Annotated checklist of aquatic beetles (Coleoptera) and true bugs (Heteroptera) in the Azores Islands: new records and corrections of colonization status Author Lamelas-López, Lucas Author Raposeiro, Pedro Miguel Author Borges, Paulo A. V. Author Florencio, Margarita text Zootaxa 2017 2017-11-22 4353 1 117 132 journal article 31357 10.11646/zootaxa.4353.1.7 23a22e38-f32b-44da-905b-6b352ff74843 1175-5326 1064562 FE581F19-7FAA-4F1F-B562-2718D4213237 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 µS 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 SãO MIgUEl, SAnTA MArIA And fOr ThE fIrST TImE IS rEcOrdEd fOr TErcEIrA ISlAnd (SEE FIg. 1 ).