Cuticular structures on the antennae of Hypoderma bovis De Geer (Diptera: Oestridae) females
Cuticular structures on the antennae of Hypoderma bovis De Geer (Diptera: Oestridae) females
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DOI:
10.1016/0020-7322(95)00013-5
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发表时间:
1996-01-01
期刊:
影响因子:
--
通讯作者:
Adserballe, CF
中科院分区:
文献类型:
--
作者:
Hunter, FF;Adserballe, CF
The antennae of Hypoderma bovis (Diptera:Oestridae) females were examined using scanning electron microscopy. Each antenna is composed of 3 parts: the scape, the pedicel, and the funiculus, with a large, protruding arista. Mechanoreceptors are found on the proximal and lateral margins of the scape and pedicel, respectively. Microtrichia, which are presumably non-innervated, are located evenly over both the outer surface of the scape and the inner surface of the pedicel. A narrow band of microtrichia is present proximally on the outer surface of the pedicel. The entire funicular surface is densely covered with microtrichia. Small patches lacking these microtrichia appear as depressions or ''pits'' (8-20 mu m in diameter) on the surface of the funiculus. Olfactory sensilla found on the funicular surface include basiconica type 1, basiconica type 2, and trichoid sensilla. The sensilla basiconica commonly occur in pits on the anterodorsal surface of the funiculus. Trichoid sensilla are abundant on the posteroventral surface of the funiculus and do not appear to occur in pits. In addition, clavate and peg sensilla, whose functions are unknown, are found in low numbers on the funicular surface. There may be as many as 300 olfactory pits on the anterodorsal surface of each funiculus. These are single-chambered and contain 6 or fewer sensilla basiconica. We propose that a relatively high number of pits may be characteristic of flies in Superfamily Oestroidea (as compared with those of Superfamily Muscoidea), but that pit morphology within the Calyptratae is not Superfamily-specific. Copyright (C) 1996 Elsevier Science Ltd.