Tanycypris eugenkempfi, Savatenalinton, 2017

Savatenalinton, Sukonthip, 2017, Species diversity of ostracods (Crustacea: Ostracoda) from rice fields in Northeast Thailand, with the description of a new Tanycypris species, Zootaxa 4362 (4), pp. 499-516 : 504-509

publication ID	https://doi.org/ 10.11646/zootaxa.4362.4.2
publication LSID	lsid:zoobank.org:pub:71D1AD7A-8F30-4AEF-9B7A-98FE0993E210
DOI	https://doi.org/10.5281/zenodo.6000017
persistent identifier	https://treatment.plazi.org/id/03DAED1E-7906-EA5A-2ACF-A433F534C1FE
treatment provided by	Plazi
scientific name	Tanycypris eugenkempfi
status	sp. nov.

Treatment

Tanycypris eugenkempfi n. sp.

( FIgS 2–5 View FIGURE 2 View FIGURE 3 View FIGURE 4 View FIGURE 5 )

Holotype. FEmaLE, SOfT PaRTS dISSEcTEd IN gLYcERINE ON a SEaLEd gLaSS SLIdE, aNd VaLVES STOREd dRY IN a mIcROPaLaEONTOLOgIcaL SLIdE (MSU-ZOC.230).

Paratypes. ONE dISSEcTEd fEmaLE (MSU-ZOC.231) STOREd LIkE THE HOLOTYPE, TWO UNdISSEcTEd fEmaLE caRaPacES (MSU-ZOC.232-233) STOREd dRY IN mIcROPaLaEONTOLOgIcaL SLIdES aNd TWO fEmaLES IN 70% ETOH (MSU-ZOC.234).

Repository. THE HOLOTYPE aNd aLL PaRaTYPES aRE dEPOSITEd IN THE NaTURaL HISTORY MUSEUm, MSU (MaHa SaRakHam, THaILaNd) .

Type locality. RIcE fIELd, MUaNg DISTRIcT, ROI-ET PROVINcE (LOcaLITY NUmbER 22). MaTERIaL cOLLEcTEd ON 23 OcTObER 2010 aNd 25 OcTObER 2014, cOORdINaTES: 16° 2.067΄ N aNd 103° 52.625΄ E. AccOmPaNYINg OSTRacOd faUNa: Pseudocypretta maculata KLIE, 1932 , Pseudostrandesia calapanensis (TRESSLER, 1937), Pseudostrandesia phetchabunensis SaVaTENaLINTON & MaRTENS, 2010 , Pseudostrandesia striatoreticulata ( KLIE, 1932) , Strandesia kraepelini ( G.W. MüLLER, 1906) aNd Strandesia SP.

Other localities. RIcE fIELd, MUaNg DISTRIcT, SISakET PROVINcE (LOcaLITY NUmbER 19). MaTERIaL cOLLEcTEd ON 5 OcTObER 2010, cOORdINaTES: 14° 59.473΄ N aNd 104° 22.945΄ E. AccOmPaNYINg OSTRacOd faUNa: Chrissia SP. , Cypretta SP. , Notodromas sinensis NEaLE & ZHaO, 1991 , Pseudocypretta maculata KLIE, 1932 , Pseudostrandesia phetchabunensis SaVaTENaLINTON & MaRTENS, 2010 , Pseudostrandesia striatoreticulata ( KLIE, 1932) aNd Strandesia kraepelini ( G.W. MüLLER, 1906)

Etymology. THE SPEcIES IS NamEd IN HONOUR Of PROf. DR. EUgEN K. KEmPf (COLOgNE, GERmaNY) fOR HIS PROmINENT EffORTS ON OSTRacOd cONTRIbUTIONS, ESPEcIaLLY THE KEmPf DaTabaSE OSTRacOda (KDO), THE mOST USEd INdEX Of OSTRacOd TaXONOmY. THIS INVaLUabLE daTabaSE HaS bEEN UPdaTEd aNd IS STILL IN USE. PROf. DR. EUgEN K. KEmPf WaS a fRIENdLY aNd gENEROUS ScIENTIST, aNd THIS SPEcIES IS dEdIcaTEd TO HIm.

Diagnosis. CaRaPacE IN LaTERaL VIEW ELLIPTIcaL, WITH EVENLY aRcHEd dORSaL maRgIN, gREaTEST HEIgHT SITUaTEd aT mId-LENgTH, VENTRaL maRgIN SLIgHTLY SINUOUS; LV OVERLaPPINg RV aNTERIORLY, VENTRaLLY aNd POSTERIORLY; caRaPacE IN dORSaL VIEW ELLIPTIcaL (WIdTH mORE THaN 1/3 Of LENgTH), WITH gREaTEST WIdTH SITUaTEd aT mId-LENgTH, aNTERIOR aNd POSTERIOR EXTREmITIES POINTEd. LV WITH gROOVE aLONg VaLVE maRgIN; caLcIfIEd INNER LamELLa bROad, WITHOUT INNER LIST. RV WITH bROad caLcIfIEd INNER LamELLa, WITHOUT INNER LIST. FIRST SEgmENT Of A1 WITH SUbaPIcaL dORSaL SETa. TWO LaRgE bRISTLES ON THIRd ENdITE Of MX 1 SmOOTH. T1 WITH TWO a-SETaE , ONE b-SETa, ONE d-SETa. LENgTH Of GP Of caUdaL RamUS c. 2/3 Of THaT Of Ga, CR aTTacHmENT STOUT, WITH TRIEbEL’S LOOP SITUaTEd aT mIddLE Of dISTaL PaRT Of maIN bRaNcH, db WELL dEVELOPEd, Vb SHORT, STOUT.

Differential diagnosis. Tanycypris eugenkempfi n. sp. dIffERS fROm OTHER Tanycypris SPEcIES IN SEVERaL aSPEcTS. THE dISTINcTIVE dIagNOSTIc fEaTURES aRE THE mORE TUmId caRaPacE IN dORSaL VIEW, aPPEaRINg RIcE SEEd SHaPEd, aNd THE dISTINcTLY aRcHEd dORSaL maRgIN Of THE caRaPacE IN LaTERaL VIEW.

Measurements (range and mean, in µm). LV (N = 2), L = 1066–1069 (1068), H = 508–509 (509); RV (N = 2), L = 1062–1066 (1064), H = 512–515 (514); caRaPacE (N = 2), L = 1114–1116 (1115), W = 422–424 (423).

Ecology. THE NEW SPEcIES IS ONLY kNOWN fROm TWO RIcE fIELdS. THE SPEcIES OccURS aT a PH RaNgE Of 7.19–7.85, a TEmPERaTURE RaNgE Of 24.5–29.7° C aNd a DO RaNgE Of 5.34–5.85 mg /L.

Description of female. CaRaPacE IN LaTERaL VIEW ( FIg 2A View FIGURE 2 ) ELLIPTIcaL, aNTERIORLY aNd POSTERIORLY maRgINS SUbEqUaLLY ROUNdEd, LV OVERLaPPINg RV, aNTERIORLY, VENTRaLLY aNd POSTERIORLY, dORSaL maRgIN EVENLY aRcHEd, gREaTEST HEIgHT SITUaTEd aT mId-LENgTH, VENTRaL maRgIN SLIgHTLY SINUaTEd, VaLVE SURfacE SOmEWHaT SmOOTH, WITH ScaTTERINg Of THIN SETaE ( FIg 2C View FIGURE 2 ).

CaRaPacE IN dORSaL VIEW ( FIg 2B View FIGURE 2 ) SUbELLIPTIcaL, WITH gREaTEST WIdTH SITUaTEd aT mId-LENgTH, LV OVERLaPPINg RV aNTERIORLY aNd POSTERIORLY, aNTERIOR aNd POSTERIOR ENdS POINTEd.

LV IN INTERIOR VIEW ( FIg 2E View FIGURE 2 ) WITH gROOVE aLONg VaLVE maRgIN, dORSaL maRgIN dISTINcTLY aRcHEd, gREaTEST HEIgHT SITUaTEd aT mId-LENgTH, SLOPINg dOWN TO aNTERIOR aNd POSTERIOR maRgINS, aNTERIOR aNd POSTERIOR maRgINS SUbEqUaLLY, WIdELY ROUNdEd, VENTRaL maRgIN SLIgHTLY SINUaTEd; caLcIfIEd INNER LamELLa RELaTIVELY WIdE aNTERIORLY aNd POSTERIORLY, WITHOUT INNER LIST.

RV IN INTERIOR VIEW ( FIg 2F View FIGURE 2 ) WITH maRgINaL SELVagE, caLcIfIEd INNER LamELLa RELaTIVELY WIdE aNTERIORLY aNd POSTERIORLY, WITHOUT INNER LIST.

A1 ( FIg 3A View FIGURE 3 ): fIRST SEgmENT WITH LaRgE, ELONgaTEd PROXImaL WOUTERS ORgaN, ONE SUbaPIcaL dORSaL SETa Of INTERmEdIaTE LENgTH (REacHINg TIP Of SEgmENT) aNd TWO LONg aPIcaL VENTRaL SETaE. SEcONd SEgmENT SLIgHTLY WIdER THaN LONg, WITH ONE SHORT aPIcaL dORSaL SETa (REacHINg TIP Of NEXT SEgmENT) aNd LONg ROmE ORgaN. THIRd SEgmENT bEaRINg TWO SUbEqUaLLY LONg SETaE (ONE aPIcaL dORSaL SETa, ONE aPIcaL VENTRaL SETa), REacHINg SLIgHTLY bEYONd TIP Of fOURTH SEgmENT. FOURTH SEgmENT WITH TWO LONg dORSaL SETaE aNd TWO SUbEqUaL, SHORTER VENTRaL SETaE (THE LONg ONE REacHINg TIP Of PENULTImaTE SEgmENT). FIfTH SEgmENT dORSaLLY WITH TWO LONg SETaE, VENTRaLLY WITH TWO (ONE LONg, ONE SHORTER) SETaE, SHORTER ONE REacHINg TIP Of TERmINaL SEgmENT. PENULTImaTE SEgmENT WITH fOUR LONg aNd ONE SHORT SETaE, SHORT ONE REacHINg TIP Of TERmINaL SEgmENT. TERmINaL SEgmENT WITH THREE (TWO LONg, ONE SHORT) aPIcaL SETaE aNd aESTHETaSc Ya, THE LaTTER c. 1.8 TImES THE LENgTH Of SHORT aPIcaL SETa.

A2 ( FIg 3B View FIGURE 3 ): EXOPOd WITH THREE (ONE LONg, TWO SHORT) SETaE, LONg ONE REacHINg bEYONd HaLf Of fIRST ENdOPOdaL SEgmENT. FIRST ENdOPOdaL SEgmENT WITH fIVE LONg (REacHINg bEYONd TIP Of TERmINaL cLaWS) aNd ONE SHORT NaTaTORY SETaE, LENgTH Of SHORTEST SETa NOT REacHINg HaLf Of PENULTImaTE SEgmENT (LENgTH c. 1/3 Of THaT Of PENULTImaTE SEgmENT), aESTHETaSc Y LONg, aPIcaL VENTRaL SETa LONg, REacHINg TIP Of PENULTImaTE SEgmENT. PENULTImaTE SEgmENT UNdIVIdEd, dISTaLLY WITH THREE SERRaTEd cLaWS, aESTHETaSc Y2 LONg (aLmOST REacHINg TIP Of TERmINaL SEgmENT), z1–z3 SETaE LONg; THIS SEgmENT mEdIaLLY WITH TWO (ONE LONg, ONE SHORTER) dORSaL SETaE (LENgTH Of SHORT ONE c. 2/3 Of THaT Of LONg ONE) aNd fOUR VENTRaL SETaE Of UNEqUaL LENgTH (T1–T4). TERmINaL SEgmENT WITH TWO SERRaTEd cLaWS (GM aNd Gm), g-SETa aNd aESTHETaSc Y3, LENgTH Of Gm c. 3/4 Of THaT Of GM, g-SETa LONg, LENgTH c. 1.3 TImES THaT Of aESTHETaSc Y3, LENgTH Of aESTHETaSc Y3 c. 2/3 Of THaT Of accOmPaNYINg SETa.

Md-PaLP ( FIg 4A–B View FIGURE 4 ): fIRST SEgmENT WITH TWO LaRgE SETaE (S1 aNd S2), ONE SLENdER, LONg SETa aNd LONg α-SETa, THE LaTTER SmOOTH WITH LONg POINTEd TIP. SEcONd SEgmENT dORSaLLY WITH THREE UNEqUaL LONg aPIcaL SETaE, LENgTH Of SHORTEST c. 1/3 Of THaT Of LONgEST; VENTRaLLY WITH a gROUP Of THREE LONg HIRSUTE SETaE, ONE SHORTER HIRSUTE SETa aNd β- SETa, THE LaTTER PLUmOSE, cONE-SHaPEd aNd WITH POINTEd TIP. PENULTImaTE SEgmENT cONSISTINg Of THREE gROUPS Of SETaE: dORSaLLY WITH a gROUP Of fOUR UNEqUaL, LONg, SUbaPIcaL SETaE; LaTERaLLY WITH aPIcaL γ-SETa aNd THREE fURTHER SmOOTH aPIcaL SETaE, γ-SETa STOUT, HIRSUTE, LONg (LENgTH c. 2.4 TImES Of THaT Of TERmINaL SEgmENT); VENTRaLLY WITH TWO (ONE LONg, ONE SHORT) aPIcaL SETaE, SHORT ONE REacHINg mId LENgTH Of TERmINaL SEgmENT. TERmINaL SEgmENT bEaRINg THREE cLaWS aNd TWO SETaE.

MX 1 ( FIg 4D View FIGURE 4 ) WITH TWO-SEgmENTEd PaLP , THREE ENdITES aNd a LaRgE bRaNcHIaL PLaTE; baSaL SEgmENT Of PaLP WITH gROUP Of fIVE LONg, UNEqUaL aPIcaL SETaE aNd TWO (ONE LONg, ONE SHORTER) SUbaPIcaL SETaE, SHORTER ONE REacHINg mId LENgTH Of TERmINaL SEgmENT, TERmINaL SEgmENT ELONgaTEd, aPIcaLLY WITH THREE cLaWS aNd THREE SETaE. TWO LaRgE bRISTLES ON THIRd ENdITE SmOOTH. SIdEWaYS-dIREcTEd bRISTLES ON fIRST ENdITE UNEqUaLLY LONg, LENgTH Of SHORT ONE c. 2/3 Of THaT Of LONg ONE .

T1 ( FIg 4E–F View FIGURE 4 ) PROTOPOd WITH TWO SHORT a-SETaE, LONg b (c. THREE TImES THE LENgTH Of a-SETaE) aNd d-SETaE (c. TWO TImES THE LENgTH Of a-SETaE), dISTaLLY WITH 14 (10 aPIcaL, fOUR SUbaPIcaL) HIRSUTE SETaE Of UNEqUaL LENgTH. ENdOPOd WEakLY bUILT PaLP WITH THREE UNEqUaL aPIcaL SETaE.

T2 ( FIg 5A View FIGURE 5 ) 5-SEgmENTEd. PROTOPOd WITH SETa d1 c. 1.6 TImES THaT Of SETa d2. FIRST ENdOPOd SEgmENT WITH LONg E-SETa (LENgTH c. 2/3 Of THaT Of PENULTImaTE SEgmENT). SEcONd ENdOPOd SEgmENT bEaRINg LONg f-SETa (REacHINg faR bEYONd TIP Of TERmINaL SEgmENT). THIRd ENdOPOd SEgmENT WITH a PaIR Of aPIcaL SETaE (LONg g-SETa aNd ONE SHORT SETa), SHORT ONE aLmOST HaLf Of g-SETa. TERmINaL SEgmENT WITH TWO (ONE dORSaLLY, ONE VENTRaLLY) LONg aPIcaL H1 aNd H3 SETaE aNd a SERRaTEd cLaW (H2).

T3 ( FIg 5B View FIGURE 5 ) cLEaNINg LImb. FIRST SEgmENT WITH LONg d1, d2, dP SETaE. SEcONd SEgmENT WITH LONg aPIcaL E-SETa (SLIgHTLY bEYONd HaLf-WaY Of NEXT SEgmENT). THIRd SEgmENT WITH mEdIaLLY LONg f-SETa (REacHINg TIP Of SEgmENT). TERmINaL SEgmENT WITH aPIcaL PINcER (H2), ONE SHORT H1 SETa aNd ONE REfLEXEd SUbaPIcaL H3 SETa, LENgTH Of THE LaTTER c. 3/4 Of THaT Of THIRd SEgmENT.

CaUdaL RamUS ( FIg 5C View FIGURE 5 ) WELL-dEVELOPEd, WITH VENTRaL maRgIN STRONgLY SERRaTEd, bEaRINg c. SEVEN gROUPS Of SETULaE, Ga aNd GP cLaWS LONg, SERRaTEd, LENgTH Of Ga c. 1/3 THaT Of RamUS, LENgTH Of GP c. 2/3 THaT Of Ga. Sa SETa SLIm, LONg (SLIgHTLY SHORTER THaN Ga), SLIgHTLY HIRSUTE, SP SETa RObUST, SHORT (REacHINg ENd Of RamUS), WITH NEEdLE-LIkE TIP.

CaUdaL RamUS aTTacHmENT ( FIg 5D View FIGURE 5 ) STOUT, WITH TRIEbEL’S LOOP SITUaTEd aT mIddLE Of dISTaL PaRT Of maIN bRaNcH, db WELL dEVELOPEd, Vb SHORT (kNOb-LIkE), STOUT.

MaLE UNkNOWN.