Trevathana dongshaensis, 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 : 170-177

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.6018186
persistent identifier	https://treatment.plazi.org/id/03B987AA-F763-6067-FF0C-FC79FDECFD47
treatment provided by	Plazi
scientific name	Trevathana dongshaensis
status	sp. nov.

Treatment

Trevathana dongshaensis sp. nov.

HTTP://zOOBANK.ORG/URN:LSID:zOOBANK.ORG:AcT:BF 022607 -A624-47ED-B90E-21BD032ED670 FIGUReS 2E, F View FIGURE 2 ;17–22

Material examined. HOLOTyPe: ASIZCR000355, DONGSHA ATOLL (20°44.949 N, 116°43.301 E), TAIWAN, MAy 2014, cOLL. H.N. CHeN, P.C. TSAI, H.C. LIN, ON cORAL Goniastrea minuta VeRON, 2000 GoogleMaps . PARATyPeS: ASIZCR000356, DATA SAMe AS ASIZCR000355. ASIZCR000357, DONGSHA ATOLL (20°46.767 N, 116°48.402 E), TAIWAN, MAy 2014, cOLL. P.C. TSAI, Y.F. TSAO, Y.W. CHANG, ON cORAL Goniastrea minuta . ASIZCR000358, DATA SAMe AS ASIZCR000357. GoogleMaps

Diagnosis. ScUTUM WITH VeRy BROAD INTeRLOcKING TOOTH, TOOTH HeIGHT ABOUT 3/4 TIMeS HeIGHT Of ARTIcULAR MARGIN. POSTeRIO-LATeRAL SURfAceS Of POSTeRIOR RAMUS Of cIRRUS III BeARING ARRAy Of cONIcAL SPINeS. TeRGUM WITH INWARD TOOTH, PeRPeNDIcULAR TO BASAL MARGIN.

Description. SHeLL cOVeReD By cORAL WHeN ALIVe ( FIG. 2E, F View FIGURE 2 ). SHeLL (3.5 MM BD HOLOTyPe) fLAT, eLLIPTIcAL, PLATeS fUSeD, WHITe (AfTeR cLeANING AND PReSeRVATION), OUTeR SURfAce WITH 17 RADIATING ROWS, UP TO 5 PROjecTIONS IN ROW (17A). CIRcUMfeReNce Of BASe Of SHeLL WITH>30 SHORT PROjecTIONS, eXTeNDING BeyOND OUTLINe ( FIG. 17B View FIGURE 17 ), ORIfIce eLLIPTIcAL, ROSTRO-cARINAL LeNGTH Of ORIfIce NeARLy 1/3 LeNGTH Of TOTAL ROSTRO-cARINAL DIAMeTeR. ScUTUM AND TeRGUM WHITe, SePARATeD ( FIG. 17C–F View FIGURE 17 ). ScUTUM TRANSVeRSALLy eLONGATeD, TeRGAL MARGIN ABOUT 3 TIMeS LONGeR THAN OccLUDeNT MARGIN. OccLUDeNT MARGIN STRAIGHT. EXTeRNAL SURfAce Of ScUTUM WITH STRAIGHT, MeDIAN, cLOSeD fURROW ReAcHING eNTIRe LeNGTH Of ScUTUM ( FIG. 17C View FIGURE 17 ). ARTIcULAR MARGIN Of ScUTUM WITH WIDe INTeRLOcKING TOOTH, TOOTH HeIGHT ABOUT 3/5 HeIGHT Of ARTIcULAR MARGIN ( FIG. 17C View FIGURE 17 ). ADDUcTOR PLATe ABSeNT ( FIG. 17D View FIGURE 17 ). TeRGUM SUBTRIANGULAR ( FIG. 17E, F View FIGURE 17 ), ScUTAL MARGIN cONcAVe, WITH NOTcH; SPUR TRUNcATeD. EXTeRNAL SURfAce WITH SHALLOW, LONGITUDINAL, MeDIAN fURROW ( FIG. 17E View FIGURE 17 ). INNeR SIDe Of ScUTAL MARGIN WITH SeMIcIRcULAR DePReSSION AccOMMODATING INTeRLOcKING TOOTH ( FIG. 17F View FIGURE 17 ). INNeR SURfAce AN INWARD TOOTH LOcATeD ON SPUR, AXIS Of INTeRNAL TOOTH PARALLeL TO AXIS Of SPUR, TIP Of TOOTH eXTeNDING BeyOND BASAL MARGIN Of TeRGUM ( FIG. 17F View FIGURE 17 ).

MAXILLA eLLIPTIcAL ( FIG. 18A View FIGURE 18 ), BI-LOBeD, SeRRULATe SeTAe ON eXTeRIOR AND INTeRIOR MARGINS AND DISTAL eNDS Of LOBeS ( FIG. 18B–D View FIGURE 18 ). MAXILLULe WITH cUTTING eDGe STRAIGHT WITHOUT NOTcH, WITH ROW Of 8 SPINeS ( FIG. 18E View FIGURE 18 ), UPPeR AND LOWeR MARGINS WITH SIMPLe SeTAe ( FIG. 18F–H View FIGURE 18 ). MANDIBLe WITH 5 TeeTH, eXcLUDING INfeRIOR ANGLe ( FIG 19A View FIGURE 19 ). SecOND, THIRD AND fOURTH TeeTH BIDeNTATe ( FIG. 19A–D View FIGURE 19 ). FIRST 3 TeeTH OccUPyING ABOUT 4/5 LeNGTH Of cUTTING eDGe, LOWeR MARGIN SHORT WITH feW SeTAe, INfeRIOR ANGLe WITH SeVeRAL SeTAe DISTALLy ( FIG. 19D View FIGURE 19 ). MANDIBULAR PALP OVAL ( FIG. 19E View FIGURE 19 ), BeARING SeRRULATe SeTAe ON eXTeRIOR MARGIN AND DISTALLy ( FIG. 19F View FIGURE 19 ). LABRUM BILOBeD, LOBeS SePARATeD By V-SHAPeD NOTcH ( FIG. 19G View FIGURE 19 ), 3 TeeTH ON LefT SIDe Of NOTcH (19H), NO TeeTH OBSeRVeD ON RIGHT SIDe ( FIG. 19I View FIGURE 19 ).

CIRRUS I WITH RAMI SUBeqUAL; ANTeRIOR RAMUS LONG, SLeNDeR, 8 SeGMeNTeD ( FIG. 20A View FIGURE 20 ); POSTeRIOR RAMUS 5 SeGMeNTeD, BOTH RAMI BeARING SeRRULATe SeTAe ( FIG. 20B–D View FIGURE 20 ). CIRRUS II WITH RAMI SLIGHTLy UNeqUAL; ANTeRIOR RAMUS 9- SeGMeNTeD, POSTeRIOR RAMUS 6-SeGMeNTeD ( FIG. 20E View FIGURE 20 ), BeARING SeRRULATe SeTAe ( FIG. 20F, H View FIGURE 20 ); ANTeRIOR Of POSTeRIOR RAMUS BeARING cOMB STRUcTUReS ( FIG. 20G View FIGURE 20 ). CIRRUS III WITH ANTeRIOR AND POSTeRIOR RAMI SIMILAR LeNGTH, 8 SeGMeNTeD ( FIG. 21A View FIGURE 21 ), BeARING SeRRULATe SeTAe ( FIG. 21C–E View FIGURE 21 ); POSTeRIO-LATeRAL SIDe Of POSTeRIOR RAMUS BeARING cONIcAL SPINeS ALONG 3 DISTAL SeGMeNTS ( FIG. 21 View FIGURE 21 , B, D), WITH SeRRULATe SeTAe ( FIG. 21E View FIGURE 21 ). CIRRI IV–VI LONG, SLeNDeR RAMI Of SIMILAR LeNGTHS; cIRRUS IV, ANTeRIOR RAMUS18 SeGMeNTeD, POSTeRIOR RAMUS 19 SeGMeNTeD; cIRRUS V (20, 20); cIRRUS VI (21, 21) ( FIGS. 21F View FIGURE 21 , 22A, D View FIGURE22 ); ALL RAMI BeARING SeRRULATe AND SIMPLe SeTAe ( FIGS. 21G, H View FIGURE 21 , 22B, C, E, F View FIGURE22 ); INTeRMeDIATe SeGMeNTS Of RAMI Of CIRRI IV AND V BeARING 3 PAIRS Of LONG, SeRRULATe SeTAe AND 1 PAIR Of SIMPLe SeTAe ( FIGS. 21G, H View FIGURE 21 , 22B, E, F View FIGURE22 ), DISTAL PAIR LONGeST, PROXIMAL PAIR SHORTeST. PeNIS ANNULATeD, WITH ScATTeReD SHORT SIMPLe-TyPe SeTAe ( FIG. 22G View FIGURE22 ). PeDIceL WITH BLUNT BASIDORSAL POINT ( FIG. 22H View FIGURE22 ), APeX BeARING SHORT, SIMPLe SeTAe ( FIG. 22I View FIGURE22 ).

HABITAT. ON cORAL Goniastrea minuta

Distribution. AT PReSeNT, ONLy RecORDeD IN THe DONGSHA ATOLL, TAIWAN.

Etymology. Trevathana dongshaensis IS NAMeD fROM ITS TyPe LOcALITy, DONGSHA ATOLL, TAIWAN.

Remarks. Trevathana dongshaensis HAS AVeRy BROAD, INTeRLOcKING TOOTH ON ScUTUM, WHIcH IS SIMILAR TO THAT fOUND IN T. paulayi . Trevathana dongshaensis DIffeRS fROM T. paulayi By HAVING THe INTeRNAL TOOTH Of THe TeRGUM eXTeNDING BeyOND THe BASAL MARGIN.