Two New Diosaccids (Copepoda, Harpacticoida) from the Northern Gulf of Mexico

Bouck, L. Michelle Sangster; Thistle, David

doi:10.1163/156854003323009830

Cited by 2 publications

(1 citation statement)

References 6 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Even in genera with a reduced segmentation and armature of appendages, such as Schizopera Sars, 1905, antennal exopod is two-segmented (Karanovic & Cho, 2016;Karanovic & Cooper, 2012;Karanovic, Kim & Grygier, 2015;Karanovic & McRae, 2013). A one-segmented antennal exopod could be found in the family Miraciidae (in the genera Miracia Dana, 1846, Protopsammotopa Geddes, 1968, Parialysus Nicholls, 1941, and Diosaccus Boeck, 1873 but they all differ in so many characters from marloni that there could be no doubt in the convergent evolution of this character (see Bouck & Thistle, 2004;Geddes, 1968;Huys & Böttger-Schnack, 1994;Itô, 1974Itô, , 1982Lang 1948Lang , 1965. Of the three species currently recognised in the genus Pseudamphiascopsis Lang, 1944 two have a two-segmented and one has a one-segmented antennal exopod, but they always have only one lateral seta (Lang 1948).…”

Section: Affinities Of Korean Sarsamphiascusmentioning

confidence: 99%

Cladistic and quantitative shape analyses of five new syntopic Sarsamphiascus (Copepoda, Harpacticoida): problems and solutions for diosaccin systematics and taxonomy

Karanovic

2020

Systematics and Biodiversity

View full text Add to dashboard Cite

DESCRIPTION: Female [based on holotype and six paratypes] Body length, from tip of rostrum to posterior margin of caudal rami (excluding caudal setae and appendages), from 590 to 630 μm. Colour of preserved specimens yellowish. Nauplius eye not visible. Prosome comprising cephalothorax (Ct) with completely fused first pedigerous somite and three free pedigerous somites (Fp1 -Fp3); urosome comprising six urosomites (U1 -U6), which include fifth pedigerous somite (U1), genital double-somite (fused genital (U2) and first abdominal (U2) somites), two free abdominal somites without appendages (U4 and U5), and anal somite (U6) with caudal rami (Cr) on posterior margin. Habitus (Figs. 2.1, 10.2) most robust of all Korean species, cylindrical, without distinct demarcation between prosome and urosome; prosome/urosome ratio about 1.1; greatest width at posterior end of cephalothorax. Integument of all somites well sclerotized, smooth, prosomites without pits or spinules, urosomites with numerous rows of minute spinules in addition to large posterior spinules (except first urosomite). Hyaline fringes of all somites wide (except last urosomite, which carries caudal rami, and genital somite, which fused to third urosomite); those of cephalothorax and free pedigerous somites smooth (Figs. 2.2, 2.3), those of urosomites finely serrated (Figs. 2.4, 2.6, 3.1, 3.2). Surface of somites and caudal rami with total maximum of 177 cuticular organs (14 pairs of cuticular pores, 74 pairs of sensilla, and one unpaired dorsal sensillum); additional pores (but not sensilla) present on some appendage segments, and also many setae and spines on antennula and mouth appendages with pore on top (only observable by SEM).Rostrum (Figs. 2.2, 3.3) large, almost as long as first two segments of antennula combined, sharply pointed, beaklike, well demarcated at base from cephalothorax, about three times as long as wide, with single dorsal pair of sensilla (Ct-1) at about 3/5 of its length.Cephalothorax (Fig. 2.2) smooth, cylindrical in dorsal view, tapering towards anterior end in lateral view, representing nearly 38 % of total body length (excluding rostrum). Cephalothoracic shield with two pairs of pores (Ct-I and Ct-II), 32 pairs of sensilla (Ct-2 to Ct-15 and Ct-17 to Ct-34), and one unpaired dorsal sensillum (Ct-16); both pores of similar size, about as large as circular base of sensilla; all sensilla of similar size, long, simple, and slender; sensilla pair Ct-2 at base of rostrum; lateral marginal zone includes sensilla ; posterior marginal zone includes sensilla Ct-29 to Ct-34 (see Fig. 2.2).Pleuron of first free prosomite (second pedigerous somite) (Fig. 2.3) with 10 pairs of long sensilla (Fp1-1 to Fp1-10), one unpaired dorsal pore (Fp1-I), and one pair of lateral anterior pores (Fp1-II); posterior marginal zone includes sensilla Fp1-1, Fp1-2, and Fp1-4 to Fp1-9, while sensillum Fp1-3 situated slightly more anteriorly; lateral marginal zone includes only sensillum Fp1-10; sensilla Fp1-9 and Fp1-10 probably serially homologous to sensilla Ct-...

show abstract

Section: Affinities Of Korean Sarsamphiascusmentioning

confidence: 99%

Cladistic and quantitative shape analyses of five new syntopic Sarsamphiascus (Copepoda, Harpacticoida): problems and solutions for diosaccin systematics and taxonomy

Karanovic

2020

Systematics and Biodiversity

View full text Add to dashboard Cite

show abstract

An annotated checklist and keys to the species of Copepoda Harpacticoida (Crustacea)

Wells

2007

Zootaxa

260

194

View full text Add to dashboard Cite

A checklist of the approximately 4300 species of Copepoda Harpacticoida is presented. It is prepared according to the opinions of the latest revisers and adopts the phylogenetic system of Seifried (2003). The opportunity is taken to formally propose replacement names for preoccupied taxa (p. 14). Comments are provided on other taxonomic issues. A dichotomous key to families is followed by tabular keys to species within each family.

show abstract

Two New Diosaccids (Copepoda, Harpacticoida) from the Northern Gulf of Mexico

Abstract: We describe two new species of Diosaccidae (Copepoda, Harpacticoida) from an unvegetated sand at 18 m depth in the northern Gulf of Mexico. One is assigned to the genus Protopsammotopa;

Cited by 2 publications

References 6 publications

Cladistic and quantitative shape analyses of five new syntopic Sarsamphiascus (Copepoda, Harpacticoida): problems and solutions for diosaccin systematics and taxonomy

Cladistic and quantitative shape analyses of five new syntopic Sarsamphiascus (Copepoda, Harpacticoida): problems and solutions for diosaccin systematics and taxonomy

An annotated checklist and keys to the species of Copepoda Harpacticoida (Crustacea)

Contact Info

Product

Resources

About