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A new species of Metacyclops from a hyporheic habitat in North Vietnam (Crustacea, Copepoda, Cyclopidae).

Kołaczyński A - Zookeys (2015)

Bottom Line: The latter character separates the new Metacyclops from its closest relative, Metacyclops ryukyuensis, known only from the Ryukyu Islands (Ishigaki).The genus Metacyclops with the new species described herein is also for the first time recorded from Vietnam.An identification key is provided to the south and east Asian species of the genus.

View Article: PubMed Central - HTML - PubMed

Affiliation: Museum and Institute of Zoology Polish Academy of Sciences, Wilcza 64, 00-679 Warszawa, Poland.

ABSTRACT
A new species of Metacyclops is described from hyporheic waters and small rock depression with leaf litter in North Vietnam, the Tam Đao Mountains). Metacyclops amicitiae sp. n. can be distinguished from its congeners by the unique combination of the following characters: 12-segmented antennule, distal segment of P4 endopodite bearing a single apical spine, and the surface ornamentation of the intercoxal sclerites in P1-P4 (pilose on the distal margin of P1-P4 and spinulose on the caudal surface of P4). The latter character separates the new Metacyclops from its closest relative, Metacyclops ryukyuensis, known only from the Ryukyu Islands (Ishigaki). The genus Metacyclops with the new species described herein is also for the first time recorded from Vietnam. An identification key is provided to the south and east Asian species of the genus.

No MeSH data available.


Related in: MedlinePlus

Metacyclopsamicitiae sp. n. female, holotype. A antennal coxobasis and enp1, frontal B antennal coxobasis and enp1-2, caudal C mandible D maxillulary arthrite E maxillulary palp F maxilla, caudal G maxilliped, thin hairs on the frontal surface of basipodite are not shown. Scale bars 50 µm.
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Figure 2: Metacyclopsamicitiae sp. n. female, holotype. A antennal coxobasis and enp1, frontal B antennal coxobasis and enp1-2, caudal C mandible D maxillulary arthrite E maxillulary palp F maxilla, caudal G maxilliped, thin hairs on the frontal surface of basipodite are not shown. Scale bars 50 µm.

Mentions: Antenna (Fig. 2A, B) armed with 3, 1, 9, and 7 setae on coxobasis and three-segmented endopodite, respectively. Exopodite seta long, reaching beyond enp3. Coxobasis bearing five groups of spinules on caudal surface (Fig. 2B), longer spinules present on lateral margin near base of segment, and three groups of spinules present on frontal surface (Fig. 2A).


A new species of Metacyclops from a hyporheic habitat in North Vietnam (Crustacea, Copepoda, Cyclopidae).

Kołaczyński A - Zookeys (2015)

Metacyclopsamicitiae sp. n. female, holotype. A antennal coxobasis and enp1, frontal B antennal coxobasis and enp1-2, caudal C mandible D maxillulary arthrite E maxillulary palp F maxilla, caudal G maxilliped, thin hairs on the frontal surface of basipodite are not shown. Scale bars 50 µm.
© Copyright Policy - creative-commons-attribution
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC4591735&req=5

Figure 2: Metacyclopsamicitiae sp. n. female, holotype. A antennal coxobasis and enp1, frontal B antennal coxobasis and enp1-2, caudal C mandible D maxillulary arthrite E maxillulary palp F maxilla, caudal G maxilliped, thin hairs on the frontal surface of basipodite are not shown. Scale bars 50 µm.
Mentions: Antenna (Fig. 2A, B) armed with 3, 1, 9, and 7 setae on coxobasis and three-segmented endopodite, respectively. Exopodite seta long, reaching beyond enp3. Coxobasis bearing five groups of spinules on caudal surface (Fig. 2B), longer spinules present on lateral margin near base of segment, and three groups of spinules present on frontal surface (Fig. 2A).

Bottom Line: The latter character separates the new Metacyclops from its closest relative, Metacyclops ryukyuensis, known only from the Ryukyu Islands (Ishigaki).The genus Metacyclops with the new species described herein is also for the first time recorded from Vietnam.An identification key is provided to the south and east Asian species of the genus.

View Article: PubMed Central - HTML - PubMed

Affiliation: Museum and Institute of Zoology Polish Academy of Sciences, Wilcza 64, 00-679 Warszawa, Poland.

ABSTRACT
A new species of Metacyclops is described from hyporheic waters and small rock depression with leaf litter in North Vietnam, the Tam Đao Mountains). Metacyclops amicitiae sp. n. can be distinguished from its congeners by the unique combination of the following characters: 12-segmented antennule, distal segment of P4 endopodite bearing a single apical spine, and the surface ornamentation of the intercoxal sclerites in P1-P4 (pilose on the distal margin of P1-P4 and spinulose on the caudal surface of P4). The latter character separates the new Metacyclops from its closest relative, Metacyclops ryukyuensis, known only from the Ryukyu Islands (Ishigaki). The genus Metacyclops with the new species described herein is also for the first time recorded from Vietnam. An identification key is provided to the south and east Asian species of the genus.

No MeSH data available.


Related in: MedlinePlus