The faunistic study of the staphylinid group (Coleoptera, Staphylinidae) involves multiannual researches based on field collections, exploring of a new different types of habitats and microhabitats. Tracing of the influence of certain forest and agricultural plants in atracting of staphylinids species for population and adaptation, checking of preferable substrates for growth and consumption of nutritional content. Philonthus salinus Kiesenwetter, 1844, figure 1, is a coprobiont, predatory staphylinid from subfamily Staphylininae Latreille, 1802. About the study of this species on the Republic of Moldova territory are represented in publication the materials by autochthonous entomologists: Ostaficiuc V, Neculiseanu Z., Bacal S., etc. More concerned about the staphylinidofaunistical domain was Ostaficiuc V., group being one of 2 (click-beetles – Elateridae and rove beetles – Staphylinidea) included in the research during the practiced professional period. In this context, Ostaficiuc V. approached several aspects dedicated to the group of Staphylinids. Previous records: 1. One of the relevant results obtained over time were the phenological sheets developed and published for species from 6 genera including genus Philonthus Stephens, 1829 and the respective species. Thus, he presented an entire biological cycle for each developmental stage of the staphylinid Philonthus salinus Kiesenwetter, 1844. He has recorded data relating to: hibernation stage and place; the emergence of the adult after hibernation; flying of population in mass; the beginning of sexual maturation of hibernating females; mass development of sexually mature females; the beginning of mating of individuals and their mass coupling; the beginning of the lay and mass deposition; the decline of adults; embryonic development and incubation period; începutul eclozării larvelor și dezvoltării în masă; establishing the number of larval ages and duration for each; the beginning of process of pupation and their transformation into mass; the emergence of new generation adults and their mass flight. 2.In 1980, a direction of investigation for this staphylinid was the detailed investigation of bioecological peculiarities in laboratory conditions by organizing of an artificial insectarium with controlled environmental conditions and prepared nutritional menu. 3. Records about the distribution mode of staphylinids were made in the conditions of our country, classifying them into groups with uniform and non-uniform expansion potential. 4. He emphasized the specific species in a certain habitat, on a certain crop and/or substrate. 5. He classified the dominant species according to certain statistical indices with a certain value for certain researched areas. 6. Serial collections were recorded in the faunal register: Ghidighici, Străşeni district, 12.07.1968, 1♂; Chişinău city, 20.05.1971, 1♂; Palanca, Ștefan-Vodă district, 16.07.1974, 3 ♀♀; Giurgiuleşti, Cahul district, 09.07.1987, 7♀♀, at artificial light. He researched 550 points on the territory of the country in the years: 93 sites in 1968, 58 - in 1969, 8 - 1970, 119 - 1971, 38 - 1972, 32 - 1973 100 - 1974, 82 - 1975, one by 10 points in each year: 1976 and 1977, from which he extracted staphylinic material in general and specimens of the species Philonthus salinus Kiesenwetter, 1844. Figure 1. Philonthus salinus Kiesenwetter, 1844, the staphylinid from subfam.Staphylininae Latreille, 1802 (data base: Mihailov Irina)Recent records: 1.In 2010, the author was contributed to the completion of the database with new gathering for this species and tracking the expansion on new biotopes. From the research carried out in the Landscape Reserve "Saharna", have been identified with a high abundance more than 10 staphylinid species. In this year, 27 specimens of Philonthus salinus Kiesenwetter, 1844 were extracted from the collected samples. 2. In 2011, the author was completed the chapter with records gathered from the white and ultraviolet light collections and evaluate the seasonal dynamics in the northern area: the surroundings of Brinzeni (the didactic-experimental station). The flight period for Philonthus salinus Kiesenwetter, 1844 was set in July, with a frequency of 1-2 copies per day. It showed better receptivity to white light. 3. In 2012, she studies the belonging of the species in agrobiocenoses: maintained and unmaintained apple orchards. The research points were: Brînzeni, Zabriceni from Edineț district; Codru, experimental plantation, Chisinau; Demonstration orchard Stăuceni, Petricani, Durlești; Unmaintained orchard Budești, Grătiesti, Ghidighici, etc. 4. Gradually the author reconfirms the presence of the species in different types of substrates: in 2013 on grassland, in animal droppings and vegetable remains (Molovata Veche, Molovata Nouă, Dubăsari district). 5. In (2021-2022) was elucidated faunal diversity in the forest ecosystem : Saharna, Rezina district; Reserve Codrii, Străseni; Reserve Padurea Domnească, Glodeni district; Reserve Plaiul Fagului, Ungheni district, Reserve Prutul de Jos, Cahul district.

The faunistic study of the staphylinid group (Coleoptera, Staphylinidae) involves multiannual researches based on field collections, exploring of a new different types of habitats and microhabitats. Tracing of the influence of certain forest and agricultural plants in atracting of staphylinids species for population and adaptation, checking of preferable substrates for growth and consumption of nutritional content. Philonthus salinus Kiesenwetter, 1844, figure 1, is a coprobiont, predatory staphylinid from subfamily Staphylininae Latreille, 1802. About the study of this species on the Republic of Moldova territory are represented in publication the materials by autochthonous entomologists: Ostaficiuc V, Neculiseanu Z., Bacal S., etc. More concerned about the staphylinidofaunistical domain was Ostaficiuc V., group being one of 2 (click-beetles – Elateridae and rove beetles – Staphylinidea) included in the research during the practiced professional period. In this context, Ostaficiuc V. approached several aspects dedicated to the group of Staphylinids. Previous records: 1. One of the relevant results obtained over time were the phenological sheets developed and published for species from 6 genera including genus Philonthus Stephens, 1829 and the respective species. Thus, he presented an entire biological cycle for each developmental stage of the staphylinid Philonthus salinus Kiesenwetter, 1844. He has recorded data relating to: hibernation stage and place; the emergence of the adult after hibernation; flying of population in mass; the beginning of sexual maturation of hibernating females; mass development of sexually mature females; the beginning of mating of individuals and their mass coupling; the beginning of the lay and mass deposition; the decline of adults; embryonic development and incubation period; începutul eclozării larvelor și dezvoltării în masă; establishing the number of larval ages and duration for each; the beginning of process of pupation and their transformation into mass; the emergence of new generation adults and their mass flight. 2.In 1980, a direction of investigation for this staphylinid was the detailed investigation of bioecological peculiarities in laboratory conditions by organizing of an artificial insectarium with controlled environmental conditions and prepared nutritional menu. 3. Records about the distribution mode of staphylinids were made in the conditions of our country, classifying them into groups with uniform and non-uniform expansion potential. 4. He emphasized the specific species in a certain habitat, on a certain crop and/or substrate. 5. He classified the dominant species according to certain statistical indices with a certain value for certain researched areas. 6. Serial collections were recorded in the faunal register: Ghidighici, Străşeni district, 12.07.1968, 1♂; Chişinău city, 20.05.1971, 1♂; Palanca, Ștefan-Vodă district, 16.07.1974, 3 ♀♀; Giurgiuleşti, Cahul district, 09.07.1987, 7♀♀, at artificial light. He researched 550 points on the territory of the country in the years: 93 sites in 1968, 58 - in 1969, 8 - 1970, 119 - 1971, 38 - 1972, 32 - 1973 100 - 1974, 82 - 1975, one by 10 points in each year: 1976 and 1977, from which he extracted staphylinic material in general and specimens of the species Philonthus salinus Kiesenwetter, 1844. Figure 1. Philonthus salinus Kiesenwetter, 1844, the staphylinid from subfam.Staphylininae Latreille, 1802 (data base: Mihailov Irina)Recent records: 1.In 2010, the author was contributed to the completion of the database with new gathering for this species and tracking the expansion on new biotopes. From the research carried out in the Landscape Reserve "Saharna", have been identified with a high abundance more than 10 staphylinid species. In this year, 27 specimens of Philonthus salinus Kiesenwetter, 1844 were extracted from the collected samples. 2. In 2011, the author was completed the chapter with records gathered from the white and ultraviolet light collections and evaluate the seasonal dynamics in the northern area: the surroundings of Brinzeni (the didactic-experimental station). The flight period for Philonthus salinus Kiesenwetter, 1844 was set in July, with a frequency of 1-2 copies per day. It showed better receptivity to white light. 3. In 2012, she studies the belonging of the species in agrobiocenoses: maintained and unmaintained apple orchards. The research points were: Brînzeni, Zabriceni from Edineț district; Codru, experimental plantation, Chisinau; Demonstration orchard Stăuceni, Petricani, Durlești; Unmaintained orchard Budești, Grătiesti, Ghidighici, etc. 4. Gradually the author reconfirms the presence of the species in different types of substrates: in 2013 on grassland, in animal droppings and vegetable remains (Molovata Veche, Molovata Nouă, Dubăsari district). 5. In (2021-2022) was elucidated faunal diversity in the forest ecosystem : Saharna, Rezina district; Reserve Codrii, Străseni; Reserve Padurea Domnească, Glodeni district; Reserve Plaiul Fagului, Ungheni district, Reserve Prutul de Jos, Cahul district.