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Honeydew sugars in wild-caught female deer flies (Diptera: Tabanidae)



Honeydew sugars in wild-caught female deer flies (Diptera: Tabanidae)



Journal of Medical Entomology 35(5): 685-689



Female deer flies (Chrysops spp.) were collected from 2 habitats in Algonquin Provincial Park, ON. Using thin-layer chromatography, 11 sugars were detected in the digestive tracts of these flies; these occurred in 41 different combinations. We argue that combinations including melezitose, stachyose, or both can be used to indicate when flies recently have fed on homopteran honeydew. Accordingly, 85.7% of Chrysops excitans (n = 49) and 61.1% of Chrysops mitis (n = 18) collected from an abandoned airfield and 69.8% of C. excitans (n = 53) and 60.0% of C. mitis (n = 15) from a bog habitat tested positive for these honeydew indicator sugars. The difference between species was significant at the airfield only. Possible reasons for this habitat-dependent difference are discussed.

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Accession: 003161614

Download citation: RISBibTeXText

PMID: 9775593

DOI: 10.1093/jmedent/35.5.685



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