Ambrysus vanduzeei Usinger, 1946

Reynoso-Velasco, Daniel & Sites, Robert W., 2018, Revision of the Ambrysus pulchellus Montandon species complex (Heteroptera: Nepomorpha: Naucoridae), Zootaxa 4442 (3), pp. 351-377 : 372-374

Ambrysus vanduzeei Usinger

( FIGs. 2 , 6 )

A. vanduzeei Usinger 1946 : Univ. Kans. Sci. Bull., 31: 207–209 (original description).

A. vanduzeei: De Carlo 1950 , An. Soc. Cient. Argent., 150: 13 (list of taxa, distribution).

A. vanduzeei: La Rivers 1953a , Univ. Kans. Sci. Bull., 35: 1284, 1308–1309, 1342–1343 (key, supplemental description, habitus photo).

A. vanduzeei: La Rivers 1958 , Proc. Ent. Soc. Wash., 60: 72 (morphology).

A. vanduzeei: La Rivers 1965 , Biol. Soc. Nev. Occas. Pap., 4: 7 (subgeneric assignment, distribution).

A. vanduzeei: La Rivers 1971 , Biol. Soc. Nev. Mem., 2: 69 (list of taxa).

Diagnosis. ThIs spEcIEs cAN bE dIsTINGuIshEd fROm ThE OThERs IN ThIs cOmpLEx by ThE fEmALEs wITh ThE pOsTERIOR mARGIN Of ThE SGP TApEREd TO A NARROwLy ROuNdEd ApEx ( FIG. 6F ). ThE LATERAL mARGINs ARE REfLExEd dORsAd, GIvING ThE SGP A sEmITubuLAR shApE. ALsO, ThE pOsTERIOR mARGIN Of LATEROsTERNITE VI Is ALmOsT sTRAIGhT ( FIG. 6F ). IN mALEs, ThE AGP Is cApITATE ANd wIdEsT AT ThE dIsTAL mARGIN ( FIG. 6B ). ThE psEudOpARAmEREs ARE sTRAIGhT mEsALLy (NO mEdIAL cONvExITy), wITh ThE pOsTEROmEsAL cORNER As AN INcONspIcuOus NARROwLy ROuNdEd LObE ( FIG. 6C ). ThE scuTELLum hAs A RENIfORm TO OvATE dARK bROwN mARK ON EAch sIdE Of ThE mIdLINE ( FIG. 6A ).

Discussion. ThIs spEcIEs wAs dEscRIbEd fROm A sERIEs Of spEcImENs cOLLEcTEd IN MuLEGé IN BAjA CALIfORNIA SuR, mOsT LIKELy IN ThE SANTA ROsALíA RIvER. BAsEd ON ThE uNIquE mORphOLOGy Of ThE fEmALE SGP, IT wAs cLEAR TO UsINGER ThAT ThIs wAs A dIsTINcT spEcIEs. IN ThIs wORK, UsINGER (1946) sTudIEd A TOTAL Of 20 spEcIEs, Of whIch 16 wERE dEscRIbEd As NEw spEcIEs. NOTwIThsTANdING ThE EvIdENcE, hE OvERLOOKEd ThE ImpORTANcE Of ThE SGP As A dIAGNOsTIc fEATuRE ANd dId NOT usE IT IN ThE dEscRIpTION Of ThE REmAINING spEcIEs. FOR LA RIvERs (1953A), ThIs uNIquELy shApEd SGP wAs sImILAR TO ThAT Of ThE SOuTh AmERIcAN ( BOLIvIA) spEcIEs A. ochraceus MONTANdON. HE spEcuLATEd ThAT ThIs TypE Of SGP cOuLd bE usEd TO INsERT EGGs INTO pLANT TIssuE OR dEpOsIT ThEm IN cREvIcEs, whIch wOuLd pREsumAbLy mAKE ThE EGGs LEss AccEssIbLE TO ExpLOITERs.

Variation. ThE LEfT dORsAL fLAp Of ThE mALE phALLOsOmA, whIch Is A dIAGNOsTIc chARAcTER Of ThE spEcIEs cOmpLEx, Is GENERALLy LEss dEvELOpEd ANd IN sOmE spEcImENs cAN bE INcONspIcuOus ( FIG. 6E ). ALsO, ThE dIsTAL pART Of ThE psEudOpARAmEREs cAN bE TApEREd TO A cONspIcuOus ROuNdEd ApIcAL LObE

Type locality. MéxIcO: BAjA CALIfORNIA SuR, MpIO. MuLEGé, MuLEGé.

Repository. HOLOTypE Is hOusEd AT ThE CAS.

Distribution. Ambrysus vanduzeei Is dIsTRIbuTEd ExcLusIvELy IN ThE BAjA CALIfORNIA PENINsuLA ( MExIcO), IN ThE BAjA CALIfORNIA ANd CALIfORNIA bIOGEOGRAphIc pROvINcEs ( FIG. 2 ). ThE pREvIOus dIsTRIbuTION REcORds fOR ThE spEcIEs cAmE fROm BAjA CALIfORNIA SuR; hEREIN, wE REpORT ThE fIRsT REcORds fROm ThE sTATE Of BAjA CALIfORNIA. ThE ONLy OThER

TwO spEcIEs Of Ambrysus pREsENT IN ThAT AREA ARE A. hungerfordi triunfo LA RIvERs ANd A. occidentalis LA RIvERs. Ambrysus vanduzeei wAs fOuNd syNTOpIcALLy wITh A. hungerfordi triunfo AT ARROyO AGuA CALIENTE (12-VII-2004), ARROyO LAs PARRAs (10-VII-2004), ANd ARROyO SAN JORGE (17-VII-2004) IN BAjA CALIfORNIA SuR.

Published records. MéxIcO: BAjA CALIfORNIA [SuR] ( UsINGER 1946; DE CARLO 1950; LA RIvERs 1953A, 1971).

Type material examined. HOLOTYPE ♂ (by ORIGINAL dEsIGNATION): [ MÉXICO]: Baja Cal [ifornia Sur : MpIO. MuLEGé], MuLEGE, MAy 14 1921 / E.P . VAN DuzEE COLLEcTOR / HOLOTYPE Ambrysus vanduzeei UsINGER / CALIfORNIA AcAdEmy Of ScIENcEs TypE NO. 7167 . PARATYPES: MuLEGE, BAjA CAL., MAy 14 1921 / E.P. VAN DuzEE COLLEcTOR / ALLOTYPE Ambrysus vanduzeei UsINGER / COLLEcTION Of ThE CALIfORNIA AcAdEmy Of ScIENcEs , SAN FRANCISCO, CALIF. (1♀ CAS); MULEGE BAjA CAL., MAY 14 1921 / E.P. VAN DUZEE COLLECTOR / PARATYPE Ambrysus vanduzeei UsINGER (2♀ EMEC).

Material examined. MÉXICO: Baja California: [MpIO. ENsENAdA], EL PROGREsO, SAN FERNANdO MIssION, 28 DECEMBER 1974, W.G. VOIGHT (5Ƌ, 1♀ EMEC); [MPIO. ENSENADA], ESTERO AT MOUTH ARROYO DEL ROSARIO, [NO COLLECTING DATE] / H.B. LEECH, P.H. ARNAUD, JR. COLLECTORS (9Ƌ, 4♀ CAS; 2Ƌ, 1♀ UMC); SAME BUT / Ambrysus vanduzeei USINGER DET. J.T. POLHEMUS 1968 (1♀ CAS); [MPIO. ENSENADA], ESTERO AT MOUTH ARROYO DEL ROSARIO, [NO COLLECTING DATE] / H.B. LEECH, P.H. ARNAUD, JR. COLLECTORS / C.J. DRAKE ACCESSION (6Ƌ, 3♀ USNM); [MPIO. ENsENAdA], EsTERO AT mOuTh ARROyO dEL ROsARIO, [NO cOLLEcTING dATE] / H.B. LEEch, P.H. ARNAud, JR. COLLEcTORs / Ambrysus vanduzeei USINGER DET. JTP (1Ƌ UMC); [MPIO. ENSENADA], ROSARIO, L. CALIF., VI-17-1938 / ROSS & MICHELBACHER COLLECTORS (1Ƌ, 1♀ CAS); [MPIO. ENSENADA], SAN FERNANDO, MISIóN SAN FERNANDO VELICATÁ, 2.5 RD. MI W EL PROGRESO, 8-VII-2004, COLL. C.B. BARR / 29°58.94'N 115°14.52'W, ELEVATION 1800 FT. (1Ƌ, 1♀ UMC; 6Ƌ, 6♀ EMEC); [MpIO. ENsENAdA], 2.5 mI W EL PROGREssO, 8 VII 2004, 1800 fT, ARROyO SAN FERNANdO, WDS.A.1592 / WILLIAM D. SHEPARD LEG. (36Ƌ, 32♀ EMEC); [MPIO. PLAYAS DE ROSARITO], 2.1 MI. S ROSARITO, III-23-1 981, F. ANDREwS & D. FAULKNER / COLLECTED IN MARSH POOLS (1♀ CSCA); [MPIO. PLAYAS DE ROSARITO], 2.2 MI. S ROSARITO, IX- 22-1981, D. FAULKNER & F. ANDREwS COLL. IN MARSH POOLS (3Ƌ, 1♀ CSCA); [MPIO. PLAYAS DE ROSARITO], 2.3 MI. S ROsARITO IV-14-1987, F. ANdREws & A. GILbERT pOOL IN sALINE mEAdOw (20♂, 28♀ CSCA). Baja California Sur: [MpIO. COmONdú], CIudAd CONsTITucIÓN, Km 24 A SAN JOsé dE COmONdú, 25-III-2011 26°00'19''N 111°52'02''W, 163M, MATORRAL xERóFILO, L. CERVANTES & C. MAYORGA (1Ƌ, 2♀ UMC); [MPIO. COMONDÚ, LA] PURISIMA, BAjA CALIF. MEx., VIII-8-51 / COLL. K. NORRIs / Ambrysus SP. (1♀ EMEC); [MPIO. COMONDÚ], LA PURISIMA CAñóN, N. COmONdú, B.C. MEx., LA R., 24-V-47 / Ambrysus vanduzeei USINGER 1946 (IRA LA RIVERS) (1♀ EMEC); [MPIO. COmONdú], LA PuRIsImA CAñÓN, NORTh Of COmONdú, LOwER CALIf., V-24-47 / I. LA RIvERs COLLEcTOR / Ambrysus vanduzeei USINGER DETERMINED BY IRA LA RIVERS 1948 (1Ƌ EMEC); [MPIO. COMONDÚ], LA PURÍSIMA CAñóN, 23 MI N Of COmONdú, 24-V-1947, IRA LA RIvERs, CAL.AcAd.ScI.COLL. / IRA LA RIvERs cOLLEcTION bEquEAThEd TO ThE CALIfORNIA ACADEMY OF SCIENCES -1978 (2Ƌ CAS); SAME BUT / Ambrysus vanduzeei USINGER 1946 (IRA LA RIVERS) (2Ƌ CAS); [MpIO. COmONdú], LA PuRísImA CAñÓN, 23 mI N Of COmONdú, 24-V-1947, IRA LA RIvERs, CAL.AcAd.ScI.COLL. / Ambrysus vanduzeei UsINGER dETERmINEd by IRA LA RIvERs 1948 / IRA LA RIvERs cOLLEcTION bEquEAThEd TO ThE CALIFORNIA ACADEMY OF SCIENCES -1978 (1Ƌ, 1♀ CAS); [MPIO.] COMONDÚ, LA PURÍSIMA, B.C., MEx. / LA RIVERS 24- V-47 / H.P. ChANdLER COLLEcTION/ Ambrysus vanduzeei USINGER 1946 (IRA LA RIVERS) (2Ƌ CAS); [MPIO. COMONDÚ], SAN LuIs GONzAGA, 22–23 MAy 1947, IRA LA RIvERs, CAL.AcAd.ScI.COLL. / Ambrysus vanduzeei UsINGER 1946 (IRA LA RIVERS) / IRA LA RIVERS COLLECTION BEqUEATHED TO THE CALIFORNIA ACADEMY OF SCIENCES -1978 (4Ƌ, 1♀ CAS); [MPIO. COmONdú], 20 mI. N. COmONdú, L. CAL., VII-23-38 / MIchELbAchER & ROss COLLEcTORs / Ambrysus vanduzeei USINGER 1946 (IRA LA RIVERS) (12Ƌ, 14♀ CAS); [MPIO. LA PAZ], ARROYO COLORADO, 2 MI. N. OF EL PILAR / 13-XI-1959 IRA L. WIGGINs COLLEcTOR / Ambrysus vanduzeei USINGER 1946 (IRA LA RIVERS) (19Ƌ, 2♀ CAS); [MPIO. LA PAZ], SAN HILARIO, EL[v]. 1000', XI-5-68, E.L. SLEEpER & F.J. MOORE / CALIfORNIA STATE UNIv., LONG BEAch, 1996 dONATION TO CALIF. ACAD. SCI. (5Ƌ CAS); [MPIO. LORETO], ARROYO LAS PARRAS AT CUEVAS PINTAS AREA, CA. 9 RD. MI. W OF LORETO 10-VII-2004, C.B. BARR / SIERRA DE LA GIGANTA 25°58.49'N 111°27.97'W, ELEVATION 750 FT. (1Ƌ, 1♀ UMC; 4Ƌ, 1♀ EMEC); [MpIO. LORETO], LAs PARRAs, SIERRA GIGANTE, JuNE 25 1988 / BAumAN, KIRschNER, KONdRATIEff, WELLs, WHITING (2♀ BYUC); [MPIO. LORETO], RANCHO CUEVAS PINTAS, 9 MI. W LORETO 900', 18 MAY 1969, S. C. WILLIAMS #201(1) (1Ƌ CAS); [MPIO. LORETO], 1 MI SW [EL] PALO BLANCO, EL[V]. 800', XI-8 /9-68, E.L. SLEEPER & F.J. MOORE / CALIFORNIA STATE UNIV., LONG BEACH, 1996 DONATION TO CALIF. ACAD. SCI. (12Ƌ, 6♀ CAS); [MPIO. LORETO], 1.6 MI S SAN JAVIER, 20 VII 2004, 1180 FT, ARROYO SAN JAVIER, WDS.A.1598 / WILLIAM D. SHEPARD LEG. (1Ƌ EMEC); [MPIO. LORETO], 4 mI. S. MIssION SAN JAvIER, ALT 1000', 19 MAy 1969, S.C. WILLIAms #202 / Ambrysus vanduzeei UsINGER DET. J.T. POLHEMUS (8Ƌ, 2♀ CAS); SAME BUT / C.J. DRAKE ACCESSION (1♀ USNM); [MPIO. LORETO], 4 MI. S MISSION SAN JAVIER, ALT. 1000', 19 MAY 1969, S.C. WILLIAMS #202 / C.J. DRAKE ACCESSION (3Ƌ, 1♀ USNM); [MPIO. LORETO], 9 MI WSW LORETO, 10 VII 2004, 680 FT, ARROYO LAS PARRAS / WILLIAM D. SHEPARD LEG. (6Ƌ, 3♀ EMEC); [MPIO. LORETO], [MPIO. LORETO], 10 MI. SW LORETO ON ROAD TO LA PAZ, 4-VIII-1966, RAYMOND BANDAR (1Ƌ CAS); 10 MI. W. LORETO, 4 APR. 1982, W.H. CROSS / POOLS IN ARROYO (1Ƌ, 1♀ UMC); [MPIO. LOS CABOS], AGUA CALIENTE, MEX. CAPE DIST., B.C., IV-22-1947, IRA LA RIVERS (1Ƌ EMEC); SAME BUT / Ambrysus vanduzeei UsINGER DET. J.T. POLhEmus (1♀ EMEC); SAME BUT / J.T. POLHEMUS COLLECTION / C.J. DRAKE ACCESSION (1♀ USNM); [MPIO. LOS CABOS], AGUA CALIENTE, CAPE DIST., IV-22-1947, IRA LA RIVERS / J.T. POLHEMUS COLLECTION / C.J. DRAKE ACCESSION (1Ƌ USNM); [MpIO. LOs CAbOs], ARROyO AGuA CALIENTE cA. 8 mI. SW SANTIAGO [ANd] 2 mI. W AGuA CALIENTE, 12-VII-2004, C.B. BARR (2♀ EMEC); [MPIO. LOS CABOS], BOCA DE LA SIERRA, 500', 8 MAY 1969, STANLEY C. WILLIAMS #192 (1) / Ambrysus vanduzeei USINGER DET. J.T. POLHEMUS (1♀ CAS); SAME BUT / C.J. DRAKE ACCESSION (1♀ USNM); [MPIO. LOS CABOS], REGIóN DE LOS CABOS, 14-IV-87, P. TENORIO (1♀ CNIN); [MPIO. LOS CABOS], 3 MI. N MIRAFLORES, BOCA DE LA SIERRA, 22 JUNE 1997, COLL: W.D. SHEPARD WDS-A-1260 (1Ƌ UMC); [MPIO. LOS CABOS], 3 MI W AGUA CALIENTE, 22 JUNE 1997, COLL: W.D. SHEPARD, RIO AGUA CALIENTE (2Ƌ UMC); [MPIO. LOS CABOS], 7 MI W SANTIAGO, 17 VII 2004, 900 FT, ARROYO SAN JORGE / WILLIAM D. SHEPARD, LEG. (4Ƌ, 3♀ EMEC); [MPIO. MULEGé], MULEGé, BAjA CAL., MAy 14 1921 / E.P. VAN DuzEE COLLEcTOR / Ambrysus vanduzeei USINGER 1946 (IRA LA RIVERS) (3Ƌ, 7♀ CAS); sAmE buT / Ambrysus hybridus MONTD. D.S.V. (1♀ CAS); [MPIO. MULEGé], MULEGé, BAjA CAL., MAY 14 1921 / E.P. VAN DuzEE COLLEcTOR / 61 / Ambrysus vanduzeei UsINGER 1946 (IRA LA RIvERs) (1? EMEC); [MpIO. MuLEGé], MuLEjé, BAjA CAL., MAy 14 1921 / E.P. VAN DuzEE COLLEcTOR / Ambrysus vanduzeei UsINGER dETERmINEd by IRA LA RIvERs 1948 (1Ƌ EMEC); [MPIO. MULEGé], MULEjé, BAjA CAL., MAY 14 1921 / E.P. VAN DUZEE COLLECTOR / Ambrysus vanduzeei USINGER DET. R.W. SITES 2011 (1♀ CNIN); [MPIO. MULEGé], MULEjé, BAjA CAL., MAY 14 1921 / E.P. VAN DuzEE cOLLEcTOR / Ambrysus hybridus (1♀ CNIN); [MPIO. MULEGé], SAN IGNACIO, 9 VII 2004, 780 FT, ARROYO SAN IGNACIO, WDS.A.1593 / WILLIAM D. SHEPARD LEG. (1♀ EMEC); [MPIO. MULEGé], II [ILLEGIBLE DATE, POSSIBLY 1 OR 7] 1960, D. PORTER / MuLEGuE [MuLEGé] / Ambrysus vanduzeei USINGER 1946 (IRA LA RIVERS) (1Ƌ, 2♀ CAS); PILAR (SAN LUIS), MAY 22 1947, IRA LA RIVERS / J.T. POLHEMUS COLLECTION / C.J. DRAKE ACCESSION (1Ƌ USNM); SAME BUT / Ambrysus vanduzeei UsINGER dET. J.T. POLhEmus (1♀ USNM).

Figures

FIGURE 2. Distribution of Ambrysus buenoi, A. californicus, and A. vanduzeei in North America.

FIGURE 6. Structures of Ambrysus vanduzeei. (A) dorsal habitus of male, (B) 6th and 7th abdominal terga of male, (C) 8th abdominal tergum of male, (D) ventral surface of phallosoma, (E) left side of phallososma, (F) sternum VI and subgenital plate of female (terminal abdominal segments removed). ldf = left dorsal flap. Size bar = 0.5 mm and applies only to figures D and E.