Cyclopina curtijeju, Karanovic, 2020
publication ID |
https://dx.doi.org/10.3897/zookeys.992.54856 |
publication LSID |
lsid:zoobank.org:pub:E604D905-F161-482D-9944-75496EEFF427 |
persistent identifier |
https://treatment.plazi.org/id/D1D520C8-2BC3-4A0B-B00C-A9BBC730D4A8 |
taxon LSID |
lsid:zoobank.org:act:D1D520C8-2BC3-4A0B-B00C-A9BBC730D4A8 |
treatment provided by |
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scientific name |
Cyclopina curtijeju |
status |
sp. nov. |
Cyclopina curtijeju View in CoL sp. nov. Figures 11 View Figure 11 , 12 View Figure 12 , 17C View Figure 17
Type locality.
South Korea, South Coast, Jeju Island, Gwangchigi Beach near Seongsan Sunrise Peak, 33°27.122'N, 126°55.481'E.
Specimens examined.
Holotype female dissected on one slide, collected from the type locality, 14 April 2014, leg. T. Karanovic. Paratype female on an SEM stub (together with specimens of other three species described here; row no. 3), collected from the type locality, 14 April 2014, leg. T. Karanovic.
Etymology.
The species name is composed of the Latin adjective curtus (= short), referring to its short caudal rami, and the name of the type locality (Jeju). It should be treated as a noun (gender feminine) in apposition to the generic name.
Description.
Female (based on holotype and one paratype). Body length 400 μm. Colour (Fig. 17C View Figure 17 ), nauplius eye, body segmentation, integument on somites (Fig. 12 View Figure 12 ), and general habitus as in C. busanensis , except for different sensilla and pores pattern on prosomites (Fig. 12A-D View Figure 12 ) and hyaline fringes of urosomites (except anal somite) rather wavy than serrated (Fig. 12F-H View Figure 12 ). Prosome ca. 1.4 × as long as urosome.
Genital double-somite (Fig. 12E, F View Figure 12 ) as in C. busanensis , except with two additional dorsolateral pair of pores, one additional ventrolateral pair of pores, posterior lateral pore almost at same level as posterior lateral sensillum (instead of being anterior to posterior lateral sensillum), and sensillum instead of large pore at dorsal end of lateral row of spinules. Genital field not clearly observed because of mounting, but in lateral view seems very similar to that in C. busanensis . Fourth urosomite (Fig. 12G View Figure 12 ) as in C. busanensis , except with one additional pair of dorsal pores in anterior half. Fifth urosomite (Fig. 12G View Figure 12 ) and sixth urosomite (Fig. 12H View Figure 12 ) as in C. busanensis .
Caudal rami (Fig. 12A, H View Figure 12 ) cylindrical, ca. 1.3 × as long as wide, 1.2 × as long as anal somite, narrowly spaced on anal somite, parallel; ornamented as in C. busanensis ; most armature broken off; dorsal seta nearly 3 × as long as ramus; proximal lateral seta inserted at approximately midlength of ramus.
Antennula (Fig. 13B View Figure 13 ) 11-segmented, but all armature as in C. koreana ; armature formula 3.6.8.4.5.6.2.2.2.2.7+ae; sixth segment ca. 2.7 × as long as wide, nearly 0.9 × as long as subsequent five segments combined; tenth segment 1.5 × as long as wide.
Antenna and mandibula (Fig. 13C View Figure 13 ) shape, segmentation, armature, and ornamentation as in C. koreana .
Maxillula (Fig. 13D View Figure 13 ) also as in C. koreana , except endopod slightly slenderer.
Maxilla (Fig. 13E View Figure 13 ) with only two setae on second endopodal segment; everything else as in C. koreana .
Maxilliped (Fig. 13F View Figure 13 ) generally as in C. koreana , except first endopodal segment slightly slenderer, seta on fourth endopodal segment shorter, large setae on fifth endopodal segment stronger, and slender seta on fifth endopodal segment shorter.
Swimming legs (Fig. 13G-J View Figure 13 ) shape, segmentation, armature formula, and most ornamentation as in C. busanensis ; fourth leg (Fig. 13J View Figure 13 ) with three setae on endopod lanceolate as in C. koreana , five setae on third exopodal segment as in C. busanensis , but unlike these species with two parallel posterior rows of spinules on intercoxal sclerite and with posterior row of spinules on basis; third endopodal segment of fourth leg 1.6 × as long as wide and third exopodal segment of fourth leg ca. 1.5 × as long as wide.
Fifth leg (Fig. 13K View Figure 13 ) shape, segmentation, and armature formula as in C. busanensis , but first segment without inner spinules and second segment slightly longer (1.5 × as long as first segment and 1.9 × as long as wide); lateral spine ca. 1.3 × as long as second segment and nearly 1.8 × as long as medial spine.
Sixth leg (Fig. 12F View Figure 12 ) as in C. busanensis .
Male unknown.
Variability.
Only two females were examined, both partly damaged, one in detail with a light microscope (holotype), and the other with a scanning electron microscope (paratype), so variability could not be properly assessed. However, the paratype female was also beforehand examined with a light microscope (although without dissection) and no variability was observed in the most important diagnostic characters (caudal rami length, antennula segmentation, swimming legs armature, or fifth leg proportions); mouth appendages could not be examined without dissection.
No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.
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