Helochares lividus (Forster, 1771)

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 : 124-125

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 CAldEIrãO GrAndE"—SãO 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 µS cm–1).

World distribution. ThIS SpEcIES hAS A WESTErn PAlEArcTIc dISTrIbUTIOn. IT IS prESEnT In EUrOpE, ASIA And NOrTh AfrIcA (GArrIdO-GOnzÁlEz 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 SãO MIgUEl ISlAndS (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.