Korealona karanovici Jeong & Sinev & Brancelj & Chang & Kotov 2017, sp. nov.
Creators: name: Jeong, Hyun Gi
name: Sinev, Artem Y.
name: Brancelj, Anton
name: Chang, Kwang-Hyeon
name: Kotov, Alexey A.
Publisher: name: Zenodo
Year: 2017
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Malacostraca
Bathynellacea
Bathynellidae
Korealona
Korealona karanovici

description: Korealona karanovici sp. nov.
(FIGS 3–7)
Etymology. THIS SPEcIES IS DEDIcATED TO DR. TOMISLAV KARANOVIc, RENOWNED SPEcIALIST FOR THE GROUNDWATER cOPEPODS, WHO cOLLEcTED THE TYPE SERIES OF THE SPEcIES.
Type locality. A SANDbANK (38.06486ºN, 128.17693ºE) ON THE RIVERSIDE OF SOYANGGANG (GANG = RIVER) NEAR TOWN OF INJE, GANGWON-DO, SOUTH KOREA (LOcALITY 1 IN FIG. 1). THE TYPE SERIES WAS cOLLEcTED ON 0 9.2011 bY T. KARANOVIc. ENVIRONMENTAL PARAMETERS WERE NOT MEASURED.
Type material. Holotype. A PARTHENOGENETIc FEMALE, NIBR 0 0 0 0 307403.
Paratypes. A PARTHENOGENETIc FEMALE, NIBR 0 0 0 0 740011. TWO PARTHENOGENETIc FEMALES, MGU ML159. THREE PARTHENOGENETIc FEMALES, AAK M-2104.
Additional material (expressly excluded from the type series according to case 72.4.6. of ICZN 2000). FOUR ADULT FEMALES AND ONE JUVENILE FEMALE FROM A SANDbANK OF THE SEO-cHEON STREAM NEAR YEONG-JU BRIDGE (36.8329°N, 128.61425°E), TOWN YEONGJU-SI, GYEONGSANGbUK-DO, cOLLEcTED ON 19.11.2014 bY A. BRANcELJ; ABR, NO NUMbER (LOcALITY 2 IN FIG. 1). SIX MALES (ONE cOMPLETELY DISSEcTED); 11 FEMALES AND 2 EXUVIA FROM A SANDbANK OF THE SEO-cHEON STREAM NEAR SEO-CHEON BRIDGE (bELOW DAM) (36.8341°N, 128.61549°E), TOWN OF YEONGJU-SI, GYEONGSANGbUK-DO, cOLLEcTED ON 19.11.2014 bY A. BRANcELJ; ABR, NO NUMbER (LOcALITY 3 IN FIG. 1). ENVIRONMENTAL PARAMETERS WERE NOT MEASURED.
Description. Parthenogenetic female. IN LATERAL VIEW, bODY OF LARGE (FIG. 3A; 4A, B) AND SMALL (FIG. 3B) ADULT REcTANGULAR-OVOID, RELATIVELY LOW (HEIGHT/LENGTH AbOUT 0.60–0.65 IN bOTH ADULTS AND JUVENILES); MAXIMUM HEIGHT IN MIDDLE OR ANTERIORLY TO MIDDLE. NO DORSAL KEEL ON bOTH HEAD AND cARAPAcE; bODY MODERATELY TO STRONGLY cOMPRESSED LATERALLY; ON VENTRAL SIDE OF bODY VALVES WELL cLOSED, HAVING ONLY A VERY NARROW GAP ANTERIOR TO MIDDLE (FIG. 3C). DORSAL MARGIN UNIFORMLY cURVED; POSTERO-DORSAL ANGLE bROADLY ROUNDED, POSTERO-VENTRAL ANGLE ALSO bROADLY ROUNDED; VENTRAL MARGIN SLIGHTLY cONcAVE IN MIDDLE (FIG. 3A, B).
Head SMALL; ROSTRUM (FIG. 4D, E) LONG, WITH A ROUNDED TIP (FIG. 4D); cOMPOUND EYE AND OcELLUS AbSENT (FIG. 3A, B, D). HEAD SHIELD WITH THREE cLOSE MAJOR HEAD PORES OF EQUAL SIZE, WITH A NARROW cONNEcTION bETWEEN THEM (FIG. 3E, 4F); POST-PORE DISTANcE EQUAL TO INTER-PORE DISTANcE. LATERAL HEAD PORES LOcATED AT AbOUT 0.3 INTER-PORE DISTANcE FROM MIDLINE, AT LEVEL OF MID-DISTANcE bETWEEN MIDDLE AND POSTERIOR MAJOR PORE. LAbRUM WITH A bROAD, REGULARLY cONVEX LAbRAL KEEL; APEX bLUNT, WITH NO ADDITIONAL ELEMENTS ON FREE MARGIN OF KEEL (FIG. 3F). VENTRAL MARGIN OF VALVES WITH SETAE OF DIFFERENT SIZE IN DIFFERENT REGIONS OF THE MARGIN: LONGEST SETAE PRESENT IN ANTERIOR THIRD AND POSTERIOR THIRD OF THEIR ROW, WHILE IN cENTRAL THIRD THEY ARE SHORTER (FIG. 3A); SUcH DIFFERENcE IN SIZE LESS EXPRESSED IN JUVENILES (FIG. 3B); NO SETULAE bETWEEN MARGINAL SETAE (FIG. 3G, H, 4G). POSTERIORMOST SETAE WITH LONGER SETULAE. A ROW OF SETULAE AT POSTERIOR VALVE MARGIN (FIG. 3H); THEY ARE ALTERNATING IN LENGTH (FIG. 4H).
Postabdomen OF MODERATE LENGTH, TAPERING DISTALLY, LENGTH / WIDTH RATIO AbOUT 2.4–2.8 (FIG. 3I –K, 5A–C). VENTRAL MARGIN SMOOTHLY cURVED, S-SHAPED, WITHOUT RIDGES OR SETULAE. PREANAL ANGLE WELL-EXPRESSED, POSTANAL ANGLE ILL-DEFINED; DISTAL ANGLE AND DISTAL MARGIN NOT EXPRESSED. PREANAL MARGIN LONG; ANAL MARGIN AbOUT TWO TIMES SHORTER THAN THE FORMER; POSTANAL MARGIN ONLY SLIGHTLY LONGER THAN ANAL MARGIN. POSTANAL MARGIN DISTALLY WITH 3–5 SINGLE TEETH FOLLOWED WITH cLUSTERS OF DENTIcLES PROXIMALLY; ROW OF cLUSTERS OF DENTIcLES cONTINUE ON PROXIMAL PORTION OF POSTANAL MARGIN; ANAL MARGIN WITH FAScIcLES OF SETULAE. ADDITIONAL ROW OF 8–10 FAScIcLES OF RELATIVELY LONG SETULAE (WITH LENGTH AS IN LONGEST POSTANAL TOOTH) LATERALLY. POSTAbDOMINAL cLAW (FIG. 3L, M; 5D, E) SLIGHTLY cURVED; AS LONG AS POSTANAL PORTION OF POSTAbDOMEN; WITH FINE SETULAE ALONG VENTRAL MARGIN. BASAL SPINE AbOUT 0.37–0.43 cLAW LENGTH; A bUNcH OF THREE LONG SETULAE AT cLAW bASE. POSTAbDOMINAL SETAE SOMEWHAT LONGER THAN PREANAL MARGIN (FIG. 3I).
Antenna I (FIG. 3N, O) NOT REAcHING TIP OF ROSTRUM (FIG. 3D); WITH A SMOOTH SURFAcE AND NO ADDITIONAL ELEMENTS. ANTENNULAR SENSORY SETA LONG AND SLENDER; INSERTED IN MIDDLE OF ANTENNA I; PROJEcTING WELL bEYOND TIP. NINE TERMINAL AESTHETAScS, TWO OF THEM MARKEDLY LONGER THAN OTHERS.
Antenna II SHORT (FIG. 3D, 5F–H); ANTENNAL FORMULA: SETAE 0–0–3/1–1–3; SPINES 1–0–1/0–0–1. SIZE OF SETAE ON PROXIMAL AND NEXT SEGMENT OF ENDOPOD AS THAT OF APIcAL SETAE. SPINE ON FIRST EXOPOD SEGMENT RObUST (FIG. 5F, H); ITS LENGTH AbOUT 0.25 OF SEcOND SEGMENT LENGTH. SPINES ON APIcAL SEGMENTS OF EXOPOD AND ENDOPOD SOMEWHAT SHORTER THAN SEGMENTS bEARING THEM.
Limb I (FIG. 6A–C) WITH A RELATIVELY SHORT AccESSORY SETA (FIG. 6B: AcS); OUTER DISTAL LObE (FIG. 6A: ODL, FIG. 6C) SMALL, WITH LONG SINGLE bISEGMENTED SETA WITH UNILATERALLY SETULATED DISTAL HALF PLUS A RUDIMENTARY LATERAL SETA. INNER DISTAL LObE (FIG. 6A: IDL, C) WITH TWO bI-SEGMENTED SETAE EQUAL IN LENGTH. LIMb cORM SUb-REcTANGULAR IN LATERAL VIEW. ENDITE 4 (FIG. 6B: E4) WITH THREE POSTERIOR SETAE SUb-EQUAL IN LENGTH (FIG. 6A, B: A–c), AND A SINGLE ANTERIOR SETA (1). ENDITE 3 (E3) WITH THREE bI-SEGMENTED SETAE (D–F); TWO LONGER ONES (E–F), SUb-EQUAL IN LENGTH; WITH UNI-LATERAL ROW OF FINE SETULAE DISTALLY; THIRD SETA (D) SHORT; ANTERIOR SETA 2 VERY SMALL. ENDITE 2 (FIG. 6B: E2) WITH TWO POSTERIOR SETAE (G, H) AND A SHORT ANTERIOR SETA 1. BUNcHES OF LONG AND RObUST SETULAE AT VENTRAL MARGIN OF LIMb. TWO SERRATE EJEcTOR HOOKS (FIG. 6B: EJH) OF SIMILAR SIZE. SMALL PROJEcTION WITH A SINGLE SETA ON LIMb bASALMOST PORTION REPRESENTS MAXILLAR PROcESS = REMAIN OF GNATHObASE I (FIG. 6B: MXP=E1).
Limb II (FIG. 6D) WITH A SMALL EXOPODITE bEARING A SMALL SETA; INNER PORTION OF LIMb WITH EIGHT ScRAPERS (FIG. 6D: 1–8); ScRAPERS 3 AND 5 LONGER THAN OTHERS; SENSILLUM NEAR bASE OF SETA 1; VERY LOW HILLOcKS NEAR bASE OF ScRAPERS 2 AND 5. DISTAL ARMATURE OF GNATHObASE WITH FOUR ELEMENTS (FIG. 6D: DAG 1–4); ONE OF THEM AS A MINUTE SENSILLUM (FIG. 6D: DAG 1). FILTER PLATE WITH SIX SETAE SUb-EQUAL IN SIZE (FIG. 6D: FPL).
Limb III (FIG. 6E) WITH EXOPODITE REcTANGULAR bEARING TWO LATERAL SETAE (FIG. 6E: EXT 6,7), AND FIVE DISTAL SETAE (EXT 1–5); SETA 5 LONGEST; SETA 3 VERY SHORT. DISTAL ENDITE SUb-REcTANGULAR, WITH THREE ANTERIOR SETAE (FIG. 6E: 1–3); SETAE 1 AND 2 STOUT, PROXIMALMOST SETA 3 WITH LONG SETULAE DISTALLY. ON PROXIMAL ENDITE, FOUR ANTERIOR SETAE (4–7) AND FOUR SOFT POSTERIOR SETAE (FIG. 6E: A–D) NAKED, INcREASING IN SIZE PROXIMALLY. DISTAL MARGIN OF GNATHObASE WITH FOUR ELEMENTS; FILTER PLATE WITH SIX SETAE.
Limb IV (FIG. 6F) WITH A SMALL PRE-EPIPODITE AND A SMALL EPIPODITE; EXOPODITE SUb-QUADRANGULAR, WITH TWO LATERAL SETAE (FIG. 6F: EXT 5, 6) AND FOUR DISTAL SETAE (EXT 1–4); SETA 4 LONGEST. INNER LIMb PORTION WITH FOUR MARGINAL SETAE (FIG. 6F: 1–4). DISTALMOST SETA (1) LONG, STOUT, NAKED; SETAE 2–4 WITH INFLATED PROXIMAL PART; WITH SLENDER, UNILATERALLY SETULATED DISTAL PART. POSTERIOR SURFAcE WITH THREE THIN, SOFT SETAE (A–c) INcREASING IN LENGTH PROXIMALLY. DISTAL ARMATURE OF GNATHObASE WITH A LARGE SENSILLUM (FIG. 6F: DAG), A LONG SETA AND TWO SHORT SETAE. FILTER PLATE WITH FOUR SETAE (FIG. 6F: FPL).
Limb V (FIG. 6G) WITH A SMALL PRE-EPIPODITE AND A SMALL OVOID EPIPODITE; EXOPODITE SUbOVOID, WITH A SINGLE DISTAL (FIG. 6G: EXT 1) AND THREE LATERAL (FIG. 6G: EXT 2–4) SETAE. INNER LIMb PORTION AS A FLAP WITH SETULATED DISTAL AND INNER MARGIN; TWO SETULATED SETAE OF DIFFERENT LENGTH (FIG. 6G: 1–2); SETA 1 PAINTbRUSH-LIKE, DIREcTED DISTALLY, SETA 2 WITH SHORT SETULATION, PROTRUDING PROXIMALLY. FILTER PLATE AbSENT.
Juvenile female, ephippial female. NOT FOUND.
Male. BODY MORE ELONGATED THAN IN FEMALE (HEIGHT/LENGTH = 0.6–0.7); POSTERO-DORSAL AND POSTERO-VENTRAL ANGLE EXPRESSED bUT ROUNDED (FIG. 7A). HEAD LARGER THAN IN FEMALE; ROSTRUM SHORTER AND MORE ROUNDED AS cOMPARED WITH FEMALE. LAbRAL KEEL WITH MORE ROUNDED APEX (FIG. 7B, C). VALVE WITH A bUNcH OF SETAE AT ANTERO-VENTRAL ANGLE, FOLLOWED bY A MARGINAL ROW OF RELATIVELY LONG SETAE; FINE SETULAE AT POSTERIOR MARGIN SUbMARGINALLY (FIG. 7D). POSTAbDOMEN RELATIVELY SHORT; DISTAL PORTION cLEARLY SHORTER THAN IN FEMALE; GONOPORES OPEN DORSALLY NEAR bASE OF POSTAbDOMINAL cLAW (FIG. 7E). PREANAL ANGLE PROJEcTED; POSTANAL ANGLE ROUNDED; DORSO-DISTAL ANGLE AbSENT. ANAL MARGIN SHORT, POSTANAL MARGIN AbOUT TWO TIMES LONGER THAN PREANAL MARGIN. NO MARGINAL TEETH IN POSTANAL PORTION; SERIES OF LATERAL DENTIcLES; DISTALMOST DENTIcLE VERY LARGE. POSTAbDOMINAL cLAW AS IN FEMALE, WITH A SINGLE SETULE NEAR bASAL SPINE.
Antenna I RELATIVELY LONG, WITH NINE SHORT TERMINAL AESTHETAScS, AND A SMALL SENSORY SETA IN MIDDLE (FIG. 7F), MALE SETA NOT FOUND.
Trunk limb I WITH OUTER DISTAL LObE AS IN FEMALE, INNER DISTAL LObE WITH A STRONG, U-SHAPED cOPULATORY HOOK AND TWO SETAE, AS IN FEMALE (FIG. 7H).
Limb II: ScRAPER 3 WITH SIZE AS IN ScRAPERS 1–2 (FIG. 7I).
Size. ADULT PARTHENOGENETIc FEMALES 0.25–0.36 MM (SOYANGGANG), 0.28–0.32 (NEAR SEO-CHEON BRIDGE), 0.28– 0.33 MM (NEAR YEONG-JU BRIDGE); ADULT MALES 0.22–0.26 MM (NEAR SEO-CHEON BRIDGE).
Distribution. THE SPEcIES WAS FOUND IN GANGWON-DO AND NORTHERNMOST PORTION OF GYEONGSANGbUK-DO PROVINcES OF SOUTH KOREA.
description: Published as part of Jeong, Hyun Gi, Sinev, Artem Y., Brancelj, Anton, Chang, Kwang-Hyeon & Kotov, Alexey A., 2017, A new blind groundwater-dwelling genus of the Cladocera (Crustacea: Branchiopoda) from the Korean Peninsula, pp. 451-474 in Zootaxa 4341 (4) on pages 456-462, DOI: 10.11646/zootaxa.4341.4.1, http://zenodo.org/record/1040495