New species of Lumbricillus (Oligochaeta, Enchytraeidae) from littoral habitats of British Columbia

1981 ◽  
Vol 59 (7) ◽  
pp. 1302-1311 ◽  
Author(s):  
Kathryn Coates
Keyword(s):  
British Columbia ◽  
New Species ◽  
Small Species ◽  
Gland Cells ◽  
Intertidal Species ◽  
Wood Debris ◽  
Upper Intertidal ◽  
Intertidal Habitats ◽  
Littoral Habitats

Three new marine, intertidal species of Lumbricillus are described from oligochaete collections taken in British Columbia. Lumbricillus tsimpseanis sp.nov., which was collected in upper intertidal habitats near Prince Rupert, is similar in morphology and habitat to L. helgolandicus Michaelsen emend. Nielsen and Christensen and L. kamtschatkanus Michaelsen, but is characterized by gland cells both around the spermathecal orifice and along its ectal duct. Specimens of Lumbricillus curtus sp.nov., a small species, were collected from three well-separated silty upper intertidal habitats. It is characterized by enlarged posterior lobes of the pharyngeal (=septal) glands of 6/7 and by spermathecae which unite with the oesophagus at one-half V. Lumbricillus rupertensis sp.nov., from intertidal silty sediments with much wood debris near Prince Rupert, is similar to L. lineatus with which it was found, but is characterized by a globular ampullar expansion lateral to the connection of the spermatheca with the oesophagus.

New species of Tubificoides Lastockin (Oligochaeta; Tubificidae) from the Pacific Northeast and the Arctic

1983 ◽  
Vol 61 (6) ◽  
pp. 1270-1283 ◽  
Author(s):  
H. R. Baker
Keyword(s):  
British Columbia ◽  
New Species ◽  
The Arctic ◽  
The Pacific ◽  
Species Groups ◽  
Intertidal Habitats

Descriptions of six new species of marine or estuarine tubificid oligochaetes are given. Tubificoides kozloffi sp.nov., and Tubificoides brevicoleus sp.nov. are described from intertidal habitats of Washington and British Columbia. Tubificoides foliatus sp.nov., a species previously identified as belonging to the Tubificoides gabriellae complex, is described from California and British Columbia. Tubificoides cuspisetosus sp.nov., Tubificoides palacoleus sp.nov., and Tubificoides crenacoleus sp.nov. are described from the Arctic. A key to the species-groups of Tubificoides is given.

New species of Bathydrilus Cook (Oligochaeta; Tubificidae) from British Columbia

1983 ◽  
Vol 61 (9) ◽  
pp. 2162-2167 ◽  
Author(s):  
H. R. Baker
Keyword(s):  
British Columbia ◽  
New Species ◽  
Shallow Water ◽  
Vancouver Island ◽  
Glandular Epithelium ◽  
Northeast Pacific ◽  
Intertidal Habitats ◽  
Shallow Water Species ◽  
Water Species

Bathydrilus litoreus n. sp., from intertidal habitats of British Columbia and Washington, is distinguished from other members of the genus by the combination of possessing histologically bipartite atria, atrial ducts, bilobed glandular sacs about the penial setae, patches of glandular epithelium between the dorsal setal bundles, and thickened epidermal pads ventrally in X. Bathydrilus torosus n. sp., from the intertidal of southwest Vancouver Island, is the only known shallow-water species of Bathydrilus to lack modified penial setae; it lacks dorsal patches of glandular epithelium and thickened epidermal pads ventrally in X but does possess atrial ducts and histologically bipartite, very muscular atria. Both B. litoreus and B. torosus lack copulatory sacs and pseudopenes. These are the first species of the genus to be described from the Northeast Pacific.

New marine species of Marionina and Enchytraeus (Oligochaeta, Enchytraeidae) from British Columbia

1980 ◽  
Vol 58 (7) ◽  
pp. 1306-1317 ◽  
Author(s):  
Kathryn Coates
Keyword(s):  
British Columbia ◽  
New Species ◽  
Pacific Coast ◽  
Marine Species ◽  
Coarse Sand ◽  
Fine Sediments ◽  
The Pacific ◽  
Unusual Combination ◽  
Upper Intertidal ◽  
Three New Species

Four new species of Marionina and one of Enchytraeus have been discovered during marine oligochaete surveys in British Columbia. Three new species of Marionina, M. vancouverensis, M. charlottensis, and M. neroutsensis, are similar to a group of other species including M. spicula (Leuckart, 1847), M. brevis Finogenova, 1977, M. istriae Giere, 1974, and M. sublittoralis Erséus, 1976. Marionina vancouverensis is estuarine; M. charlottensis is less estuarine and associated with upper intertidal algae such as Fucus and Enteromorpha; M. neroutsensis is also an upper intertidal form but from saturated fine sediments. In contrast, M. trevori has an unusual combination of generic characters separating it from other species of the genus. It was collected from coarse sand with decaying algae near a sewage outflow. Enchytraeus rupus is similar to several other small Enchytraeus species only a few of which have been found intertidally and none previously on the Pacific coast of North America.

Orbiniella nuda new species (Orbiniidae) and nine new records of other sedentariate polychaetous annelids from Washington and British Columbia

1974 ◽  
Vol 52 (1) ◽  
pp. 69-75 ◽  
Author(s):  
Katharine D. Hobson
Keyword(s):  
British Columbia ◽  
New Species ◽  
Pacific Ocean ◽  
New Records ◽  
Descriptive Information ◽  
Northeastern Pacific

Orbiniella nuda, new species, is newly described from Washington. Naineris quadricuspida, Pygospio elegans, Pherusa negligens, Asclerocheilus beringianus, Euzonus williamsi, Barantolla americana, Decamastus gracilis, Mediomastus capensis, and Stygocapitella subterranea are newly recorded from Washington or from Washington and British Columbia. Most of these species have not previously been reported from the cold temperate northeastern Pacific Ocean. In addition, new descriptive information is provided for some species.

DESCRIPTION D’UN GENRE NOUVEAU DE KEROPLATIDAE DE L’OUEST NORD-AMÉRICAIN (DIPTERA: MYCETOPHILOIDEA)

1980 ◽  
Vol 112 (6) ◽  
pp. 545-548 ◽  
Author(s):  
Loïc Matile ◽  
J. R. Vockeroth
Keyword(s):  
British Columbia ◽  
New Species ◽  
New Genus

AbstractRobsonomyia reducta, new genus and new species, is described from males collected in British Columbia and California. Characters distinguishing it from other genera of Macrocerinae are discussed.

scholarly journals Description of two new sympatric species of the genus Hisonotus Eigenmann and Eigenmann, 1889, from upper Rio Tapajós, Mato Grosso state, Brazil (Pisces: Ostariophysi: Loricariidae)

2007 ◽  
Vol 67 (3) ◽  
pp. 413-420 ◽  
Author(s):  
HA. Britski ◽  
JC. Garavello
Keyword(s):  
New Species ◽  
Anterior Part ◽  
Sympatric Species ◽  
Growing Up ◽  
Small Species ◽  
Mato Grosso ◽  
Moderate Number ◽  
Two New Species ◽  
Yellow Line

Two new species of the genus Hisonotus are described from the upper Rio Tapajós basin, Mato Grosso State, Brazil. They are small species, growing up to about 30.0 mm SL, having the scapular bridge wide and totally exposed or having a small median pair of arrector fossae, and the abdomen completely covered with large plates in adult specimens (about 23.0 mm SL). They are distinguished from their congeners by the following combination of characters: Hisonotus chromodontus has 20-40 reddish-brown tipped premaxillary teeth, and 15-38 on the dentary bones; 2324 plates on the longitudinal series; a prominent large dark brown lateral stripe extending from the tip of the snout to the caudal blotch; transversal dark brown bars very inconspicuous or absent. Hisonotus luteofrenatus has a moderate number (12-28) of hyaline or slightly yellow-tipped premaxillary teeth, and 9-26 on the dentary bones; 25-26 plates on the longitudinal series; a characteristic yellow line extending from the anterior part of each orbit, over the inferior nostril, both converging to the tip of the snout.

Vadicola aprostatus gen. nov., sp. nov., a marine oligochaete (Tubificidae; Rhyacodrilinae) from British Columbia

1982 ◽  
Vol 60 (12) ◽  
pp. 3232-3236 ◽  
Author(s):  
H. R. Baker
Keyword(s):  
British Columbia ◽  
Ejaculatory Duct ◽  
Coarse Sand ◽  
Prostate Cells ◽  
Freshwater Influence ◽  
Intertidal Habitats

Vadicola aprostatus gen. nov., sp. nov., a marine tubificid (Annelida; Oligochaeta) from intertidal habitats of British Columbia (usually coarse sand without obvious freshwater influence), is characterized by an internal projection in the ejaculatory duct and a lack of prostate cells on the atria. Vadicola aprostatus is placed in the subfamily Rhyacodrilinae.

Two new species of stalked crinoids from the northeastern Pacific in the genera Gephyrocrinus and Ptilocrinus (Echinodermata, Crinoidea, Hyocrinidae). Effects of ontogeny and variability on hyocrinid taxonomy

Zootaxa ◽  
2011 ◽  
Vol 2825 (1) ◽  
pp. 1 ◽  
Author(s):  
MICHEL ROUX ◽  
PHILIP LAMBERT
Keyword(s):  
British Columbia ◽  
New Species ◽  
Single Species ◽  
Depth Range ◽  
Evolutionary Trend ◽  
Exceptional Collection ◽  
The Family ◽  
Two New Species ◽  
Northeastern Pacific ◽  
Stalked Crinoids

Two new species of deep-sea stalked crinoids belonging to the family Hyocrinidae were collected in the northeastern Pacific. The descriptions contain detailed information on character variations and ontogeny. The five specimens of Gephyrocrinus messingi n. sp. lived at depths ranging from 1,777 m to 2,110 m off British Columbia and California. This new species is the first record of the genus Gephyrocrinus in the Pacific Ocean, which was previously known from only a single species, G. grimaldii, from the northeastern Atlantic at the same depth range. The two species illustrate opposing phenotypes within the same genus. Fifty-eight specimens of the second new species, Ptilocrinus clarki n. sp., were dredged off British Columbia close to the type-locality of P. pinnatus, the type species of the genus Ptilocrinus, but at shallower depths ranging from 1,178 to 1,986 m. This exceptional collection provides significant data on intraspecific variation in the main morphological characters, especially arm pattern. The ontogeny of stalk articulations and the main traits of adoral plate differentiation are described in detail. A complementary investigation on P. pinnatus was conducted using specimens collected by the “Albatross” expedition at a depth of 2,906 m. Despite similarities in external morphology, tegmen and cover plates, the two ptilocrinid species display significant differences in pinnule architecture, aboral cup and stalk articulations. From comparison with Gephyrocrinus messingi n. sp. and Ptilocrinus clarki n. sp., G. grimaldii and P. pinnatus are interpreted as the result of heterochronic development by paedomorphy after ecological or geographic isolation. Pinnule architecture in the two new species suggests first steps in an evolutionary trend toward a rigid box which protects gonad inflation in the proximal part of the pinnule. These new data on Ptilocrinus and Gephyrocrinus create problems in the current taxonomy of the family Hyocrinidae. The main derived characters, especially in pinnule and arm pattern, are used to propose new hypotheses for hyocrinid phylogeny.

Occella impi, a New Species of Sea Poacher from British Columbia with Notes on Related Species (Agonidae, Pisces)

1970 ◽  
Vol 27 (6) ◽  
pp. 1109-1114 ◽  
Author(s):  
C. G. Gruchy
Keyword(s):  
British Columbia ◽  
New Species ◽  
Related Species ◽  
Single Specimen ◽  
Queen Charlotte Islands ◽  
A New Species

Occella impi, a new species of sea poacher, is described from a single specimen captured in the Queen Charlotte Islands, British Columbia. Occella impi differs from other species of Occella in having spinous plates on the breast, the anus nearer the anal fin, and fewer anal rays; also, the numbers of bony body plates are distinctive. A key to the known species of Occella, based primarily on the numbers of bony body plates, is included. The size of the maxillary barbel and number of infralateral plates are shown to be characteristic of the genera Occella and Stellerina.

Megalobatrachonema (Chabaudgolvania) waldeni n.sp. (Nematoda: Kathlaniidae) from the intestine of the northwestern salamander, Ambystoma gracile (Baird)

1988 ◽  
Vol 66 (7) ◽  
pp. 1502-1505 ◽  
Author(s):  
Jane P. M. Richardson ◽  
Martin L. Adamson
Keyword(s):  
British Columbia ◽  
New Species ◽  
Excretory Pore ◽  
Oesophageal Bulb ◽  
A New Species

A new species of kathlaniid nematode, Megalobatrachonema waldeni, from the intestine of the northwestern salamander, Ambystoma gracile, in British Columbia is described. The new species is placed in the subgenus Megalobatrachonema (Chabaudgolvania) as it lacks valves in the oesophageal bulb. Megalobatrachonema waldeni differs from the two other members of this subgenus, M. elongatum (Baird, 1958) and M. terdentatum (Linstow, 1890), in having large cervical alae and distinctly separate lips, and in lacking hypodermal lip peduncles and a pseudosucker. Megalobatrachonema waldeni has simpler onchia, smaller spicules, and a more prominent swelling at the base of the oesophageal corpus than M. elongatum, and differs from M. terdentatum by its distinct corpus swelling, more anterior excretory pore, fewer caudal papillae, and longer tail.

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