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Benzoquinones from scent glands of phalangiid harvestmen (Arachnida, Opiliones, Eupnoi): a lesson from Rilaena triangularis.
Raspotnig, G; Schaider, M; Föttinger, P; Leutgeb, V; Komposch, C;
Chemoecology. 2015; 25(2):63-72
Originalarbeiten (Zeitschrift)


Föttinger Petra


In case of disturbance, the phalangiine harvestman Rilaena triangularis (Eupnoi, Phalangiidae) emits a directed jet from large prosomal scent ("defensive") glands. The pungent-smelling secretion was analyzed by gas chromatography-mass spectrometry and found to contain mainly 1,4-benzoquinone along with 1,4-naphthoquinone and caprylic (=octanoic) acid. While various alkylated benzoquinones are characteristic for the scent gland secretions of many grassatorean Laniatores, this is the first incidence of benzoquinone-based chemical defense in palpatorean harvestmen.

Find related publications in this database (Keywords)

Scent glands
Chemical defense
Caprylic acid