Buxus sempervirens Linné is one of the most cultivated ornamental species, but in recent years it has faced a dangerous pest, Cydalima perspectalis (Walker) (Lepidoptera: Crambidae) native to the Asian Continent (China, Japan, Korea). In 2019 we conducted some investigations on the life cycle of this pest. The research was carried out both in the laboratory and in the field, in the ‘Al. Buia’ Botanical Garden from Craiova. Under laboratory conditions, this species has developed four complete generations, and the fifth generation, partial. The temperature in the laboratory was between 23.5°C-26°C, and the photoperiod during the study was between 12-15 hours of light and 12-9 hours of darkness. In the field this pest has developed three complete generations and the fourth was partial. The number of days for the generations developed in the laboratory is 272 days, and for the field population 286 days.

Orthoptera comprise an order of common insects, most of which are phytophagous, but there are also predatory orthoptera. They are found all over the world and adapt to the environmental conditions in which they are found. Orthoptera insects are pests of vegetable plants, destroying large areas, so vegetable growers are familiar with them. The research was carried out in the Amărăștii de Jos stationary in 2020 in vegetable crops. The aim of the research was to identify orthoptera species in vegetable crops and two methods were used to collect them: the beer trap method and the Barber soil trap method). Orthopteran insects were identified with the help of specialized determiners, then classified by family down to species level. Orthoptera currently identified in the stationary studied included six species, namely: Gryllotalpa gryllotalpa, Gryllus campestris, Gryllus desertus, Acrida hungarica, Dociostaurus maroccanus and Calliptamus italicus. The species with the most specimens is Gryllotalpa gryllotalpa (42 specimens) and the species with the fewest specimens is Dociostaurus maroccanus (3 specimens).

Within this station, three experimental variants were initiated that targeted the preceding culture. Therefore, the variants studied were: V1 maize in monoculture; V2 corn after sunflower; V3 corn after wheat. Barber-type soil traps were used to collect biological material, they worked continuously from April to July 2021, where a number of 5 collections were made for each variant. Barber traps consist of plastic containers of approx. 10-12 centimeters high and about 8-10 centimeters in diameter in which I used a salt solution (NaCl) with a concentration of about 20% as fixing liquid. Six traps were used for each experimental variant. Samples were collected at 12-15 day intervals when we changed the fixative – saline solution, replenished or, if necessary, replaced. The collected species were cleaned of all plant remains, other impurities, and then the coleoptera species were selected separately, and with the help of determinants they were identified. The structure, dynamics and abundance of coleopteran species were then determined according to each experimental variant, and the most frequently collected were: Tanymecus dilaticollis, Epicometis hirta, Coccinela 7- punctata, Harpalus calceatus, Harpalus distinguendus Formіcomus pedestrіs, Phyllotreta vittula, Opatrum sabulosum and Pentodonidiota.

This paper presents data on the abundance and diversity of useful coleopteran species collected in the plum plantation in Poboru, Olt county. The research was carried out in 2022, starting from April to September.During the observation period, research was carried out on the entomofauna of useful coleoptera found in the Poboru orchard ecosystem. This was subjected to an analysis regarding the structure and abundance of useful coleopterans encountered in the studied fruit crop, and they were selected from the total of coleopterans identified and treated separately.Thus, in 2022, 8 species from the Carabidae family, 2 species from the Staphilinidae family and 10 species from the Coccinellidae family were identified.According to the data obtained in 2022, the Coccinellidae family represented 61.12%, the Carabidae family accounted for 28.75% and the Staphilinidae family 10.13%.

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