Ariosoma dolichopterum Karmovskaya, 2015

Smith, David G., Ho, Hsuan-Ching, Huang, Jian-Fu & Chang, Yong-Hsu, 2018, The congrid eel genus Ariosoma in Taiwan (Anguilliformes: Congridae), with description of a new species, Zootaxa 4454 (1), pp. 84-106 : 89

publication ID	https://doi.org/ 10.11646/zootaxa.4454.1.10
publication LSID	lsid:zoobank.org:pub:7ED1DA53-1743-4187-B051-B715914D9C1B
DOI	https://doi.org/10.5281/zenodo.5946500
persistent identifier	https://treatment.plazi.org/id/E16387C7-DC4A-FF90-FF15-0ECB4D0CF809
treatment provided by	Plazi
scientific name	Ariosoma dolichopterum Karmovskaya, 2015
status

Treatment

LONg-fIN SHORT-TAIL CONgER ; 長鰭錐體糯鰻

FIgS. 3B View FIGURE 3 , 4 View FIGURE 4 , 6 View FIGURE 6 ; TAbLE 1

Ariosoma dolichopterum KarmOvSkaya, 2015 :906, fIg. 1 (TyPE LOcaLITy: SOuTHErN VIET Nam).? Alloconger anagoides (NON BLEEkEr, 1853), IN ParT: JOrdaN & RIcHardSON, 1909:171. CHu, 1957:14. LEE & YaNg, 1966:54, fIg.

2. CHEN & WENg, 1967:45. CHEN, 1969: 132. CHEN & Yu, 1986:252. SHaO et al., 1994:274. Ariosoma anagoides (NON BLEEkEr, 1853): SHEN, 1998a:9.? SHaO et al., 2008:239.

Material examined. 32 SPEcIMENS, 105‒415 MM TL (*DETAILED MEASuREMENTS NOT TAkEN) . CAS 15596 (1, 328), CAS 15854 (2, 324‒327), DONg-gANg. NMMB-P1404 (fORMERLY THUP 3961, 1, 335), DONg-gANg, 21 MAR. 1979. NMMB-P3209 (5, 247‒330), TAINAN, 10 FEb. 1966 . NMMB-P3387 (1, 367), KAOHSIuNg, 7 FEb. 1966. NMMB- P3406 (1, 368), DONg-gANg, 1 Aug. 1965 . NMMB-P4541 (1, 325), PENgHu, 1 Aug. 1957 . NMMB-P8816 (5, 223‒373), PENgHu, 30 Aug. 2005 . NMMB-P8970 (1, 379), PENgHu, 27 OcT. 2005 . NMMB-P9020 (1, 380), PENgHu, 27 OcT. 2005 . NMMB-P11153 (1, 290), DAxI, ILAN, 12 OcT. 2010. NMMB-P21750 (2, 105‒139), PENgHu, 1 Aug. 1957 (DETAILED MEASuREMENTS NOT TAkEN) . NMMB-P22433 (1, 289), KE-Tzu-LIAO, 21 JAN. 2015. NMMB-P23477 (1, 415), KE-Tzu-LIAO, 5 JuL. 2016. NMMB-P23478 (1, 140), KE-Tzu-LIAO, 5 JuL. 2016 (DETAILED MEASuREMENTS NOT TAkEN). NMMB-P23713 (2, 248‒250), KE-Tzu-LIAO, 21 JAN. 2015. NSMT-P125309 (2, 232‒269), KE-Tzu-LIAO, 11 FEb. 2015. USNM 398799 (1, 349), NAN-fANg-AO, 18 NOV. 2009. USNM 437331 (2, 245‒340), KE-Tzu-LIAO, 16 OcT. 2015.

Diagnosis. BODY bROWN WITH cONSPIcuOuS bLAck MARgINS ON VERTIcAL fINS; fOuR WHITISH bANDS AcROSS DORSAL SuRfAcE Of HEAD; SNOuT RELATIVELY POINTED; PEcTORAL fIN VERY LONg, 40.0‒56.7% HL. PORES PRESENT bETWEEN AND bEHIND EYES. VERTEbRAE 129‒134.

Description. MORPHOMETRIc AND MERISTIc DATA PROVIDED IN TAbLE 1. BODY STOuT, ANuS SLIgHTLY bEfORE MIDLENgTH, DORSAL-fIN ORIgIN WELL bEfORE gILL OPENINg. JAWS MODERATELY LONg, uPPER jAW PROjEcTINg SLIgHTLY bEYOND TIP Of LOWER jAW, INTERMAxILLARY TEETH PARTLY cONcEALED WHEN MOuTH cLOSED. EYE WELL DEVELOPED, MIDDLE Of EYE OVER RIcTuS. SNOuT RELATIVELY POINTED.

TEETH SMALL, cONIcAL, MuLTISERIAL; MAxILLARY AND INTERMAxILLARY TEETH cONTINuOuS; MAxILLARY TEETH IN NARROW bANDS, TEETH SHARP ON OuTER ROW(S) AND bLuNT ON INNER ROW(S). VOMERINE TEETH SHARP ANTERIORLY fOLLOWED bY AbOuT 3 ROWS Of LARgER bLuNT TEETH, fORMINg A NARROW ELONgATE PATcH ENDINg bEHIND MIDPOINT Of MAxILLARY TOOTH PATcH.

BODY bROWN, OfTEN A DISTINcT bIcOLORED APPEARANcE, DISTINcTLY PALER bELOW THE LATERAL LINE; DORSAL AND ANAL fINS WITH VERY bROAD cONSPIcuOuS bLAck MARgIN, cAuDAL fIN WHITE WITH uPPER AND LOWER MARgINS bLAck. DORSAL SuRfAcE Of HEAD DARkER WITH fOuR WHITISH bANDS AcROSS LEVELS Of POSTERIOR NOSTRILS, ANTERIOR MARgIN Of EYES, SLIgHTLY POSTERIOR TO EYES, AND SuPERTEMPORAL cANAL; VENTRAL SuRfAcE Of HEAD WHITE WITH IRREguLAR bLAck PIgMENTED PATcHES.

MAxIMuM SIzE AT LEAST 415 MM TL. FEMALES APPEAR TO MATuRE AT AROuND 300 MM TL.

Distribution. KNOWN fROM THE SOuTH CHINA SEA Off VIETNAM AND AROuND TAIWAN.

Remarks. Ariosoma dolichopterum RESEMbLES A. anago IN HAVINg A POINTED SNOuT, DISTINcT DARk AND PALE bANDS ON THE HEAD, AND cONSPIcuOuS bLAck MARgINS ON THE VERTIcAL fINS. IT DIffERS IN HAVINg fEWER VERTEbRAE (129‒134 VS. 143‒144) AND A LONgER PEcTORAL fIN (40.0‒56.7% VS 30.4‒34.6 % HL). FROM THE SPEcIMENS INITIALLY IDENTIfIED AS THIS SPEcIES, WE SEPARATED ANOTHER SPEcIES, A. emmae sp. nov. SEE DETAILED cOMPARISON bELOW.

Ariosoma dolichopterum APPEARS TO bE MORE cOMMON IN SOuTHERN TAIWAN THAN THE SIMILAR A. anago . IT IS POSSIbLE THAT SOME Of THE EARLIER REfERENcES TO A. anago IDES (NOW A. anago ) REfER AT LEAST IN PART TO THIS SPEcIES.