This book as been requested by a number of researchers since the original supplement was published in 2003. There is increasing demand for it. The book contains an identification key and colour plates of the species known from the Sinai Peninsula. Darkling beetles serve as a model group for a wide range of research, e.g. in faunistics, biogeography, phylogeography, and taxonomy. They are of the interest of the active and future researchers and amateurs. Many potential readers in the Middle East countries deal with biogeography and bionomics of Tenebrionidae as a model group. One researcher said "There is an absolute gap in the market concerning professional books dealing with the beetles of the family Tenebrionidae" As well as being a valuable taxonomic reference, the book can be used on the following course/modules: biogeography, desert life, ecology of insects, local faunas of insects.