In this study, distribution of Steninae (Coleoptera: Staphylinidae) subfamily in Turkey was comprehensively evaluated and compared with the fauna of Turkey's neighboring countries and the Palaearctic Region. The current literature indicates that there are 130 Steninae species in Turkey, and approximately 17.5% (23 species) of these species are endemic to Turkey. This study presents the results of an analysis of the similarity between Turkey and its neighboring countries and the Palaearctic region. The Black Sea region has the most species (87 species) and the highest number of endemic species (15 species) in Turkey. An analysis of the similarity between Turkey's regions revealed that the Central Anatolia Region and the Eastern Anatolia Region are the most similar to each other, with a similarity rate of 75%. In terms of similarity with other countries, the Steninae fauna of Turkey is most similar to that of Greece and Bulgaria, with a similarity rate of 43%. Compared to other sub-regions of the Palaearctic, the Steninae fauna of Turkey is more similar to the Middle Eastern fauna, with a similarity rate of 29%.

This study aims to perform an ecological and zoogeographical analysis of the Meloidae in Ankara province, Türkiye. The ecological evaluations detected higher species diversities in June, 701-900m in elevation range, and 20.1–25.0°C in air temperature. There was no difference in the detecting elevations according to the phylogenetic positions of the species, a significant difference was observed between the collecting air temperatures. Host plants of 33 species were identified. The zoogeographic analysis revealed that the highest rate (18.6% of the detected species) was in the Turano-European regions.

In this study, the list of Turkish Nemestrinid species was updated with new records. Specimens in Metin Aktaş Zoological Museum of Gazi University from different regions of Turkey were evaluated. Nemestrinus bombiformis (Portschinsky, 1892) and Stenopteromyia bolivari (Strobl, 1905) are recorded from Turkey for the first time. With these new records, thirteen species of Nemestrinidae are known from Turkey. Distribution maps of the species are given. A checklist and distribution maps of the Nemestrinidae species of Turkey are presented.

Insect mouthparts can be a useful addition to evolutionary research, especially when their structure and function are well understood. In the present study, the proboscis morphology and sensilla distribution in Tretopteryx pertusalis were investigated in order to further the understanding of the relationship between moth mouthparts and food selection. Sensillas showing different distributions on the tube surface were examined using scanning electron microscopy. The galeal surface of T. pertusalis, which has a relatively short proboscis, is in the form of a cuticular ridge bearing numerous microtrichia. There are 3 types of sensilla found on the proboscis. Sensilla chaetica is the most common type along the length of the proboscis of varying lengths. Sensilla basiconica is found on the surface of the galea and in the food canal. Sensilla styloconica is located only in the tip region.

A survey of the Alabama Megachilidae resulted in an increase of the number of documented species from seventeen to sixty-eight. County-level distribution and floral associations are listed for all species. This study provides a baseline for documentation of diversity changes.

The Aedeagus and spermatheca of the type species Pilemostoma fastuosum (Schaller) of the monotypic genus Pilemostoma Desbrochers des Loges have been studied and figured. Aedeagal and spermathecal structures were evaluated in detail under both stereo microscope and Scanning Electron Microscope (SEM) for the first time on the basis of 20 and 24 specified characters respectively. Contrary of popular acceptance, we demonstrate that the characteristics of the aedeagal and spermathecal structures, which can be obtained with SEM studies, can be used at almost all taxonomic levels diagnostically. It is obvious that the characteristics, however, will have different values for different taxonomic categories. As a result of this study, the aedeagi, especially a total of seven diverse characters (including characteristics of apex in dorsal view, general shape in lateral view, etc..), and the spermathecae, vasculum, ampulla, ductus glandula auxiliaris and ductus spermatheca are found generally constant within species, but distinct and useful in comparison with other species in the tribe Cassidini. Eventually, the aedeagal and spermathecal structures of the type species examined in this study was found to be distinctive not only at the species level but also at the generic level. Accordingly, as an important output of the study, we suggest that Pilemostoma should be downgraded to a subgenus level under the genus Cassida Linnaeus, 1758 as Cassida (Pilemostoma) Desbrocher des Loges, 1891 rest. stat..