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Scanning Electron Microscopic Examination Of The Putative Olfactory Structures Possessed By The Phorid Fly, Megaselia Halterata (Diptera, Phoridae), R. M. Pfeil, R. A. Walsh, R. O. Mumma
Scanning Electron Microscopic Examination Of The Putative Olfactory Structures Possessed By The Phorid Fly, Megaselia Halterata (Diptera, Phoridae), R. M. Pfeil, R. A. Walsh, R. O. Mumma
Scanning Microscopy
The antennae, palps, and mouth parts sheath of Megaselia halterata (Wood) (Diptera, Phoridae) were examined by scanning electron microscopy to locate putative olfactory sensilla (POS). Most POS were found on the third antenna! segment (Johnston's organ). These POS included a lanceolate peg, a bulbous peg, and two types of pit sensilla. Female flies could be distinguished from males by the predominance of the lanceolate peg on the female Johnston's organ. One type of pit sensillum with a single exterior opening was located below the cuticular surface and housed several pegs. The other type of pit sensillum was domed with a …