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Helochares lividus (Forster, 1771) Material. 18 AdUlT SpEcImEnS. COllEcTEd On 03/x/2012. "LAgOA dO CAIAdO"���PIcO ISlAnd. UTM: 26 S 390945 4257289; OnE AdUlT SpEcImEn. 20/Ix/2012. "LAgOA dO CAldEIr��O GrAndE"���S��O MIgUEl ISlAnd. UTM: 26 S 610277 4186665. Habitat. Helochares lividus IS WIdESprEAd And lOcAllY AbUndAnT In nATUrAl pOndS, ESpEcIAllY In pOndS rIch In SIlTY SUbSTrATES (RIbErA et al. 1996b And DEnTOn 2013). ThE SpEcIES cAn AlSO bE fOUnd In ArTIfIcIAl EnVIrOnmEnTS SUch AS dITchES Or ArTIfIcIAl pOndS (DOnISThOrpE 1913; PIcAzO et al. 2010). Azorean habitat. ThE SpEcIES hAS bEEn dETEcTEd In A lArgE VArIETY Of hAbITATS And EnVIrOnmEnTAl cOndITIOnS. IT hAS bEEn rEgISTErEd In TEmpOrArY And pErmAnEnT pOndS, lAkES And ArTIfIcIAl TAnk-WATEr, lOcATEd In nATIVE fOrEST And In ArEAS clOSE TO pASTUrElAndS, frOm 387 TO 912 m. A.S.l. ThE AQUATIc SYSTEmS hAd pH VAlUES rAngIng frOm 4.9 TO 9.9, ThE dISSOlVEd OxYgEn cOncEnTrATIOn rAngEd frOm 4.2 TO 10.7 10.7 mg L���1, WhIlE ThE ElEcTrIc cOndUcTIVITY prESEnTEd lOW VAlUES (frOm 28.8 TO 79.5 ��S cm���1). World distribution. ThIS SpEcIES hAS A WESTErn PAlEArcTIc dISTrIbUTIOn. IT IS prESEnT In EUrOpE, ASIA And NOrTh AfrIcA (GArrIdO-GOnz��lEz et al. 1996; HAnSEn 1996; HAnSEn 2004; KArAmAn et al. 2008). Azores distribution. ThE SpEcIES hAd OnlY bEEn prEVIOUSlY rEcOrdEd In TErcEIrA ISlAnd. WITh ThIS nEW rEcOrd, ThE ArEA Of dISTrIbUTIOn In ThE AzOrES ISlAndS ExpAndS TO PIcO And S��O MIgUEl ISlAndS (SEE FIg. 1)., Published as part of Lamelas-L��pez, Lucas, Raposeiro, Pedro Miguel, Borges, Paulo A. V. & Florencio, Margarita, 2017, Annotated checklist of aquatic beetles (Coleoptera) and true bugs (Heteroptera) in the Azores Islands: new records and corrections of colonization status, pp. 117-132 in Zootaxa 4353 (1) on pages 124-125, DOI: 10.11646/zootaxa.4353.1.7, http://zenodo.org/record/1064562

Anisops sardeus Herrich-Schaeffer, 1849 Material. OnE jUVEnIlE. COllEcTEd On 20/VIII/2014. "LAgOInhA dA SErrETA" - TErcEIrA ISlAnd. UTM: 26 S 471127 4289052. Habitat. Anisops sardeus InhAbITS SEVErAl AQUATIc hAbITATS, InclUdIng pOndS And lAkES, TEmpOrArY Or pErmAnEnT, frEShWATEr, brAckISh Or SAlT WATErS WITh prESEncE Of AQUATIc VEgETATIOn (BrOOkS 1951; BArrY 1997; LAhr et al. 1999). ThE SpEcIES IS AlSO cOmmOnlY fOUnd In cATTlE TAnkS (AbEll��n et al. 2004). Azorean habitat. WE cOllEcTEd A SInglE SpEcImEn In A pErmAnEnT pOnd lOcATEd In A hIgh-ElEVATIOn nATIVE fOrEST (767 m. A.S.l). ThIS pOnd IS chArAcTErIzEd bY SlIghTlY AcIdIc WATEr ExhIbITIng A pH VAlUE Of 5.5; ThE WATEr ElEcTrIc cOndUcTIVITY WAS 47.8 ��S cm���1, And ThE dISSOlVEd OxYgEn cOncEnTrATIOn WAS 7.6 mg L���1. World distribution. ThIS SpEcIES hAS A WIdESprEAd dISTrIbUTIOn. IT IS prESEnT In MEdITErrAnEAn EUrOpE, NOrTh AfrIcA And MIddlE EAST (BrOOkS 1951; POlhEmUS 1996; KlEmEnTOV�� & SVITOk 2014). Azorean distribution. AzOrES IS ThE WESTErnmOST dISTrIbUTIOn Of ThIS SpEcIES. ITS prESEncE hAd bEEn prEVIOUSlY rEgISTErEd In ThE AzOrES bUT WIThOUT A rEfErEncE TO AnY SpEcIfIc ISlAnd (ZImmErmAnn 1984)., Published as part of Lamelas-L��pez, Lucas, Raposeiro, Pedro Miguel, Borges, Paulo A. V. & Florencio, Margarita, 2017, Annotated checklist of aquatic beetles (Coleoptera) and true bugs (Heteroptera) in the Azores Islands: new records and corrections of colonization status, pp. 117-132 in Zootaxa 4353 (1) on pages 122-123, DOI: 10.11646/zootaxa.4353.1.7, http://zenodo.org/record/1064562

Hygrotus confluens (Fabricius, 1787) Material. OnE AdUlT SpEcImEn. COllEcTEd On 15/V/2014. ArTIfIcIAl TAnk-WATEr - TErcEIrA ISlAnd. UTM: 26 S 471955 4289511; ThrEE AdUlTS And OnE lArVA. 16/V/2014. ArTIfIcIAl TAnk-WATEr - TErcEIrA ISlAnd. UTM: 26 S 476038 4287687; OnE lArVA. 16/V/2014. ArTIfIcIAl TAnk-WATEr - TErcEIrA ISlAnd. UTM: 26 S 476465 4287767; OnE AdUlT And OnE lArVA. 23/V/2014. ArTIfIcIAl TAnk-WATEr - TErcEIrA ISlAnd. UTM: 26 S 481296 4285624; TWO SpEcImEnS. COllEcTEd bY IgnAcIO RIbErA. 03/Ix/2012. " CASAS dA FAlcA" - TErcEIrA ISlAnd. UTM: 26 S 475521 4286501; 11 SpEcImEnS. COllEcTEd bY IgnAcIO RIbErA. 03/Ix/2012. "LAgOA dO GInjAl" - TErcEIrA ISlAnd. 26 S 486263 4282967. Habitat. Hygrotus confluens IS USUAllY fOUnd In pErmAnEnT pOndS WITh mInErAlIzEd WATErS And In TEmpOrArY ShAllOW pOndS, WITh SpArSE AQUATIc VEgETATIOn. ThE SpEcIES IS AlSO frEQUEnTlY fOUnd In SmAll ArTIfIcIAl pOndS (PIcAzO et al. 2010) And In ThE cATTlE TAnkS (RIbErA & AgUIlErA 1995; RIbErA et al. 1996A). Azorean habitat. ThE SpEcIES hAS bEEn fOUnd In hAbITATS ASSOcIATEd WITh hUmAn AcTIVITIES, lIkE ArTIfIcIAl TAnk- WATEr lOcATEd In mEdIUm-hIgh AlTITUdE (498- 793 m.A.S.l.) WITh bASIc WATErS (pH VAlUES rAngIng frOm 9.9 TO 10.3), dISSOlVEd OxYgEn cOncEnTrATIOnS rAngIng frOm 7.8 TO 11.2 mg L���1 And ElEcTrIc cOndUcTIVITY rAngIng frOm 50 TO 112 ��S cm���1). ThE SpEcIES hAS AlSO bEEn dETEcTEd In A dITch In An AgrO-fOrESTrY ArEA AT 550 m. A.S.l. And In An AnThrOpOgEnIc dISTUrbEd pOnd, In InTEnSIVElY mAnAgEd pASTUrElAnd AT 390 m. A.S.l. And ExhIbITIng lArgE cOVEr Of AQUATIc VEgETATIOn (mAInlY Potamogeton Spp.). World distribution. EUrOpE, ASIA And NOrTh AfrIcA (FErY 2003). Azorean distribution. ThE SpEcIES IS prESEnT In S��O MIgUEl, SAnTA MArIA And fOr ThE fIrST TImE IS rEcOrdEd fOr TErcEIrA ISlAnd (SEE FIg. 1)., Published as part of Lamelas-L��pez, Lucas, Raposeiro, Pedro Miguel, Borges, Paulo A. V. & Florencio, Margarita, 2017, Annotated checklist of aquatic beetles (Coleoptera) and true bugs (Heteroptera) in the Azores Islands: new records and corrections of colonization status, pp. 117-132 in Zootaxa 4353 (1) on page 123, DOI: 10.11646/zootaxa.4353.1.7, http://zenodo.org/record/1064562

Enochrus fuscipennis (Thomson, 1884) Material. OnE AdUlT SpEcImEn. COllEcTEd On 15/V/2014. ArTIfIcIAl TAnk-WATEr - TErcEIrA ISlAnd. UTM: 26 S 471955 4289511; fIVE AdUlT SpEcImEnS. 21/V/2014. "LAgOA dAS PATAS " - TErcEIrA ISlAnd. UTM: 26 S 478548 4287528; 13 AdUlT SpEcImEnS. 23/V/2014. "LAgOA dO PIcO dO ArEEIrO" - TErcEIrA ISlAnd. UTM: 26 S 483574 4285357; FOUr AdUlT SpEcImEnS. 03/x/2012. "LAgOA dO CAIAdO" - PIcO ISlAnd. UTM: 26 S 390945 4257289; ThrEE SpEcImEnS. COllEcTEd bY IgnAcIO RIbErA. 03/Ix/2012. "LAgOA dO NEgrO" - TErcEIrA ISlAnd. UTM: 26 S 476639 4287739. Habitat. ThIS SpEcIES IS cOmmOnlY fOUnd In pOndS And OThEr AQUATIc hAbITATS (BIlTOn et al. 2009), SUch AS nATUrAl pOndS ASSOcIATEd WITh SmAll And cOnTInUOUS SUrfAcE drAInAgE SYSTEmS (PIcAzO et al. 2010). IT IS AlSO prESEnT In STrEAmS (P��rEz-BIlbAO et al. 2010) And STAgnAnT WATErS rIch In OrgAnIc mATTEr (VAllAdArES 1995). E. fuscipennis IS A cOmmOn SpEcIES In TEmpOrArY pOndS In ThE MEdITErrAnEAn rEgIOnS. ThESE pOndS USUAllY ExhIbIT lOW ElEcTrIc cOndUcTIVITY VAlUES (55.0 ��S cm���1) And lArgE cOVEr Of EmErgEnT VEgETATIOn (ArOUnd 86%). ThIS SpEcIES hAS bEEn AlSO fOUnd In pErmAnEnT pOndS WITh hIghEr VAlUES Of ElEcTrIc cOndUcTIVITY (485.9 ��S cm���1) And A mEdIUm cOVEr Of EmErgEnT VEgETATIOn (ArOUnd 62%) (P��rEz-BIlbAO et al. 2014). Azorean habitat. ThIS SpEcIES hAS bEEn rEgISTErEd In SEVErAl AQUATIc SYSTEmS, (I) In nATUrAl pOndS WITh lOW cOVEr Of EmErgEnT VEgETATIOn (25-50%) lOcATEd AT mEdIUm AlTITUdE (bETWEEn 448 TO 553 m. A.S.l.), pH VAlUES rAngIng frOm 5.2 TO 6.9, lOW VAlUES Of ElEcTrIc cOndUcTIVITY (frOm 37.9 TO 49.5 ��S cm���1) And dISSOlVEd OxYgEn cOncEnTrATIOn Of 7.1 mg L���1; (II) In A dISTUrbEd pOnd WITh SlIghTlY AcId WATErS (pH VAlUE 5.6), lOW ElEcTrIc cOndUcTIVITY (38.8 ��S cm���1) And dISSOlVEd OxYgEn cOncEnTrATIOn Of 7.1 mg L���1; (III) And In ArTIfIcIAl TAnk-WATEr AT hIgh AlTITUdE (736 m. A.S.l.), WITh bASIc WATErS (pH VAlUE 9.9), lOW ElEcTrIc cOndUcTIVITY (60.5 ��S cm���1) And dISSOlVEd OxYgEn cOncEnTrATIOn Of 10.7 mg L���1. World distribution. Enochrus fuscipennis hAS A WESTErn PAlEArcTIc dISTrIbUTIOn, OccUpYIng EUrOpE, NEAr EAST And CEnTrAl ASIA (VAllAdArES 1995; HAnSEn 2004). Azorean distribution. ThIS SpEcIES hAd nOT bEEn cITEd fOr ThE AzOrES. OUr nEW rEcOrdS cOnfIrm ITS prESEncE In TErcEIrA And PIcO ISlAndS, AS WEll AS fOr ThE fIrST TImE In ThE AzOrES ArchIpElAgO (SEE FIg. 1)., Published as part of Lamelas-L��pez, Lucas, Raposeiro, Pedro Miguel, Borges, Paulo A. V. & Florencio, Margarita, 2017, Annotated checklist of aquatic beetles (Coleoptera) and true bugs (Heteroptera) in the Azores Islands: new records and corrections of colonization status, pp. 117-132 in Zootaxa 4353 (1) on page 124, DOI: 10.11646/zootaxa.4353.1.7, http://zenodo.org/record/1064562

Ochthebius freyi d���Orchymont, 1940 Material. SIx SpEcImEnS. COllEcTEd bY IgnAcIO RIbErA. 04/Ix/2012. ROckpOOlS In S��O PEdrO- TErcEIrA ISlAnd. UTM: 26 S 479719 4278623. Habitat. ROck pOOlS (ISrAElSOn 1984). IT mAY AlSO bE fOUnd In TErrESTrIAl EnVIrOnmEnTS clOSE TO ThE cOASTlInE (SVEnSSOn 1973). World distribution. Ochthebius freyi IS An EndEmIc SpEcIES In ThE AzOrES ArchIpElAgO. Azores distribution. FlOrES, FAIAl And S��O MIgUEl ISlAndS. OUr nEW rEcOrdS cOnfIrm ITS prESEncE In TErcEIrA ISlAnd (SEE FIg. 1)., Published as part of Lamelas-L��pez, Lucas, Raposeiro, Pedro Miguel, Borges, Paulo A. V. & Florencio, Margarita, 2017, Annotated checklist of aquatic beetles (Coleoptera) and true bugs (Heteroptera) in the Azores Islands: new records and corrections of colonization status, pp. 117-132 in Zootaxa 4353 (1) on page 125, DOI: 10.11646/zootaxa.4353.1.7, http://zenodo.org/record/1064562

Agabus bipustulatus (Linnaeus, 1767) Material. OnE AdUlT SpEcImEn And TWO lArVAE. COllEcTEd On 13/VII/2011. "CAldEIr��O" - COrVO ISlAnd. UTM: 25 S 662065 4397306. Habitat. ThIS SpEcIES IS A cOmmOn SpEcIES InhAbITIng A lArgE VArIETY Of AQUATIc hAbITATS InclUdIng SmAll rIVErS, pOndS, lAkES And EnVIrOnmEnTS WITh pEbblY dEpThS, SIlT And mArgInAl VEgETATIOn. ThIS TAxOn AlSO InhAbITS TEmpOrArY pOndS And hUmAn-mAdE rESErVOIrS (FrIdAY 1988; DOnISThOrpE 1913; PIcAzO et al. 2010; DrOTz et al. 2012). Azorean habitat. ThIS SpEcIES hAS bEEn fOUnd In pErmAnEnT And TEmpOrArY pOndS, frEQUEnTlY lOcATEd In mEdIUm-hIgh AlTITUdES (bETWEEn 500 TO 912 m. A.S.l.), AlThOUgh IT hAS AlSO bEEn ObSErVEd In lOW AlTITUdES (390 m. A.S.l. "CAldEIr��O - COrVO) And In cATTlE TAnkS. A. bipustulatus USUAllY OccUrS In AcIdIc WATErS (pH VAlUES rAngIng frOm 4.4 TO 7.1) And OxYgEnATEd WATErS (dISSOlVEd OxYgEn cOncEnTrATIOn VAlUES rAngIng frOm 6.7 TO 8.1 mg L���1). World distribution. Agabus bipustulatus hAS A PAlEArcTIc dISTrIbUTIOn. WIdESprEAd And ExTEndEd In EUrOpE, NOrTh AfrIcA And SOmE rEgIOnS Of AfrIcA (SErrAnO & BOrgES 1987; DrOTz et al. 2003; DrOTz et al. 2012). Azorean distribution. AzOrES IS ThE WESTErnmOST ArEA In ThE dISTrIbUTIOnAl rAngE Of ThIS SpEcIES. IT IS prESEnT In FlOrES, PIcO, S��O JOrgE And TErcEIrA ISlAndS. OUr nEW rEcOrd cOnfIrmS ThE prESEncE In COrVO ISlAnd (SEE FIg. 1)., Published as part of Lamelas-L��pez, Lucas, Raposeiro, Pedro Miguel, Borges, Paulo A. V. & Florencio, Margarita, 2017, Annotated checklist of aquatic beetles (Coleoptera) and true bugs (Heteroptera) in the Azores Islands: new records and corrections of colonization status, pp. 117-132 in Zootaxa 4353 (1) on page 123, DOI: 10.11646/zootaxa.4353.1.7, http://zenodo.org/record/1064562

Gyrinus distinctus Aub��, 1836 Material. FIVE AdUlT SpEcImEnS And OnE lArVA. COllEcTEd On 23/V/2014. "LAgOA FUndA" - TErcEIrA ISlAnd. UTM: 26 S 472391 4287599. Habitat. Gyrinus distinctus InhAbITS In lAkES (FrIdAY 1988), cOASTAl ArEAS Of ThE rESErVOIrS And In SlOW-mOVIng rIVErS, In frESh Or brAckISh WATErS (SVEnSSOn 1977; KıYAk et al. 2006). DUE TO ITS AbIlITY TO flY, ThE SpEcIES cAn dISpErSE TO OThEr pOndS WhEn ThE OrIgInAl hAbITATS drY OUT (DOnISThOrpE 1913). Azorean habitat. WE hAVE fOUnd ThIS SpEcIES OnlY In "LAgOA FUndA", WhIch IS A frEShWATEr pErmAnEnT pOnd nEAr TO nATIVE VEgETATIOn pATchES, In ThE "RESErVA NATUrAl InTEgrAl dE SAnTA B��rbArA", ApprOxImATElY AT 850 m. A.S.l. ThIS pOnd hAd AcIdIc WATErS (pH VAlUE Of 5.5), WATEr ElEcTrIc cOndUcTIVITY Of 28.0 ��S cm���1 And dISSOlVEd OxYgEn cOncEnTrATIOn Of 8.3 mg L���1. World distribution. ThIS SpEcIES IS WIdESprEAd And dISTrIbUTEd In EUrOpE, ASIA And RUSSIA (ZAITSEV 1972; BrInck 1978; FrAncIScOlO 1979; GUEOrgUIEV 1981; HOlmEn 1987). Azorean distribution. ThIS SpEcIES hAS bEEn dETEcTEd In ThE S��O MIgUEl, SAnTA MArIA, PIcO, FAIAl And FlOrES ISlAndS. ThE nEW rEcOrd cOnfIrmS ThE prESEncE In TErcEIrA ISlAnd (SEE FIg. 1)., Published as part of Lamelas-L��pez, Lucas, Raposeiro, Pedro Miguel, Borges, Paulo A. V. & Florencio, Margarita, 2017, Annotated checklist of aquatic beetles (Coleoptera) and true bugs (Heteroptera) in the Azores Islands: new records and corrections of colonization status, pp. 117-132 in Zootaxa 4353 (1) on page 124, DOI: 10.11646/zootaxa.4353.1.7, http://zenodo.org/record/1064562