Life Cycle of Cydalima perspectalis (Walker) (Lepidoptera: Crambidae) in Craiova Area

Abstract

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.

Ecophysiological responses of individually and group reared Cydalima perspectalis (Lepidoptera: Crambidae) to alkaloid-containing host plants

“…Since the boxwood trees– as slow growing evergreen plants– have been threatened by C. perspectalis in the Hyrcanian forests, the current findings of life table parameters along with insect and plant physiological characteristics might clarify the ambiguities about the relationship of this exotic pest and boxwood species. In the present study, the total developmental times were not significantly different on two plant species and similar to those on B. sempervirens, reported by Lopez and Eizaguirre (2019) and Stan and Mitrea (2020). However, in Poland the shorter preadult stage (28 days) of C. perspectalis has been observed on B. sempervirens (Kucharska-Swierszcz et al 2022).…”

“…According to Lopez and Eizaguirre (2019), the larvae pupated at the 6th instar on semiartificial diet or the 7th and 8th instars on B. sempervirens fresh leaves. The total developmental times of C. perspectalis on B. sempervirens were evaluated to be 42–45 days at 23.5–26°C (Stan and Mitrea 2020). Moreover, the fecundity was 482.5 eggs for overwintered generation of C. perspectalis (Cheng 2005).…”

Demographic study of the box tree moth Cydalima perspectalis (Lepidoptera: Crambidae) feeding on Buxus hyrcana (Buxales: Buxaceae)

“…So far, most studies focused on the species population dynamics, namely the detection and search for natural enemies, as well as on management methods (Farahani et al, 2018; Kazerani et al, 2019; Ledru et al, 2022; Suppo et al, 2020; Zamani et al, 2017). Several life cycle studies of C. perspectalis were conducted in the laboratory, under controlled conditions (López & Eizaguirre, 2019; Maruyama & Shinkaji, 1991; Maruyama & Shinkaji, 1993; Nacambo et al, 2014; Stan & Mitrea, 2020). In Iran, only Farahani et al (2021) attempted to investigate the life cycle of this pest under field and laboratory conditions, yet without success.…”