http://thesaurus.bhlscielo.org/vocab/pthttp://thesaurus.bhlscielo.org/vocab/pt?tema=1716Chelicerata http://thesaurus.bhlscielo.org/vocab/pt?tema=1716 Arthropoda BT http://thesaurus.bhlscielo.org/vocab/pt?tema=1716 Pycnogonida NT http://thesaurus.bhlscielo.org/vocab/pt?tema=1716 Merostomata NT http://thesaurus.bhlscielo.org/vocab/pt?tema=1716 Arachnida NT