Conopleura latiaxisa Chino, 2011

Nappo, Andrea, Rey, Xabier, Pellegrini, Daniel, Bonomolo, Giuseppe & Crocetta, Fabio, 2018, Revisiting the disjunct distribution of Conopleura Hinds, 1844 (Mollusca: Gastropoda: Drilliidae), Zootaxa 4392 (3), pp. 567-587 : 573-576

publication ID

https://doi.org/ 10.11646/zootaxa.4392.3.7

publication LSID

lsid:zoobank.org:pub:1DC5056D-5CF3-4A73-8D79-73C4EE0CF2BA

DOI

https://doi.org/10.5281/zenodo.5963594

persistent identifier

https://treatment.plazi.org/id/0384F547-FF81-FFA1-FF6E-FC66FB223E21

treatment provided by

Plazi

scientific name

Conopleura latiaxisa Chino, 2011
status

 

Conopleura latiaxisa Chino, 2011 View in CoL

Type locality: Central Indo-Pacific. Off PuNTA ENgAñO (MAcTAN ISLANd, PHILIPPINES, PAcIfIc OcEAN), bETwEEN 180– 250 m dEPTH ( FIg. 1C1 View FIGURE 1 ).

Material examined: Central Indo-Pacific. Off PuNTA ENgAñO (MAcTAN ISLANd, PHILIPPINES), 220–240 m— HOLOTyPE—1 SH—10.6×4.8 ( NSMT-MO. 77385) ( FIg. 1C1 View FIGURE 1 , 3M–O View FIGURE 3 ; APPENdIx 1: FIg. 1B View FIGURE 1 ); 180–250 m—PARATyPE 1—1 SH—10.8×5.1 (MNHN-IM-2000-24228) ( FIg. 1C1 View FIGURE 1 ); PARATyPE 2—1 SH—9.6×4.5 (NMP- 041235) ( FIg. 1C1 View FIGURE 1 ); PARATyPE 3—1 SH—10.4×4.8 ( KBIN. RBINS COLLEcTION, I.G. 32067, MT. 2600) ( FIg. 1C1 View FIGURE 1 ); PARATyPE 4—1 SH— 11.4×5.2 (MC PRIVATE cOLLEcTION) ( FIg. 1C1 View FIGURE 1 ); PARATyPE 5—1 SH—10.5×4.9 ( NSMT-MO. 77386) ( FIg. 1C1 View FIGURE 1 ); PARATyPE 6—1 SH—10.1×5.0 ( ANSP 455651) ( FIg. 1C1 View FIGURE 1 ); PARATyPE 7—1 SH—9.7×4.8 (CI # 622802) ( FIg. 1C1 View FIGURE 1 ); PARATyPE 8—1 SH—11.9×5.7 (CI # 619117) ( FIg. 1C1 View FIGURE 1 ). Temperate northern Pacific. TOkASHIkI ISLANd (OkINAwA, JAPAN), 1991, 110 m—1 SH—3.4×2 (MC) ( FIg. 1C View FIGURE 1 2 View FIGURE 2 ). Central Indo-Pacific. Off PuNTA ENgAñO (MAcTAN ISLANd, PHILIPPINES), 2011, TRAwLEd 150–250 m—1 SH—10.7×5* (AN) ( FIg. 1C1 View FIGURE 1 ); 180–250 m—1 SH—9×4.6* (AN) ( FIg. 1C1 View FIGURE 1 ); 10/06/2013, 220 m—2 SH—11.1×5.1*, 10×5* (AN) ( FIg. 1C1 View FIGURE 1 ); 11/2015, 100 m—2 SH—9.8×4.8*, 9.9×4.9* (AN) ( FIg. 1C1 View FIGURE 1 ); 12/2015, TRAwLEd 200 m—1 SH—10.4×5.2* (AN) ( FIg. 1C1 View FIGURE 1 , 2B View FIGURE 2 ). Off CORAL POINT (MAcTAN ISLANd, PHILIPPINES), 2001, 100–200 m—1 SH—10.8×4.9* (AN) ( FIg. 1C1 View FIGURE 1 , 3P–U View FIGURE 3 ). MAcTAN ISLANd, PHILIPPINES, 2009, 220 m—1 SH—11.0×4.9* (AN) ( FIg. 1C1 View FIGURE 1 ). Off MALINgIN ISLANd ( PHILIPPINES), 2012, 180–250 m—1 SH—10.1×4.4* (AN) ( FIg. 1C View FIGURE 1 3, 3V –Z View FIGURE 3 ).

Known distribution and bathymetric range: ONLy kNOwN fROm TyPE LOcALITy ANd NEARby AREAS, wHERE SHELLS wERE REPORTEd fROm 100–250 m dEPTH . Central Indo-Pacific. PHILIPPINES ( CHINO 2011 : MAcTAN ISLANd; PRESENT PAPER) ( FIg. 1C1, 1C View FIGURE 1 3 View FIGURE 3 ). Temperate northern Pacific . JAPAN ( PRESENT PAPER) ( FIg. 1C View FIGURE 1 2 View FIGURE 2 ).

Description: SPEcIES wITH A SmALL SHELL, SOLId, SLENdER ANd bIcONIcAL, wITH AcumINATE-ELONgATE SPIRE, Of ~ 12 mm mAxImum HEIgHT ANd 8–9 wHORLS IN LARgE-SIzEd SPEcImENS ( FIg. 3M–Q View FIGURE 3 ). SHELL cOLOuR ALmOST wHITISH, SOmETImES wITH A mARgINAL LIgHT bROwNISH TINgE ON dORSAL SIdE Of LAST wHORL ( FIg. 3M–Q View FIGURE 3 ). PROTOcONcH Of ~2.25 wHORLS, SEmI-TRANSLucENT wHITISH, SmOOTH ( FIg. 3V –Z View FIGURE 3 ). APEx dEPRESSEd, SEcONd ANd THIRd wHORLS SLIgHTLy cONVEx ( FIg. 3V –Z View FIGURE 3 ). TELEOcONcH Of 5–6 cONVEx wHORLS AT mATuRITy, INcREASINg IN dIAmETER uP TO LAST wHORL, cONSTITuTINg AROuNd HALf Of TOTAL SHELL HEIgHT ANd SIgNIfIcANTLy ExPANdEd AT SHOuLdER ANd SubSEquENTLy NARROwINg ( FIg. 3M–Q View FIGURE 3 ). SuTuRE dISTINcT, SLIgHTLy INcISEd wITH A SuLcuS, SHOuLdER dEEPLy cORONATE, wITH wELL-dEVELOPEd TRIgONAL LObATE SPINES, Table 1. Comparative table of main morphologic features of taxa currently ascribed to the genus Conopleura Hinds, 1844 (data amended from literature and present paper).

Conopleura striata Conopleura latiaxisa Conopleura aliena

Figures Fig. 3A View FIGURE 3 ̅L Fig. 3M View FIGURE 3 ̅Z Fig. 4A View FIGURE 4 ̅H, 4W False umbilicus present present absent Aperture

ga: narrow, sinuous, and axially ga: narrow, sinuous, and axially

ga: general aspect ga: wide and oval

elongated elongated

cl: slightly expanded callus, no cl: slightly expanded callus, no cl: slightly expanded callus, cl: columellar edge columellar rib columellar rib evident columellar rib ol: outer lip ol: stromboid notch present ol: stromboid notch present ol: stromboid notch absent as: anal sinus as: present as: present as: present Animal general color pattern whitish with dark maculae unknown unknown Distribution Fig. 1B View FIGURE 1 : Indo - Pacific Fig. 1C View FIGURE 1 : Pacific Ocean Fig. 1D View FIGURE 1 : Mediterranean Depth range (in m) based on shells 13̅250 100̅250 105̅350 REcuRVEd TOwARdS APEx, uNdERLyINg TRIgONAL AcumINATE-ELONgATE SPINES fROm PREVIOuS wHORLS ANd gIVINg AN uNduLATINg APPEARANcE TO SHELLS ( FIg. 3M–Q, 3S View FIGURE 3 ). SHOuLdER SuLcuS mAdE Of A SERIES Of dEEP cuRVEd SEPTA SEPARATEd by RAdIATINg LAmELLAE ORIgINATINg fROm ANAL SINuS ( FIg. 3R View FIGURE 3 ). AxIAL ScuLPTuRE fINE, POSSIbLy cONSTITuTEd by SEVERAL SubSEquENT gROwTH LINES ( FIg. 3M–Q View FIGURE 3 ). SPIRAL ScuLPTuRE IN THE cONVEx PART Of wHORL cONSISTINg Of 17–18 STRONg PRImARy cORdS, OfTEN fLExuOuS wHEN cROSSINg gROwTH LINES ( FIg. 3M–Q View FIGURE 3 ). APERTuRE NARROw, SINuOuS ANd AxIALLy ELONgATEd, uNIfORmLy wHITISH-yELLOwISH ( FIg. 3M, 3P View FIGURE 3 ). SLIgHT fALSE umbILIcuS PRESENT ( FIg. 3U View FIGURE 3 ). COLumELLAR EdgE wITH SLIgHTLy ExPANdEd cALLuS ( FIg. 3U View FIGURE 3 ). OuTER LIP THIN wITH STROmbOId NOTcH ( FIg. 3Q View FIGURE 3 ). ANAL SINuS dEEP, THIN, U- SHAPEd, cLOSE TO SuTuRE ( FIg. 3M–N, 3P–Q View FIGURE 3 ). SIPHONAL cANAL THIck, SHORT ANd bROAd ( FIg. 3M, 3P View FIGURE 3 ). ANATOmy, RAduLA, ANImAL cOLOuR ANd OPERcuLum uNkNOwN.

Remarks: THE dIffERENcES IN SHELL mORPHOmETRy Of C. latiaxisa ANd THOSE Of SPEcIES REPORTEd AS cONgENERIc IN THE cuRRENT LITERATuRE ARE SHOwN IN TAbLE 1, wHERE THE ONLy mAjOR AmENdmENT ON THIS TAxON wITH RESPEcT TO THE ORIgINAL dEScRIPTION REgARdS PROTOcONcH wHORLS. CHINO (2011), IN fAcT, ORIgINALLy SuggESTEd THAT C. latiaxisa HAS 1.5 PROTOcONcH wHORLS, wHILE ALL SHELLS THAT wE ExAmINEd, INcLudINg THOSE cONSTITuTINg THE TyPE mATERIAL, HAVE AbOuT 2.25 PROTOcONcH wHORLS. THIS ASSumPTION mAy bE PRESumAbLy bASEd ON A TyPO IN THE ORIgINAL dEScRIPTION (fOR 2.5 wHORLS). IN AddITION, wE HIgHLIgHT THAT THE ELONgATEd SHAPE Of C. latiaxisa SHELLS mAkES THIS SPEcIES SLIgHTLy SImILAR TO TAxA AScRIbEd TO OTHER DRILLIIDAE gENERA. HOwEVER, SPEcIES wITHIN THIS fAmILy ALwAyS PROducE SHELLS wITH A REducEd SPIRAL ScuLPTuRE THAT LAck THE TyPIcAL Conopleura HONEy-cOmb PITTINg. THEREfORE, THIS SuggESTS THAT C. latiaxisa bELONgS TO THE gENuS TO wHIcH IT HAS bEEN ORIgINALLy ASSIgNEd (CHINO 2011; TAbLE 1).

RBINS

Royal Belgian Institute of Natural Sciences

ANSP

Academy of Natural Sciences of Philadelphia

Kingdom

Animalia

Phylum

Mollusca

Class

Gastropoda

Order

Neogastropoda

Family

Drilliidae

Genus

Conopleura

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