A New Species of Parasitic Copepod, Caligus clemensi sp. nov. (Caligoida: Caligidae), from Pelagic Fishes in the Coastal Waters of British Columbia

1964 ◽  
Vol 21 (5) ◽  
pp. 873-889 ◽  
Author(s):  
R. R. Parker ◽  
L. Margolis

Adult females and males of Caligus clemensi sp. nov. from the body surface of British Columbia fishes are described. The known hosts are Oncorhynchus kisutch, O. gorbuscha, O. keta, Clupea pallasi, Gasterosteus aculeatus, Hexagrammos sp. and Theragra chalcogrammus. This is the only species of Caligus known from the coastal waters of British Columbia. "Caligus gurnardi Krøyer" of Fraser, 1920, is synonymous with the new species.

1967 ◽  
Vol 45 (4) ◽  
pp. 491-496 ◽  
Author(s):  
J. Lützen

A new species, Herpyllobius elongata (Family Herpyllobiidae, parasitic cope-pods on polynoid worms), is described. Three females were found on Hololepidella tuta (Grube) from Fulford Harbour, Saltspring Island, British Columbia. The species seems most closely related to H. polynoes (Krøyer), but deviates from all other herpyllobiids by having the stalk in continuation of the body axis, and not perpendicular to the horizontal plane through the ectosoma. The male is unknown. Descriptions and records from the waters of southern British Columbia – northern Washington are also given for two other species, H. haddoni Lützen and H. polynoes (Krøyer).


2010 ◽  
Vol 55 (4) ◽  
Author(s):  
Delfina Cantatore ◽  
Juan Timi

AbstractA new species of a parasitic copepod, Acanthochondria helicoleni sp. nov. (Copepoda, Chondracanthidae), is described and illustrated from specimens collected within the branchial chambers of the rubio, Helicolenus lahillei Norman, 1937, from the Argentinean waters. The new species most closely resemble A. serrani Braicovich et Timi, 2009 collected in the same region, but differs in the general measurements and proportions of the body; primarily by the relative length of neck, shape of head, shape and size of genito-abdominal tagma and relative size of the trunk postero-lateral processes.


1963 ◽  
Vol 41 (1) ◽  
pp. 115-124 ◽  
Author(s):  
Larry S. Roberts

A new species of parasitic copepod occurring in western North America is described, Ergasilus nerkae n. sp. An emendation of E. turgidus Fraser, 1920 and a redescription of E. auritus Markevich, 1940 are presented. A total of four species resembling E. caeruleus (E. turgidus, E. confusus Bere, 1931, E. auritus, and E. nerkae) have so far been described, and characters to distinguish the species of this group are given.


Crustaceana ◽  
2015 ◽  
Vol 88 (7-8) ◽  
pp. 809-838 ◽  
Author(s):  
Shozo Sawamoto ◽  
Khwanruan Srinui ◽  
Mitsuyasu Moriya

Anisomysis (Javanisomysis) gutzui Băcescu, 1992 was reported as a characteristic species, of which the fourth male pleopod possesses an un-segmented exopod and no endopod. The species is placed in the valid genus Javanisomysis on the basis of the characteristics of the fourth male pleopod; however, the definition of the genus was insufficient. In the present paper, re-examination of the genus Javanisomysis is carried out on the basis of paratypes loaned from the depository in Romania. We found that major morphological characteristics of the types are common to those of the species of the genus Anisomysis, particularly in the forms of the antennal scale, labrum, thoracopodal endopods, and fourth male pleopod. On the basis of the present results, the genus Javanisomysis is reinstated as a subgenus in the genus Anisomysis. The subgenus Javanisomysis is allied to the subgenus Anisomysis in the forms of the body, eye, antennular peduncle, and mandibular palp, but is separable in the following characteristics: carapace armed with spinules on the antero-lateral margin; in the fourth male pleopodal exopod the first segment as long as or slightly shorter than the third segment, excluding the terminal setae; and the telson with un-articulated denticles on the lateral margin. In addition, A. (J.) similis n. sp. is described on the basis of specimens collected from Phuket, Thailand. The new species can be separated from A. (J.) gutzui as follows: the fourth male pleopod without a projection at the expanded corner on the first segment, the telson distally triangular in shape, and an undivided carpopropodus of the sixth thoracopodal endopod in females. Anisomysis (A.) thurneysseni Nouvel, 1973 also shares with the new species such remarkable features as those in the spinules on the carapace, denticles on the telson, and the length of the first segment relative to the third one in the fourth male pleopodal exopod; and accordingly this species is also considered to be a member of the subgenus Javanisomysis. This subgenus thus currently contains three species, A. (J.) gutzui Băcescu, 1992, A. (J.) similis n. sp. and A. (J.) thurneysseni Nouvel, 1973.


2014 ◽  
Vol 59 (4) ◽  
Author(s):  
Balu Maran ◽  
Seong Moon ◽  
Thamir Adday ◽  
Najim Khamees ◽  
Jung-Goo Myoung

AbstractA new species of bomolochid copepod Nothobomolochus ilhoikimi sp. n., (Cyclopoida), is described based on adult females collected from the gills of hilsa shad Tenualosa ilisha (Hamilton) (Actinopterygii, Clupeidae) captured in waters off Iraq. The new species differs from its congeners by having the following combination of characters in the adult female: 1) anal somite not spinulate; 2) paragnath blunt and robust; 3) maxilla with slender proximal segment and distal segment with 2 accessory processes terminally; 4) the distal exopodal segment of leg 1 with 3 small spines; and 5) the terminal endopodal segment of leg 4 carrying one long and one short spine. It closely resembles N. triceros (Bassett-Smith, 1898) but prominently differs in above features and also in host specificity. In addition, another bomolochid Orbitacolax hapalogenyos (Yamaguti and Yamasu, 1959) is redescribed based on material collected from Japanese threadfin bream Nemipterus japonicus (Bloch) (Perciformes, Nemipteridae) captured in waters off Iraq. Two species clusters, the hapalogenyos and the analogus groups are recognized in this genus.


Zoosymposia ◽  
2009 ◽  
Vol 2 (1) ◽  
pp. 81-89 ◽  
Author(s):  
CHERYL A. BRANTLEY

A new species of Poecilochaetus (Polychaeta: Poecilochaetidae) is described from coastal waters off Southern California. Much of the material was collected as part of the benthic infaunal survey work carried out by the Sanitation Districts of Los Angeles County as part of their ocean monitoring program. Numerous specimens of this new species have also been collected throughout the Southern California Bight during U.S. Environmental Protection Agency (EPA) regional surveys in 1994, 1998, and 2003. The distinct characters of this new species were first noted three decades ago, but a formal description was never published. These specimens have been reported frequently in survey data under the provisional name Poecilochaetus sp. A. The number of branchial filaments, the location of these filaments along the body, and the absence of a middorsal chitinous plate on setiger 9 make Poecilochaetus martini sp. nov. unique. This new species also has elongated interramal papillae on the branchiate setigers, a character only recently noted. P. martini sp. nov. is compared to other branchiate species in the genus that also have interramal structures.


1960 ◽  
Vol 92 (8) ◽  
pp. 605-608 ◽  
Author(s):  
G. A. Bradley

Aphids of the species described below were first seen by the author at Cowichan Lake, Vancouver Island, in 1956. Additional observations and collections were made in 1959 at several other locations in southern British Columbia.The species is unique in that it is apparently the only one in the genus living on western hemlock, Tsuga heterophylla (Raf.) Sarg.All measurements of the body and appendages are in millimetres.


Nematology ◽  
2018 ◽  
Vol 20 (7) ◽  
pp. 653-669 ◽  
Author(s):  
Oleg Gorgadze ◽  
Elena Fanelli ◽  
Manana Lortkhipanidze ◽  
Alberto Troccoli ◽  
Medea Burjanadze ◽  
...  

Summary A new species of entomopathogenic nematode, Steinernema borjomiense n. sp., was isolated from the body of the host insect, Oryctes nasicornis (Coleoptera: Scarabaeidae), in Georgia, in the territory of Borjomi-Kharagauli. Morphological characters indicate that the new species is closely related to species of the feltiae-group. The infective juveniles are characterised by the following morphological characters: body length of 879 (777-989) μm, distance between the head and excretory pore = 72 (62-80) μm, pharynx length = 132 (122-142) μm, tail length = 70 (60-80) μm, ratio a = 26.3 (23.0-29.3), H% = 45 (40-51), D% = 54 (47-59), E% = 102 (95-115), and lateral fields consisting of seven ridges (eight incisures) at mid-body. Steinernema borjomiense n. sp. was molecularly characterised by sequencing three ribosomal regions (the ITS, the D2-D3 expansion domains and the 18S rRNA gene) and the mitochondrial COI gene. Phylogenetic analyses revealed that S. borjomiense n. sp. differs from all other known species of Steinernema and is a member of the monticolum-group.


Zootaxa ◽  
2021 ◽  
Vol 4941 (2) ◽  
pp. 239-258
Author(s):  
YUN-HE WU ◽  
XIAO-LONG LIU ◽  
WEI GAO ◽  
YU-FAN WANG ◽  
YING-CHUN LI ◽  
...  

Approximately half of the species in speciose genus Raorchestes were described during the past 10 years, yet only 11 species are known from Southeast Asia and southern China (SEA-SC), adjacent Himalayas, and northeastern India. Field work in northwestern Yunnan province, China resulted in the discovery of one new species in the genus based on morphological and molecular analyses. The new species is diagnosed by small size with 15.0–19.0 mm SVL in adult males (n=3); tongue pyriform, notched posteriorly; rudimentary webbing between toes; fingers and toes with narrow lateral dermal fringes; tibiotarsal articulation reaching anterior of the eye when hindlimb is stretched along the side of the body; relative finger lengths: I < II < IV < III, relative toe lengths: I < II < V < III < IV; inner metatarsal tubercle oval, outer metatarsal tubercle absent; finger discs and toe discs greyish or orange; flank near the crotch with a distinct black region between two creamy white patches, and the thigh having a similar black patch near the groin, proximal to another creamy white patch; a distinct “) (”-shaped dark marking on the back; male with external single subgular vocal sac; nuptial pad absent. A phylogenetic tree was reconstructed based on the mitochondrial genes for 16S rRNA and ND1. The results indicated that these individuals form a monophyletic group, and show high genetic divergence to their closest relatives within the genus (uncorrected p-distances > 3.2%) by distance of 16S comparable to the divergence between recognized Raorchestes species. This study further enriches the diversity of rhacophorids, especially in northwestern Yunnan. 


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