Korealona karanovici, Jeong & Sinev & Brancelj & Chang & Kotov, 2017

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, Zootaxa 4341 (4), pp. 451-474 : 456-462

publication ID	https://doi.org/ 10.11646/zootaxa.4341.4.1
publication LSID	lsid:zoobank.org:pub:BEB2E2B5-5FF9-4EF0-913A-C0C507F258DF
DOI	https://doi.org/10.5281/zenodo.6024580
persistent identifier	https://treatment.plazi.org/id/039C87CC-FFE9-E227-42A5-DFE1FE72FA7E
treatment provided by	Plazi
scientific name	Korealona karanovici
status	sp. nov.

Treatment

Korealona karanovici sp. nov.

( FIGS 3–7 View FIGURE 3 View FIGURE 4 View FIGURE 5 View FIGURE 6 View FIGURE 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 View FIGURE 1 ). THE TYPE SERIES WAS cOLLEcTED ON 0 9.2011 bY T. KARANOVIc. ENVIRONMENTAL PARAMETERS WERE NOT MEASURED GoogleMaps .

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 GoogleMaps ; ABR, NO NUMbER (LOcALITY 2 IN FIG. 1 View FIGURE 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 GoogleMaps ; ABR, NO NUMbER (LOcALITY 3 IN FIG. 1 View FIGURE 1 ). ENVIRONMENTAL PARAMETERS WERE NOT MEASURED.

Description. Parthenogenetic female. IN LATERAL VIEW, bODY OF LARGE ( FIG. 3A View FIGURE 3 ; 4A, B) AND SMALL ( FIG. 3B View FIGURE 3 ) 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 View FIGURE 3 ). DORSAL MARGIN UNIFORMLY cURVED; POSTERO-DORSAL ANGLE bROADLY ROUNDED, POSTERO-VENTRAL ANGLE ALSO bROADLY ROUNDED; VENTRAL MARGIN SLIGHTLY cONcAVE IN MIDDLE ( FIG. 3A, B View FIGURE 3 ).

Head SMALL; ROSTRUM ( FIG. 4D, E View FIGURE 4 ) LONG, WITH A ROUNDED TIP ( FIG. 4D View FIGURE 4 ); cOMPOUND EYE AND OcELLUS AbSENT ( FIG. 3A, B, D View FIGURE 3 ). HEAD SHIELD WITH THREE cLOSE MAJOR HEAD PORES OF EQUAL SIZE, WITH A NARROW cONNEcTION bETWEEN THEM ( FIG. 3E View FIGURE 3 , 4F View FIGURE 4 ); 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 View FIGURE 3 ). 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 View FIGURE 3 ); SUcH DIFFERENcE IN SIZE LESS EXPRESSED IN JUVENILES ( FIG. 3B View FIGURE 3 ); NO SETULAE bETWEEN MARGINAL SETAE ( FIG. 3G, H View FIGURE 3 , 4G View FIGURE 4 ). POSTERIORMOST SETAE WITH LONGER SETULAE. A ROW OF SETULAE AT POSTERIOR VALVE MARGIN ( FIG. 3H View FIGURE 3 ); THEY ARE ALTERNATING IN LENGTH ( FIG. 4H View FIGURE 4 ).

Postabdomen OF MODERATE LENGTH, TAPERING DISTALLY, LENGTH / WIDTH RATIO AbOUT 2.4–2.8 ( FIG. 3I –K View FIGURE 3 , 5A–C View FIGURE 5 ). 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 View FIGURE 3 ; 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 View FIGURE 3 ) .

Antenna I ( FIG. 3N, O View FIGURE 3 ) NOT REAcHING TIP OF ROSTRUM ( FIG. 3D View FIGURE 3 ); 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 View FIGURE 3 , 5F–H View FIGURE 5 ); 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 View FIGURE 5 ); 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 View FIGURE 6 ) WITH A RELATIVELY SHORT AccESSORY SETA ( FIG. 6B View FIGURE 6 : AcS); OUTER DISTAL LObE ( FIG. 6A View FIGURE 6 : ODL, FIG. 6C View FIGURE 6 ) SMALL, WITH LONG SINGLE bISEGMENTED SETA WITH UNILATERALLY SETULATED DISTAL HALF PLUS A RUDIMENTARY LATERAL SETA. INNER DISTAL LObE ( FIG. 6A View FIGURE 6 : IDL, C) WITH TWO bI-SEGMENTED SETAE EQUAL IN LENGTH. LIMb cORM SUb-REcTANGULAR IN LATERAL VIEW. ENDITE 4 ( FIG. 6B View FIGURE 6 : E4) WITH THREE POSTERIOR SETAE SUb-EQUAL IN LENGTH ( FIG. 6A, B View FIGURE 6 : 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 View FIGURE 6 : 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 View FIGURE 6 : EJH) OF SIMILAR SIZE. SMALL PROJEcTION WITH A SINGLE SETA ON LIMb bASALMOST PORTION REPRESENTS MAXILLAR PROcESS = REMAIN OF GNATHObASE I ( FIG. 6B View FIGURE 6 : MXP=E1).

Limb II ( FIG. 6D View FIGURE 6 ) WITH A SMALL EXOPODITE bEARING A SMALL SETA; INNER PORTION OF LIMb WITH EIGHT ScRAPERS ( FIG. 6D View FIGURE 6 : 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 View FIGURE 6 : DAG 1–4); ONE OF THEM AS A MINUTE SENSILLUM ( FIG. 6D View FIGURE 6 : DAG 1). FILTER PLATE WITH SIX SETAE SUb-EQUAL IN SIZE ( FIG. 6D View FIGURE 6 : FPL).

Limb III ( FIG. 6E View FIGURE 6 ) WITH EXOPODITE REcTANGULAR bEARING TWO LATERAL SETAE ( FIG. 6E View FIGURE 6 : 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 View FIGURE 6 : 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 View FIGURE 6 : A–D) NAKED, INcREASING IN SIZE PROXIMALLY. DISTAL MARGIN OF GNATHObASE WITH FOUR ELEMENTS; FILTER PLATE WITH SIX SETAE.

Limb IV ( FIG. 6F View FIGURE 6 ) WITH A SMALL PRE-EPIPODITE AND A SMALL EPIPODITE; EXOPODITE SUb-QUADRANGULAR, WITH TWO LATERAL SETAE ( FIG. 6F View FIGURE 6 : EXT 5, 6) AND FOUR DISTAL SETAE (EXT 1–4); SETA 4 LONGEST. INNER LIMb PORTION WITH FOUR MARGINAL SETAE ( FIG. 6F View FIGURE 6 : 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 View FIGURE 6 : DAG), A LONG SETA AND TWO SHORT SETAE. FILTER PLATE WITH FOUR SETAE ( FIG. 6F View FIGURE 6 : FPL).

Limb V ( FIG. 6G View FIGURE 6 ) WITH A SMALL PRE-EPIPODITE AND A SMALL OVOID EPIPODITE; EXOPODITE SUbOVOID, WITH A SINGLE DISTAL ( FIG. 6G View FIGURE 6 : EXT 1) AND THREE LATERAL ( FIG. 6G View FIGURE 6 : EXT 2–4) SETAE. INNER LIMb PORTION AS A FLAP WITH SETULATED DISTAL AND INNER MARGIN; TWO SETULATED SETAE OF DIFFERENT LENGTH ( FIG. 6G View FIGURE 6 : 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 View FIGURE 7 ). HEAD LARGER THAN IN FEMALE; ROSTRUM SHORTER AND MORE ROUNDED AS cOMPARED WITH FEMALE. LAbRAL KEEL WITH MORE ROUNDED APEX ( FIG. 7B, C View FIGURE 7 ). 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 View FIGURE 7 ). POSTAbDOMEN RELATIVELY SHORT; DISTAL PORTION cLEARLY SHORTER THAN IN FEMALE; GONOPORES OPEN DORSALLY NEAR bASE OF POSTAbDOMINAL cLAW ( FIG. 7E View FIGURE 7 ). 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 View FIGURE 7 ), 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 View FIGURE 7 ).

Limb II: ScRAPER 3 WITH SIZE AS IN ScRAPERS 1–2 ( FIG. 7I View FIGURE 7 ).

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.