Trevathana longidonta, Chan & Chen & Achituv & Lin, 2017

Chan, Benny Kwok Kan, Chen, Yi-Yang, Achituv, Yair & Lin, Hsiu-Chin, 2017, Description of five new coral associated Barnacles of the genus Trevathana (Balanomorpha: Pyrgomatidae) in Pacific Waters, Zootaxa 4363 (2), pp. 151-202 : 177-187

publication ID	https://doi.org/ 10.11646/zootaxa.4363.2.1
publication LSID	lsid:zoobank.org:pub:6E8B2053-10EC-49EA-8374-D835EACCE01D
DOI	https://doi.org/10.5281/zenodo.6018188
persistent identifier	https://treatment.plazi.org/id/5811F4F9-C0F4-4506-B115-9472E746F279
taxon LSID	lsid:zoobank.org:act:5811F4F9-C0F4-4506-B115-9472E746F279
treatment provided by	Plazi
scientific name	Trevathana longidonta
status	sp. nov.

Treatment

Trevathana longidonta sp. nov.

HTTP://zOOBANK.ORG/URN:LSID:zOOBANK.ORG:AcT:5811F4F9-C0F4-4506-B115-9472E746F279 FIGUReS 2G H View FIGURE 2 ; 23–30

Trevathana sp. nov. 3. Chan et al., 2013: 338, figs. 299–307.

Material examined. HOLOTyPe: ASIZCR000359, LOBSTeR CAVe, SIAO-LIU-QIAO ISLAND, TAIWAN (22o20.41’N, 120o23.18’E, DePTH 10M), AUGUST 2010, cOLL. B.K.K. CHAN, ON cORAL Favites abdita ( ELLIS & SOLANDeR, 1786). PARATyPeS: ASIZCR000360, DONGSHA ATOLL (20°41.478 N, 116°45.103 E), TAIWAN, MAy 2014, cOLL. P.C. TSAI. ON cORAL Favites abdita . ASIZCR000361, DATA SAMe AS ASIZCR000360. ASIZCR000227, DATA SAMe AS ASIZCR000359. OTHeR MATeRIALS: CEL-GI-172-1, GeNeRAL ROcK, GReeN ISLAND, TAIWAN, AUGUST 2010, cOLL. B.K.K. CHAN, ON FAVIIDAe (cORAL SPecIMeN TOO fRAGMeNTeD TO IDeNTIfy). CEL-TI- 11-1, TURTLe TAIL, KUeI SHAN ISLAND, TAIWAN, OcTOBeR 2010, cOLL. B.K.K. CHAN, ON cORAL Pavona venosa (EHReNBeRG, 1834), CEL-TI- 11-3, CEL-TI- 11-4 AND CEL-TI- 11-5, DATA SAMe AS CEL-TI- 11-1. CEL-KT-85-1, NANWAN, KeNTING, PINGTUNG COUNTy, TAIWAN, NOVeMBeR 2010, cOLL. B.K.K. CHAN, ON cORAL Favites abdita . CEL-DSA-6-1, DONGSHA ATOLL (20°41.478 N, 116°45.103 E), MAy 2014, cOLL. H.N. CHeN, P.C. TSAI, H.C. LIN, ON cORAL Favites abdita . CEL-DSA-54-5 DATA SAMe AS CEL-DSA-6-1.

Diagnosis. ScUTAL WIDTH 4 TIMeS LONGeR THAN HeIGHT. OccLUDeNT MARGIN SLIGHTLy cURVeD. MeDIAN cLOSeD fURROW STRAIGHT, ABOUT 7/8 LeNGTH Of ScUTUM. ARTIcULAR MARGIN Of ScUTUM WITH INTeRLOcKING TOOTH, TOOTH NARROW, WIDTH ABOUT 1/2 Of ARTIcULAR MARGIN. ADDUcTOR PLATe ABSeNT. TeRGUM TRIANGULAR, BASAL MARGIN LONGeR THAN ScUTAL AND OccULDeNT MARGINS. INTeRNALLy, BASe Of TeRGUM WITH LONG, ROD-SHAPeD TOOTH, TOOTH eXTeNDING BeyOND cARINAL MARGIN. SPUR INDISTINcT.

Description. SHeLL OVAL, cOVeReD By cORAL WHeN ALIVe ( FIG. 2G, H View FIGURE 2 ). SHeLL (7.6 MM BD HOLOTyPe), fLAT, eLLIPTIcAL, PLATeS fUSeD, WHITe (AfTeR cLeANING AND PReSeRVATION), WITH SMALL PROjecTIONS ROUGHLy ARRANGeD ON SURfAce ( FIG. 23A View FIGURE 23 ). CIRcUMfeReNce Of BASe Of SHeLL WITH 37 SHORT PROjecTIONS, PROjecTIONS MARGIN SeRRATeD ( FIG. 23B View FIGURE 23 ). ORIfIce eLLIPTIcAL, ROSTRO-cARINAL AXIS ABOUT 1/3 Of BASAL ROSTRO-cARINAL DIAMeTeR Of SHeLL. ScUTUM AND TeRGUM WHITe, SePARATeD ( FIG. 23C–G View FIGURE 23 ). ScUTUM TRANSVeRSALLy eLONGATeD, TeRGAL MARGIN 4 TIMeS LONGeR THAN OccLUDeNT MARGIN. OccLUDeNT MARGIN SLIGHTLy cURVeD, eXTeRNAL SURfAce Of ScUTUM WITH STRAIGHT MeDIAN fURROW cLOSeD, ABOUT 7/8 TOTAL LeNGTH Of ScUTUM. ARTIcULAR MARGIN WITH NARROW, SeMIcIRcULAR, INTeRLOcKING TOOTH, WIDTH Of TOOTH ABOUT 1/2 Of ARTIcULAR MARGIN, GROWTH LINeS ON TOOTH ( FIG. 23G View FIGURE 23 ). ADDUcTOR PLATe ABSeNT ( FIG. 23C View FIGURE 23 ). TeRGUM TRIANGULAR ( FIG. 23E, F View FIGURE 23 ), WITH BASAL MARGIN SHORTeR THAN cARINAL AND ScUTAL MARGINS, SPUR LOW, ScUTAL MARGIN SLIGHTLy cONcAVe, NOTcHeD; INNeR SIDe Of ScUTAL MARGIN WITH SeMIcIRcULAR DePReSSION AccOMMODATING INTeRLOcKING TOOTH Of ScUTUM ( FIG. 23F View FIGURE 23 ). INTeRNAL SURfAce Of TeRGUM WITH POINTeD, INWARD PROjecTING TOOTH LOcATeD ON SPUR ( FIG. 23F View FIGURE 23 ), TOOTH eXTeNDING BeyOND cARINAL MARGIN.

MAXILLA SUBTRIANGULAR, BILOBeD ( FIG. 24A View FIGURE 24 ), WITH SIMPLe SeTAe DISTALLy ( FIG. 24B View FIGURE 24 ),SeRRULATe SeTAe ON INTeRIOR MARGIN ( FIG. 24C View FIGURE 24 ). MAXILLULe WITH cUTTING eDGe STRAIGHT, WITHOUT NOTcH, BeARING ROW Of 11 OR 12 SPINeS (cOUNTS fROM 4 SPecIMeNS, FIG. 24D, F–H View FIGURE 24 ). UPPeR AND LOWeR MARGINS WITH LONG, SIMPLe SeTAe. ( FIG. 24E View FIGURE 24 ). MANDIBLe WITH 4 OR 5 TeeTH, eXcLUDING INfeRIOR ANGLe (cOUNTS fROM 4 SPecIMeNS, FIG. 25A, D, F, H View FIGURE 25 ). SecOND TO fOURTH TeeTH BIDeNTATe ( FIG. 25B, D, F View FIGURE 25 ), UPPeR 3 TeeTH OccUPyING MORe THAN 2/3 LeNGTH Of cUTTING eDGe, LOWeR MARGIN SHORT, INfeRIOR ANGLe WITH SMALL SeTAe ( FIG 25C, E, G View FIGURE 25 ). MANDIBULAR PALP OVAL, DISTAL eND ROUNDeD ( FIG. 26A View FIGURE 26 ), DISTAL ( FIG. 26B View FIGURE 26 ) AND INTeRIOR MARGINS WITH SeRRULATe SeTAe ( FIG. 26C View FIGURE 26 ). LABRUM BILOBeD, WITH V-SHAPeD NOTcH SePARATING 2 LOBeS, BeARING 1–3 SHARP TeeTH ON eAcH LOBe (cOUNTS fROM 3 SPecIMeNS, FIG. 26D–H View FIGURE 26 ).

CIRRUS I WITH RAMI UNeqUAL, ANTeRIOR RAMUS LONG, SLeNDeR, 9 SeGMeNTeD ( FIGS. 27A View FIGURE 27 , 28A View FIGURE28 ), POSTeRIOR RAMUS 6 SeGMeNTeD, BeARING SeRRULATe SeTAe ( FIG. 28A–D View FIGURE28 ). CIRRUS II WITH RAMI SLIGHTLy UNeqUAL, ANTeRIOR RAMUS 7 SeGMeNTeD, POSTeRIOR RAMUS 6 SeGMeNTeD ( FIGS. 27B View FIGURE 27 , 28E View FIGURE28 ), WITH SeRRULATe SeTAe ( FIG. 28E, F, G, H View FIGURE28 ). CIRRUS III WITH ANTeRIOR RAMUS SLIGHTLy LONGeR THAN POSTeRIOR RAMUS, 7 AND 6 SeGMeNTS ReSPecTIVeLy ( FIGS. 27C View FIGURE 27 , 29A View FIGURE 29 ), WITH SeRRULATe SeTAe ( FIG. 29B– D View FIGURE 29 ). POSTeRIO-LATeRAL SIDe Of POSTeRIOR RAMUS Of cIRRUS III BeARING cONIcAL SPINeS ( FIG. 29B View FIGURE 29 ). CIRRI IV–VI WITH LONG, SLeNDeR, RAMI Of SIMILAR LeNGTHS ( FIGS. 27D–F View FIGURE 27 , 29E–H View FIGURE 29 , 30A–F View FIGURE 30 ). CIRRUS IV WITH ANTeRIOR RAMUS 21 SeGMeNTeD, POSTeRIOR RAMUS 22 SeGMeNTeD; cIRRUS V (15), (15); cIRRUS VI (15), (16). INTeRMeDIATe SeGMeNTS Of RAMI Of cIRRUS IV WITH 3 PAIRS Of SeRRULATe SeTAe ( FIG. 29H View FIGURE 29 ); INTeRMeDIATe SeGMeNTS Of RAMI Of cIRRUS V WITH 5 PAIRS Of SeRRULATe SeTAe ( FIG. 30C View FIGURE 30 ); INTeRMeDIATe SeGMeNTS Of RAMI Of cIRRUS VI WITH 4 PAIRS Of SeRRULATe SeTAe ( FIG. 30E View FIGURE 30 ); DISTAL PAIR LONGeST, PROXIMAL PAIR SHORTeST ( FIG. 30E View FIGURE 30 ). PeNIS LONG (1.6 TIMeS LeNGTH Of cIRRUS VI), ANNULATeD, WITH ScATTeReD SHORT, SIMPLe SeTAe ( FIG. 30G View FIGURE 30 ). PeDIceL WITH SHARP BASIDORSAL POINT ( FIG. 30H View FIGURE 30 ), APeX BeARING SHORT, SIMPLe SeTAe ( FIG. 30I View FIGURE 30 ).

HABITAT. ON THe cORALS Favites abdita , Favites flexuosa (DANA, 1846) AND Pavona venosa ( TAIWAN MAIN ISLAND AND DONGSHA ATOLL).

Distribution. RecORDeD IN JAPAN, TAIWAN MAIN ISLAND AND ADjAceNT OUTLyING ISLANDS (INcLUDING SIAO LIU-QIAO, KUeI SHAN ISLAND AND GReeN ISLAND) AND DONGSHA ATOLL.

Etymology. Trevathana longidonta IS NAMeD fOR THe PReSeNce Of A LONG TOOTH ON THe INTeRNAL SURfAce Of THe TeRGUM.

Remarks. THIS SPecIeS HAS A LONG, POINTeD TOOTH ON THe INTeRNAL SURfAce Of THe TeRGUM, WHIcH eXTeNDS BeyOND THe BASAL MARGIN Of THe TeRGUM. THIS feATURe IS ALSO PReSeNT IN Trevathana sarae BRIcKNeR, SIMON-BLecHeR & AcHITUV, 2010. HOWeVeR, Trevathana sarae DOeS NOT HAVe cONIcAL SPINeS ON cIRRUS III, AND THUS DIffeRS fROM T. longidonta sp. nov.

Trevathana taiwanus sp. nov.

HTTP://zOOBANK.ORG/URN:LSID:zOOBANK.ORG:AcT:6B52B28A-1952-4761-98C8-A8D2BE6623C5 FIGUReS 2I, J View FIGURE 2 ; 31–38

Trevathana sp. nov. 2. Chan et al., 2013: 328, figs. 290–298.

Material examined. HOLOTyPe: ASIZCR000362, SHANfU FISHING HARBOR, SIAO-LIU-QIAO ISLAND, TAIWAN (22o20.20’N, 120o, 21.43’E), AUGUST 2010, cOLL. B.K.K. CHAN, ON cORAL Platygyra lamellina (EHReNBeRG, 1834). PARATyPeS: ASIZCR000363, SHANfU FISHING HARBOR, SIAO-LIU-QIAO ISLAND, TAIWAN (22o20.20’N, 120o, 21.43’E), AUGUST 2010, cOLL. B.K.K. CHAN, ON cORAL Platygyra lamellina . ASIZCR000364, DATA SAMe AS ASIZCR000363.

Diagnosis. ScUTAL WIDTH 5 TIMeS LONGeR THAN HeIGHT. OccLUDeNT MARGIN cURVeD. MeDIAN cLOSeD fURROW cURVeD, ReAcHING 5/6 WIDTH Of ScUTUM. ARTIcULAR MARGIN WITH SeMIcIRcULAR, INTeRLOcKING TOOTH, WIDTH Of TOOTH ABOUT 3/4 HeIGHT Of ARTIcULAR MARGIN. ADDUcTOR PLATe PReSeNT, eXTeNDING fROM BASAL MARGIN. TeRGUM TRIANGULAR, BASAL MARGINS LONGeR THAN ScUTAL AND OccLUDeNT MARGINS, INTeRNAL TOOTH ABSeNT. SPUR WIDe, BLUNT, LONGITUDINAL MeDIAN fURROW TRIANGULAR, WIDTH INcReASING fROM ScUTAL MARGIN TO BASAL MARGIN.

Description. SHeLL OVAL, cOVeReD By cORAL WHeN ALIVe ( FIG. 2I, J View FIGURE 2 ). SHeLL fLAT (8.0 MM BD HOLOTyPe), eLLIPTIcAL, PLATeS fUSeD, eXTeRNAL SURfAce WITH 25 WHITe (AfTeR cLeANING AND PReSeRVATION) RADIATING ROWS WITH UP TO 7 PROjecTIONS IN A ROW ( FIG. 31A View FIGURE 31 ). CIRcUMfeReNce Of BASe Of SHeLL WITH 31 SHORT PROjecTIONS, PROjecTIONS MARGIN SeRRATeD ( FIG. 31B View FIGURE 31 ). ORIfIce eLLIPTIcAL, ABOUT 1/3 BASAL ROSTRO-cARINAL DIAMeTeR LOcATeD cLOSeR TO cARINAL MARGINS THAN ROSTRAL MARGINS. ScUTUM AND TeRGUM WHITe, SePARATeD ( FIG. 31C–F View FIGURE 31 ). ScUTUM TRANSVeRSALLy eLONGATeD, TeRGAL MARGIN 5 TIMeS LONGeR THAN OccLUDeNT MARGIN ( FIG. 31C–D View FIGURE 31 ). OccLUDeNT MARGIN cURVeD. MeDIAN cLOSeD fURROW cURVeD, fURROW LeNGTH ABOUT 5/6 LeNGTH Of ScUTUM, WITH 14 SIMILAR-SIzeD TeeTH ALONG MARGINS Of fURROW ( FIG. 31C View FIGURE 31 ). ARTIcULAR MARGIN WITH A LARGe, SeMIcIRcULAR INTeRLOcKING TOOTH, WIDTH Of TOOTH ReAcHING 3/4 LeNGTH Of ARTIcULAR MARGIN, GROWTH LINeS ON TOOTH. EXTeRNAL SURfAce Of ScUTUM WITH ADDUcTOR PLATe eXTeNDING fROM BASAL MARGIN ( FIG. 31C View FIGURE 31 ). TeRGUM TRIANGULAR, BASAL MARGINS LONGeR THAN ScUTAL AND OccLUDeNT MARGINS ( FIG. 31E View FIGURE 31 ). INNeR SIDe Of ScUTAL MARGIN WITH SeMIcIRcULAR DePReSSION AccOMMODATING INTeRLOcKING TOOTH Of ScUTUM ( FIG. 31F View FIGURE 31 ). SPUR WIDe, BLUNT, eXTeRNAL SURfAce WITH TRIANGULAR-SHAPeD, LONGITUDINAL, MeDIAL fURROW, WIDTH Of MeDIAL fURROW INcReASING fROM DIRecTION Of ScUTAL MARGIN TO BASAL MARGIN ( FIG. 31E View FIGURE 31 ).

MAXILLA SUBTRIANGULAR ( FIG. 32A View FIGURE 32 ), SIMPLe SeTAe DISTALLy ( FIG. 32B View FIGURE 32 ) AND ON INTeRIOR MARGIN ( FIG. 32C View FIGURE 32 ). MAXILLULe cUTTING eDGe STRAIGHT, WITHOUT NOTcH, ROW Of 9–11 SPINeS (cOUNTS fROM 3 SPecIMeNS, ( FIG. 32D, G, H View FIGURE 32 ), SeTAe cLOSe TO SUPeRIOR eDGe Of cUTTING MARGIN LARGeST; INfeRIOR MARGIN NeXT TO cUTTING eDGe WITH DeNSe, fINe, SIMPLe SeTAe ( FIG. 32F View FIGURE 32 ), LOWeR eDGe Of cUTTING MARGIN WITH LONG, SIMPLe SeTAe ( FIG. 32E View FIGURE 32 ). MANDIBLe WITH 4 OR 5 TeeTH, eXcLUDING INfeRIOR ANGLe (cOUNTS fROM 3 SPecIMeNS, FIG. 33A, E, H View FIGURE 33 ). SecOND TO fOURTH TeeTH BIDeNTATe ( FIG. 33B, F View FIGURE 33 ), \ fIRST 3 TeeTH OccUPyING MORe THAN 2/3 LeNGTH Of cUTTING eDGe, LOWeR MARGIN SHORT ( FIG. 33D, G, H View FIGURE 33 ), INfeRIOR ANGLe BLUNT ( FIG. 33G View FIGURE 33 ). MANDIBULAR PALP OVAL, eLONGATeD ( FIG. 34A View FIGURE 34 ), SIMPLe SeTAe ON DISTAL TIP ( FIG. 34B View FIGURE 34 ), SeRRULATe SeTAe ON INTeRIOR MARGIN ( FIG. 34C View FIGURE 34 ). LABRUM BILOBeD, LOBeS SePARATeD By V-SHAPeD NOTcH, SINGLe SHARP TOOTH ON eAcH LOBe (cONSISTeNT IN 2 SPecIMeNS, FIG. 34D–H View FIGURE 34 ).

CIRRUS I WITH RAMI UNeqUAL, ANTeRIOR RAMUS LONG, SLeNDeR, 15 SeGMeNTeD ( FIGS. 35A View FIGURE35 , 36A View FIGURE 36 ), POSTeRIOR RAMUS 6 SeGMeNTeD, BeARING SeRRULATe SeTAe ( FIG. 36B–D View FIGURE 36 ). CIRRUS II WITH RAMI SLIGHTLy UNeqUAL, ANTeRIOR RAMUS 10 SeGMeNTeD, POSTeRIOR RAMUS 9 SeGMeNTeD ( FIGS. 35B View FIGURE35 , 36E View FIGURE 36 ), BeARING SeRRULATe SeTAe ( FIG. 36F–H View FIGURE 36 ). CIRRUS III WITH ANTeRIOR RAMUS SLIGHTLy LONGeR THAN POSTeRIOR RAMUS, 11 AND 9 SeGMeNTS ReSPecTIVeLy ( FIGS. 35C View FIGURE35 , 37A View FIGURE 37 ), BeARING SeRRULATe SeTAe ( FIG. 37A–D View FIGURE 37 ). DORSAL SIDe Of POSTeRIOR RAMUS WITH cOMBS, cONIcAL SPINeS ABSeNT ( FIG. 37B View FIGURE 37 ). CIRRI IV–VI LONG, SLeNDeR, RAMI SIMILAR IN LeNGTH ( FIGS. 35D–F View FIGURE35 , 37E View FIGURE 37 , 38A–B View FIGURE 38 ). CIRRUS IV ANTeRIOR RAMUS 17 SeGMeNTeD, POSTeRIOR RAMUS 21 SeGMeNTeD; cIRRUS V (22), (22); cIRRUS VI (23), (16) SeGMeNTS. SeGMeNTS Of RAMI Of cIRRUS IV WITH 3 PAIRS Of SeRRULATe SeTAe ( FIG. 37F–H View FIGURE 37 ); RAMI Of cIRRI V–VI WITH 4 PAIRS Of SeRRULATe SeTAe ( FIG. 38C–F View FIGURE 38 ); DISTAL PAIR LONGeST, PROXIMAL PAIR SHORTeST, ( FIGS. 35G–H View FIGURE35 , 38C, E View FIGURE 38 ). PeNIS LONG, 2 TIMeS LeNGTH Of cIRRUS VI, ANNULATeD, WITH ScATTeReD SHORT, SIMPLe SeTAe ( FIG. 38G View FIGURE 38 ). PeDIceL WITH BLUNT BASIDORSAL POINT ( FIG. 38G, H View FIGURE 38 ), APeX BeARING SHORT, SIMPLe SeTAe ( FIG. 38I View FIGURE 38 ).

Etymology. THIS SPecIeS IS NAMeD fOR ITS TyPe LOcALITy, TAIWAN.

Habitat. AT PReSeNT ONLy RecORDeD ON THe cORAL Platygyra lamellina .

Distribution. CURReNTLy ONLy RecORDeD fROM TAIWAN.

Remarks. THeRe ARe ONLy fOUR Trevathana SPecIeS, T. noae , T. taiwanus sp. nov., T tureiae AND T. niuea , WHIcH DO NOT HAVe A TOOTH ON THe INTeRNAL SIDe Of THe TeRGUM. Trevathana taiwanus IS MORPHOLOGIcALLy SIMILAR TO T. noae AcHITUV & HOSIe, 2013 (See Key BeLOW). HOWeVeR, THe cONIcAL SPINeS ON THe DISTAL SeGMeNTS Of THe RAMI Of cIRRUS III THAT ARe fOUND IN T. noae ARe ABSeNT IN Trevathana taiwanus sp. nov.