الفهرس 
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Abstract
Ecological and taxonomic studies of Family Ceratopogonidae (Order: Diptera) in El Bustan area (Beheira governorate) and Marsafa area (Qalyubiya governorate), are the objectives of this study.
1-Ecological study :
Fifteen species belonging to 5 genera were collected from both studied areas, 14 species from El Bustan, and 7 species from Marsafa using the aspirator on windows lit from inside.
*Seasonal abundance and distribution :
Eight species were collected from El Bustan area only, namely : Culicoides circumscriptus, Forcipomyia fuliginosa, F. sp., C. newsteadi, C. navaie, Dasyhelea nyasae, C. Sp. and C. distinctipennis.
Culicoides circumscriptus was the most abundant species all the year round; however, its abundance was fluctuating, reaching its maximum value in July and August. Although this species is a plastic one with adaptability to live in a wide range of habitats, it was collected from El
Bustan area only.
Forcipomyia sp. and F. fuliginosa were collected throughout the whole year except February; their maximum abundance was in August.
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LASUMMARY
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Culicoides navaie, Dasyhelea nyasae, Culicoides sp. C. distinctipennis were collected in very few numbers throughout the whole period of study.
Culicoides shultzei was the most abundant species at Marsafa area, it was collected all the year round except in January, its maximum abundance was in August.
Forcipomyia lepidota was collected from Marsafa area only all the year round except December and January; its maximum abundance was in August.
*Species composition and total annual abundance
- The total number of individuals collected from El Bustan area (53.1%) was higher than the number collected from Marsafa area (46.9%) along the whole period of study.
The number of midges collected throughout the 2nd year of study (May 1994 to April 1995) from both studied areas (58.67%) was greater than that collected throughout the 1st year (May 1993 to April 1994).
- In all cases, the number of females attracted light and collected by the
- aspirator overntunbered that of males (6.13 females : 1 male).
The light trap, with the exception of very large peaks does not monitor detailed seasonal abundance accurately; so that, more intensive studies are necessary to determine the satisfactory abundance and distribution of different midge species within different ecological zones of Egypt which will help in providing a better understanding of these medically important insects.
iv SUMMARral
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2- Taxonomic study:
This study included:
-Keys to families of superfamily Culicoidea; subfamilies of family Ceratopogonidae; in addition to keys for genera, and species of the family.
-Diagnostic characters of the genera and species, synonyms, in addition to the geographical and local distribution were given to each species.
-Labeled drawings to the most important characters used in keys and diagnosis.
-Family Ceratopogonidae in Egypt is divided into four subfamilies : Leptoconopinae represented by one genus and two species; Dasyheleinae represented by one genus and eight species; Forcipomyiinae represented by two genera and eighteen species; Ceratopogoninae represented by six genera and thirty one species.
-Culicoides sp., Forcipomyia lepidota I. & M., and Forcipomyia sp. were collected from Egypt for the first time.
-So, the family Ceratopogonidae is collectively represented in Egypt by 59 species and subspecies belonging to 10 genera.