BioOne Complete (complete.BioOne.org) is a full-text database of 200 subscribed and open-access titles in the biological, ecological, and environmental sciences published by nonprofit societies, associations, museums, institutions, and presses.

Nymphs ofTriatoma infestans andTriatoma mazzottii are weakly attracted to their feces and to extracts of feces in polar solvents, but not to nonpolar solvent extracts. The major volatile compounds identified in feces by solvent extraction and thermal desorption wereo-aminoacetophenone, 4-methylquinazoline, and 2,4-dimethylquinazoline, but these showed no attractant activity at a range of concentrations. Choice tests with a moving current of air gave no positive reaction to feces, extracts, or pure compounds.

-The first recorded analyses of meliponine bee Dufour gland secretions by gas chromatographicmass spectrometry on three species of Frieseomelitta showed these glands contain a mixture of oxygenated compounds and terpenoids with some hydrocarbons. In F. varia the major substances are eicosenal, 1-eicosenol and 2-pentadecanone. In F. sylvestrii they are pentacosene, nonadecanal and heptacosene. F. silvestrii languida, with the largest glands and the most complex mixture, has geranylfarnesol, followed by 1-tetradecanol and tetradecanal, making it quite different from F. silvestrii. Frieseomelitta sylvestrii / Frieseomelitta varia / Frieseomelitta sylvestrii languida / geranylfarnesol

Volatile exocrine products of the metathoracic Brindley's glands in Triatoma infestans (Hemiptera: Reduviidae) were obtained by dissection and by sampling the air passed over agitated live adults. Isobutyric acid was the main component in the glands, together with isobutyl, isoamyl and amyl alcohols, 2-phenylethanol and other carboxylic acids and esters. Isobutyric acid, isobutyl, isoamyl and amyl alcohols and ester were also found to be emitted into the air, apparently for defence. No volatile products were detected in the metasternal glands.