Enochrus fuscipennis (Thomson, 1884)

Lamelas-López, 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, Zootaxa 4353 (1), pp. 117-132 : 124

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 (PérEz-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 µS 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 µS cm–1) And A mEdIUm cOVEr Of EmErgEnT VEgETATIOn (ArOUnd 62%) (PérEz-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 µS 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 µS 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 µS 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 ).

Figures

FIGURE1. NEW RECORDS fOR THEAZORES ISLANDS (LATITUDE 36º 55’–39° 43’ N; LONGITUDE 24° 45’–31°17’ W). COR CORVO ISLAND, TER TERCEIRA ISLAND,PIC PICO ISLAND AND SMG SãO MIGUEL ISLAND.