Scanning electron microscope observations on the multilocular disc-pores and dermal projections of adult female Porphyrophora tritici and P. cynodonti

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Published: Jan 8, 2010
DOI: https://doi.org/10.12681/eh.11574
Keywords:
SEM study multilocular disc-pores Hemiptera Margarodidae adult female Porphyrophora spp
Η.Α. Vahedi
Plant protection Department, Agricultural Collage, Razi University, Kermanshah
F. Gholami Mahfar
Plant protection Department, Agricultural Collage, Razi University, Kermanshah
Abstract
The morphology of the multilocular disc-pores from the anterior part of the body (abdominal segments I-III and all thoracic segments, dorso-venterally) of two species of Porphyrophora (P. tritici and P. cynodontis: Hemiptera: Coccoidea: Margarodidae) were examined using a scanning electron microscope. The multilocular disc-pores of both species have 1 or 2 (rarely 3) rings of evenly or unevenly distributed loculi but the more central rings are almost always incomplete. Each outer ring of the more anterior disc-pores of P. tritici was complete, with 5- 13 loculi, and the inner ring had 0-4 unevenly distributed loculi. Each disc-pore of P. cynodontis had a complete outer ring of 6-9 evenly distributed loculi and an inner ring with only 0-1 loculi. A bright central zone is absent in most cases. These two species are similar in that both have a dense network of small, globular projections throughout the derm surface. These observations are discussed in relation to those of light microscope studies.
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