The survey and checklist of invasive species of the insects in some different localities of Iraq are revised; 24 invasive species were documented until December 2018 during the current investigations. The species distributions, common names and synonyms are given. The current investigation included all of exotic species in Iraq, which are not collected during this study.

The fauna of bees (Hymenoptera, Apoidea) from different regions of Iraq is surveyed in this study; there were 16 species, 13 genera that belong to four families which are collected in this investigation. Also, all the species that are recorded for Iraq in previous investigations are revised; totally there are 110 species, 32 genera belonging to five families: Apidae, Andernidae, Colletidae, Halictidae and Megachilidae were listed.

In this survey, there are 14 species belonging to 14 genera, nine families and two orders, collected on Macrofungi from Tikrit city, Salahadin Governorate, North Central of Iraq. The members of Coleoptera were more abundant than flies on Macrofungi. The family of Ciidae and Leiodidae (Order, Coleoptera), Mycetophilidae (Order, Diptera), and 6 species are recorded for the first time for insect fauna of Iraq.

A revision study of the Sphecidae from Iraq is presented. A survey is conducted to collect the specimens from different regions; generally, there were 41 species belonging to 12 genera and 4 subfamilies are revised with synonyms.The current investigation included the species previously reported in Iraq, which were not collected during the current investigations; the distribution and other information are also provided.

Due to the importance of insects present in storages, which cause a lot of damage to stored materials (cereals, seeds, dates and other materials), the current study was proposed to determine the species spread in Iraq. It showed 31 species belonging to 16 genera under eight families and two orders. The specimens were collected from several storage spaces at several regions of Iraq. The species of Tribolium castaneum (Herbst, 1797) was most abundant population compared with other insects. The study also included a revision of the species that recorded previously in Iraq.