shale. The fauna was comprised principally of secondary epifaunally tiered suspension feeders, deposit feeders, and predators. This is the first reported occurrence of Glyptocrinus Hall, 1847 and Plicodendrocrinus Brower, 1995 from the Kope Formation (lower Cincinnatian), and Glyptocrinus is represented by a new species, G. nodosus. Also, this is the first report of pinnulate camerate crinoids from the deep-water facies of the Kope Formation. Thus, deep-water Cincinnatian crinoid assemblages were comprised of disparids, cladids, and camerates; and the assemblage was characterized by a variety of filtration fan types for acquisition of resources.


Zootaxa ◽  
2011 ◽  
Vol 3086 (1) ◽  
pp. 57 ◽  
Author(s):  
MARCOS TAVARES ◽  
ALLYSSON P. PINHEIRO

A new species of the deep-water crab genus Chaceon Manning & Holthuis, 1989 (Geryonidae Colosi, 1923), is described from southwestern Atlantic. It is the ninth species of the genus known from the western Atlantic. It is most closely related to C. eldorado Manning & Holthuis, 1989, C. notialis Manning & Holthuis, 1989, and C. ramosae Manning, Tavares & Albuquerque, 1989, from which it can be readily differentiated in having the dactyli of P2-P5 laterally compressed, instead of being dorsoventrally depressed. A key to the western Atlantic species of Chaceon is provided.


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