Trevathana conica, 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 : 153-170

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.6018182
persistent identifier	https://treatment.plazi.org/id/03B987AA-F772-606E-FF0C-FB9CFA55FC37
treatment provided by	Plazi
scientific name	Trevathana conica
status

Treatment

Subfamily Pyrgomatinae Gray, 1825

Trevathana conica sp. nov.

HTTP://zOOBANK.ORG/URN:LSID:zOOBANK.ORG:AcT:32E9A213-82B1-4665-820C-D993983F8B0F FIGUReS 2A, B View FIGURE 2 ; 3–8

Material examined. HOLOTyPe: ASIZCR000347 , DONGSHA ATOLL (20°41.478 N, 116°45.103 E), TAIWAN, MAy 2014, cOLL. H.N. CHeN, P.C GoogleMaps . TSAI, H.C. LIN, ON cORAL Goniastrea edwardsi CHeVALIeR, 1971. PARATyPeS: ASIZCR000348 , DATA SAMe AS ASIZCR000347 . ASIZCR000349 , DONGSHA ATOLL (20°41.721 N, 116°47.105 E), TAIWAN, MAy 2014, cOLL. H.N. CHeN, P.C GoogleMaps . TSAI, H.C. LIN, ON cORAL Goniastrea edwardsi . ASIZCR000350 AND ASIZCR000351 , DATA SAMe AS ASIZCR000347 . ASIZCR000352 , DONGSHA ATOLL (20°42.380 N, 116°42.088 E), TAIWAN, MAy 2014, cOLL. H.N. CHeN, P.C GoogleMaps . TSAI, H.C. LIN, ON cORAL Goniastrea edwardsi .

Diagnosis. POSTeRIO-LATeRAL SIDe Of POSTeRIOR RAMUS Of cIRRI II AND III BeARING cONIcAL SPINeS. INTeRLOcKING TOOTH Of ScUTUM PROjecTING MeDIALLy fROM ARTIcULAR MARGIN, TeeTH WIDTH ABOUT 2/3 Of TeRGAL MARGIN Of ScUTUM.

Description. SHeLL cOVeReD By cORAL TISSUe WHeN ALIVe ( FIG. 2A, B View FIGURE 2 ). SHeLL WHITe AfTeR cLeANING AND PReSeRVATION, (5.0 MM BD fOR HOLOTyPe), fLAT, eLLIPTIcAL, PLATeS fUSeD, OUTeR SURfAce WITH 20 RADIATING ROWS Of PROjecTIONS, UP TO fIVe PROjecTIONS IN eAcH ROW ( FIG. 3A View FIGURE 3 ). CIRcUMfeReNce Of BASe Of SHeLL WITH 32 SHORT PROjecTIONS, eXTeNDING BeyOND OUTLINe ( FIG. 3B View FIGURE 3 ). ORIfIce eLLIPTIcAL, ORIfIce LeNGTH ABOUT 1/2 LeNGTH Of ROSTRO-cARINAL DIAMeTeR ( FIG. 3A, B View FIGURE 3 ). ScUTUM AND TeRGUM WHITe, SePARATeD ( FIG. 3C–F View FIGURE 3 ). ScUTUM TRANSVeRSALLy eLONGATeD, OccLUDeNT MARGIN 5 TIMeS LONGeR THAN TeRGAL MARGIN ( FIG. 3C, D View FIGURE 3 ). OccLUDeNT MARGIN SLIGHTLy cONVeX. EXTeRNALLy, ScUTUM WITH SLIGHTLy cURVeD, cLOSeD MeDIAN fURROW, fURROW LeNGTH ABOUT 4/5 LeNGTH Of ScUTUM ( FIG. 3C View FIGURE 3 ). ARTIcULAR MARGIN Of ScUTUM WITH INTeRLOcKING TOOTH, PROjecTING MeDIALLy ARTIcULAR MARGIN, WIDTH ABOUT 2/3 Of ARTIcULAR MARGIN, GROWTH LINeS ON TOOTH ( FIG. 3C, D View FIGURE 3 ). ADDUcTOR PLATe ABSeNT ( FIG. 3C, D View FIGURE 3 ). TeRGUM SUBTRIANGULAR ( FIG. 3E, F View FIGURE 3 ), ScUTAL MARGIN cONcAVe WITH MeDIAL NOTcH, TRUNcATeD SPUR ON BASAL MARGIN. EXTeRNAL TeRGUM SURfAce WITH SHALLOW, LONGITUDINAL MeDIAN fURROW, ReAcHING 90% LeNGTH Of TeRGUM ( FIG. 3C View FIGURE 3 ). SeMIcIRcULAR DePReSSION, DeMARcATeD WITH cONceNTRIc GROWTH LINeS, AccOMMODATING INTeRLOcKING TOOTH ( FIG. 3F View FIGURE 3 ). BROAD, INWARD PROjecTING TOOTH ON INNeR SIDe Of SPUR, LOcATeD ON BASAL eND Of SPUR, LONG AXIS Of TOOTH PARALLeL TO BASAL MARGIN Of TeRGUM, PeRPeNDIcULAR TO INNeR SURfAce Of TeRGUM ( FIG. 3F View FIGURE 3 ).

MAXILLA eLLIPTIcAL ( FIG. 4A View FIGURE4 ), BI-LOBeD, SeRRULATe SeTAe ON eXTeRIOR AND INTeRIOR DISTAL MARGINS ( FIG. 4A–D View FIGURE4 ). MAXILLULe WITH STRAIGHT cUTTING eDGe WITHOUT NOTcH, WITH ROW Of 10–11 SPINeS ( FIG. 4E View FIGURE4 ). FINe, SIMPLe SeTAe ON UPPeR AND LOWeR MARGINS ( FIG. 4F, G, H View FIGURE4 ). MANDIBLe WITH 5 TeeTH, eXcLUDING INfeRIOR ANGLe ( FIG. 5A View FIGURE 5 ). SecOND TO fOURTH TeeTH BIDeNTATeD( FIG. 5B–C View FIGURE 5 ). FIRST 3 TeeTH OccUPyING ABOUT 4/5 LeNGTH Of cUTTING eDGe, LOWeR MARGIN SHORT, WITH SIMPLe SeTAe, INfeRIOR ANGLe WITH SeVeRAL SeTAe DISTALLy ( FIG. 5D View FIGURE 5 ). MANDIBULAR PALP OVAL ( FIG. 5E View FIGURE 5 ), BeARING SeRRULATe SeTAe ON DISTAL ( FIG. 5F View FIGURE 5 ) AND eXTeRIOR MARGINS. LABRUM BILOBeD, LOBeS SePARATeD By V-SHAPeD NOTcH ( FIG. 5G View FIGURE 5 ), SINGLe TOOTH ON LefT SIDe Of NOTc, TWO TeeTH ON RIGHT SIDe Of NOTcH IN HOLOTyPe ( FIG. 5H, I View FIGURE 5 ).

CIRRUS I WITH RAMI UNeqUAL; ANTeRIOR RAMUS 11 SeGMeNTeD ( FIG. 6A View FIGURE 6 ); POSTeRIOR RAMUS 7 SeGMeNTeD, BeARING SeRRULATe SeTAe ( FIG. 6A–D View FIGURE 6 ). CIRRUS II WITH RAMI SUBeqUAL; ANTeRIOR RAMUS 8-SeGMeNTeD; POSTeRIOR RAMUS 7 SeGMeNTeD, BeARING SeRRULATe SeTAe ( FIG. 6E–H View FIGURE 6 ), POSTeRIO-LATeRAL SIDe Of 2 DISTAL SeGMeNTS WITH ARRAy Of cONIcAL SPINeS ( FIG. 6F View FIGURE 6 ). CIRRUS III WITH ANTeRIOR AND POSTeRIOR RAMI Of NeARLy eqUAL LeNGTH; ANTeRIOR RAMUS 7 SeGMeNTeD; POSTeRIOR RAMUS 6 SeGMeNTeD ( FIG. 7A View FIGURE 7 ), BeARING SeRRULATe SeTAe ( FIG. 7E View FIGURE 7 ), POSTeRIO-LATeRAL SIDe Of 5 DISTAL SeGMeNTS BeARING cONIcAL SPINeS ( FIG. 7C, D View FIGURE 7 ). CIRRI IV–VI LONG, SLeNDeR, BOTH RAMI Of SIMILAR LeNGTH ( FIGS. 7F View FIGURE 7 , 8A–F View FIGURE8 ); cIRRUS IV ANTeRIOR RAMUS 20-SeGMeNTeD, POSTeRIOR RAMUS 19-SeGMeNTeD; cIRRUS V (20) (20), cIRRUS VI (20) (20) ( FIGS. 7F View FIGURE 7 , 8A–F View FIGURE8 ).; eAcH INTeRMeDIATe SeGMeNT Of BOTH RAMI Of cIRRI IV TO VI BeARING 2 PAIRS Of LONG SeRRULATe SeTAe AND 2 PAIRS Of SIMPLe SeTAe ( FIGS. 7G, H View FIGURE 7 , 8B, E, F View FIGURE8 ), DISTAL PAIR LONGeST, PROXIMAL PAIR SHORTeST. PeNIS ANNULATeD, WITH ScATTeReD SHORT SIMPLe SeTAe. PeDIceL WITH SHORT, BLUNT BASIDORSAL POINT ( FIG. 8G, H View FIGURE8 ), APeX BeARING SHORT, SIMPLe SeTAe ( FIG. 8H View FIGURE8 ).

HABITAT. ON THe cORAL Goniastrea edwardsi .

Distribution. AT PReSeNT, ONLy RecORDeD fROM DONGSHA ATOLL, TAIWAN.

Etymology. Trevathana conica IS NAMeD fOR HAVING cONIcAL SPINeS ON BOTH cIRRI II AND III WHIcH IS A DIAGNOSTIc cHARAcTeR fOR THIS SPecIeS.

Remarks. THIS SPecIeS IS DIAGNOSeD By HAVING cONIcAL SPINeS ON cIRRI II AND III, WHILST T. longidonta AND T. noae HAVe cONIcAL SPINeS ONLy ON cIRRUS III.

Trevathana doni sp. nov.

HTTP://zOOBANK.ORG/URN:LSID:zOOBANK.ORG:AcT:1734547C-11FC-4435-BB41-CE4351AAE8A0 FIGUReS 2C, D View FIGURE 2 ; 9–16

Trevathana sp. nov. 1. Chan et al., 2013: 318, figs. 281–289.

Trevathana sp. Malay & Michonneau, 2014: fig. 3, suppl. Tab. 1 (voucher number UF8633).

Material examined. HOLOTyPe: ASIZCR 000353, NANWAN, KeNTING, TAIWAN (21o57.20N, 120o23.18’E), NOVeMBeR 2010, cOLL. B.K.K. CHAN, ON cORAL Echinopora lamellosa (ESPeR, 1795). PARATyPeS: ASIZCR 000226, DATA SAMe AS ASIZCR 000353. ASIZCR 000354, DONGSHA ATOLL (20°44.573 N, 116°54.679 E), TAIWAN, MAy 2015, cOLL. P.C. TSAI, Y.F. TSAO, Y.W. CHANG, ON cORAL Echinopora pacificus VeRON, 1990. MNHN IC- 2003, PAPUA NeW PKK2, MADANG, PAPUA NeW GUINeA, NOVeMBeR 2012, cOLL. B.K.K. CHAN, ON cORAL Oxypora SP. OTHeR MATeRIAL: CEL-LAN- 102-5, LANyU ISLAND, TAIWAN, OcTOBeR 2007, cOLL. B.K.K. CHAN, ON cORAL Montipora SP.

Diagnosis. ScUTAL WIDTH 3 TIMeS LONGeR THAN HeIGHT. OccLUDeNT MARGIN STRAIGHT, MeDIAN cLOSeD fURROW SLIGHTLy cURVeD, fURROW LeNGTH ABOUT 4/5 LeNGTH Of ScUTUM, WITH cONTINUOUS, SIMILAR-SIzeD TeeTH. ARTIcULAR MARGIN Of ScUTUM WITH INTeRLOcKING TOOTH, TOOTH NARROW, WIDTH ABOUT1/3 HeIGHT Of TeRGAL MARGIN. ADDUcTOR PLATe ABSeNT. TeRGUM SUBTRIANGULAR. INTeRNAL SURfAce WITH INWARD TOOTH LOcATeD ON LOWeR PART Of TeRGUM, PeRPeNDIcULAR TO BASAL MARGIN Of TeRGUM.

Description. SHeLL cOVeReD By cORAL WHeN ALIVe ( FIG. 2C, D View FIGURE 2 ). SHeLL (5.8 MM BD HOLOTyPe) fLAT, eLLIPTIcAL, PLATeS fUSeD, WHITe (AfTeR cLeANING AND PReSeRVATION), WITH ScATTeReD PROjecTIONS ON SURfAce ( FIG. 9A View FIGURE 9 ). CIRcUMfeReNce Of BASe Of SHeLL WITH 40–44 SHORT PROjecTIONS, eXTeNDING BeyOND MARGIN ( FIG. 9B View FIGURE 9 ), ORIfIce eLLIPTIcAL, ROSTRO-cARINAL DIAMeTeR Of ORIfIce NeARLy 1/3 LeNGTH Of SHeLL ROSTRO-cARINAL DIAMeTeR. ScUTUM AND TeRGUM WHITe, SePARATeD ( FIG. 9C– F View FIGURE 9 ). ScUTUM TRANSVeRSALLy eLONGATeD, TeRGAL MARGIN 3 TIMeS LONGeR THAN OccLUDeNT MARGIN. OccLUDeNT MARGIN STRAIGHT. EXTeRNAL SURfAce Of ScUTUM WITH SLIGHTLy cURVeD, MeDIAN cLOSeD fURROW, LeNGTH Of fURROW ReAcHING 4/5 LeNGTH Of ScUTUM ( FIG. 9C View FIGURE 9 ). ARTIcULAR MARGIN WITH INTeRLOcKING TOOTH, WIDTH Of TOOTH 1/3 HeIGHT Of ARTIcULAR MARGIN ( FIG. 9E View FIGURE 9 ). ADDUcTOR PLATe ABSeNT ( FIG. 9C View FIGURE 9 ). TeRGUM SUBTRIANGULAR ( FIG. 9D, F View FIGURE 9 ), ScUTAL MARGIN cONcAVe, WITH NOTcH; INNeR SIDe Of ScUTAL MARGIN WITH SeMIcIRcULAR DePReSSION AccOMMODATING INTeRLOcKING TOOTH ( FIG. 9F View FIGURE 9 ). EXTeRNAL SURfAce WITH SHALLOW, LONGITUDINAL MeDIAN fURROW. INNeR SURfAce WITH INWARD TOOTH LOcATeD cLOSe TO BASAL MARGIN Of TeRGUM, PeRPeNDIcULAR TO BASAL MARGIN ( FIG. 9F View FIGURE 9 ).

MAXILLA eLLIPTIcAL ( FIG. 10A View FIGURE 10 ), WITH SeRRULATe SeTAe ON cIRcUMfeReNce ( FIG. 10B–C View FIGURE 10 ). MAXILLULe WITH cUTTING eDGe STRAIGHT WITHOUT NOTcH, ROW Of 9–11 SPINeS ( FIG. 10E–H View FIGURE 10 ). UPPeR AND LOWeR MARGINS WITH LONG, SIMPLe SeTAe ( FIG. 10 D View FIGURE 10 ). MANDIBLe WITH 4 OR 5 TeeTH, eXcLUDING INfeRIOR ANGLe (INcONSISTeNT IN 2 SPecIMeNS, FIG. 11A, F View FIGURE11 ). SecOND TO fOURTH TeeTH BIDeNTATe ( FIG. 11B–E View FIGURE11 ), UPPeR 3 TeeTH OccUPyING ABOUT 4/5 LeNGTH Of cUTTING eDGe, LOWeR MARGIN SHORT WITH SMALL, cONIcAL SPINeS, INfeRIOR ANGLe WITH SeVeRAL SeTAe ( FIG. 11E, H View FIGURE11 ). MANDIBULAR PALP OVAL ( FIG. 12A View FIGURE 12 ), SeRRULATe SeTAe ON DISTAL ( FIG. 12B View FIGURE 12 ) AND eXTeRIOR MARGINS ( FIG. 12C View FIGURE 12 ). LABRUM BILOBeD, LOBeS SePARATeD By V-SHAPeD NOTcH ( FIG. 12E View FIGURE 12 ), SINGLe TOOTH OR NO TOOTH ON eAcH SIDe Of NOTcH (INcONSISTeNT IN 2 SPecIMeNS, FIG. 12D, G View FIGURE 12 ).

CIRRUS I WITH SUBeqUAL RAMI; ANTeRIOR RAMUS LONG, SLeNDeR, 13 SeGMeNTeD ( FIGS. 13A View FIGURE 13 , 14A View FIGURE 14 ); POSTeRIOR RAMUS 5 SeGMeNTeD, BeARING SeRRULATe SeTAe ( FIG. 14B–D View FIGURE 14 ). CIRRUS II WITH RAMI SLIGHTLy SUBeqUAL; ANTeRIOR RAMUS 10- SeGMeNTeD, POSTeRIOR RAMUS 8-SeGMeNTeD ( FIGS. 13B View FIGURE 13 , 14E View FIGURE 14 ), BeARING SeRRULATe SeTAe ( FIG. 14F–H View FIGURE 14 ). CIRRUS III WITH ANTeRIOR RAMUS SLIGHTLy LONGeR THAN POSTeRIOR RAMUS; ANTeRIOR RAMUS 12-SeGMeNTeD, POSTeRIOR RAMUS 9-SeGMeNTeD ( FIGS. 13C View FIGURE 13 , 15A View FIGURE 15 ), BeARING SeRRULATe SeTAe ( FIG. 15B, C View FIGURE 15 ), ANTeRIOR SIDe Of POSTeRIOR RAMUS BeARING cONIcAL SPINeS ( FIG. 15D View FIGURE 15 ). CIRRI IV–VI LONG, SLeNDeR, RAMI SIMILAR IN LeNGTH ( FIGS. 13D–F View FIGURE 13 , 15E View FIGURE 15 , 16A–B View FIGURE 16 ). CIRRUS IV WITH ANTeRIOR RAMUS 20-SeGMeNTeD, POSTeRIOR 19-SeGMeNTeD; cIRRUS V (25) (24); cIRRUS VI (23), (25). EAcH INTeRMeDIATe SeGMeNT Of BOTH RAMI Of cIRRI IV AND VI WITH 4 PAIRS Of SeRRULATe SeTAe ( FIGS. 15F–H View FIGURE 15 , 16 View FIGURE 16 DF), DISTAL PAIR LONGeST, PROXIMAL PAIR SHORTeST. EAcH INTeRMeDIATe SeGMeNT Of BOTH RAMI Of cIRRUS V BeARING 3 PAIRS Of SeRRULATe SeTAe ( FIG. 16C View FIGURE 16 ). PeNIS LeNGTH 0.6 TIMeS LeNGTH Of cIRRUS VI, ANNULATeD, WITH ScATTeReD SHORT, SIMPLe SeTAe ( FIG. 16G View FIGURE 16 ). PeDIceL WITH LONG, SHARP BASIDORSAL POINT ( FIG. 16H View FIGURE 16 ), APeX BeARING SHORT, SIMPLe SeTAe ( FIG. 16I View FIGURE 16 ).

HABITAT. ON cORAL Echinopora lamellosa , E. pacificus , Montipora SP. AND Oxypora SP. (PAPUA NeW GUINeA).

Distribution. AT PReSeNT, RecORDeD fROM TAIWAN MAIN ISLAND, DONGSHA ATOLL, PHILIPPINeS ( MALAy & MIcHONNeAU 2014) AND PAPUA NeW GUINeA.

Etymology. Trevathana doni IS NAMeD IN HONOR Of DONALD T. ANDeRSON (EMeRITUS PROfeSSOR, UNIVeRSITy Of SyDNey, AUSTRALIA) IN APPRecIATION Of HIS cONTRIBUTION TO THe TAXONOMy AND PHyLOGeNy Of cORAL BARNAcLeS.

Remarks. THIS SPecIeS IS SIMILAR TO T. dentata , BUT THe BASIDORSAL POINT Of THe PeNIS IS MUcH LONGeR. THe LeNGTH Of THe BASIDORSAL POINT Of THe PeNIS Of T. doni IS ABOUT THe LeNGTH Of THe BASAL SeGMeNT Of THe PeNIS, WHILe THe LeNGTH Of THAT Of T. dentata IS ABOUT 1/8 Of THe BASAL SeGMeNT Of THe PeNIS (BRIcKNeR et al. 2009). THe GeNeTIc DIVeRGeNceS Of COI AND 12S AMONG INDIVIDUALS cOLLecTeD fROM Oxypora IN PAPUA NeW GUINeA AND Echinopora SPP. fROM TAIWAN AND DONGSHA ATOLL (See SUPPLeMeNTARy TABLe 1) ARe SMALL (<1 %), INDIcATING THeSe INDIVIDUALS SHOULD Be ASSIGNeD TO THe SAMe SPecIeS.