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This study gives out the identification of insect faunal waves colonizing decomposing carrions of rabbits and guinea pigs treated with certain drug agent (tramadol) in Cairo, Egypt. Each of six rabbits and six guinea pigs is divided into 2 groups, where the first was killed by tramadol and the second group was killed by asphyxia as a control experiment. Generally, decomposition process was observed to have a slower rate in winter. Reaching to the skeletal stage was delayed in tramadolintoxicated carcasses in comparing to the control carcasses. A total of 12966 arthropod individuals (Immature stages and adults) were collected. In concern of class Insecta, 67 species belonging to 6 Insecta orders and 2 Arachnida orders, 37 families and 51 genera were identified from this study during winter and summer seasons. Significantly lower numbers of immatures were observed and collected in the present study from the treated carcasses. The proportions of adult insects were also significantly different in control carcasses when compared with tramadol intoxicated ones in both winter and summer season for both rabbits and guinea pigs. This study provides background for the influence of tramadol on the colonizing wave of arthropod fauna which is of relevance to forensic science. We can conclude that drugs and toxins present in a decomposing body may alter the rate of insect invasion of that body.

The Mantodea of Egypt were studied by examining and identifying specimens from four main Egyptian collections and some of those preserved in international museums, collecting specimens from various parts of the country between July 2007 and April 2010, and previous Egyptian records. We found 60 species belonging to 21 genera and 4 families. Eremiaphilidae included 31 species in 2 genera with one new record from Egypt, Eremiaphila gigas; Empusidae, 7 species in 4 genera; Mantidae, 18 species in 13 genera with one new species, Elaea solimani; and Tarachodidae, 3 species in 2 genera. We provide identification keys for Egyptian taxa, data on the material examined, the world distribution, synonyms and a description of the new species.

The present work was carried out to make a pilot study of mantis population using mark release recapture technique in El-Fayoum governorate through the year of 2008 to estimate the population density and the biodiversity of some mantis fauna. This study form a nucleus of more extensive studies on mantis ecology which is still not clear and shed the light on the nature of mantis population and some problems facing this beautiful insect in Egypt.

This is the first chemical taxonomic study of cuticular hydrocarbons of seven common mantis species in Egypt. This study is shedding the light on the role of this chemicals in phylogeny and taxonomy of this charismatic group of Insects.

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