Arima marginata is a species of leaf beetles of the subfamily Galerucinae in the family Chrysomelidae.
Subspecies Subspecies include:Biolib Arima marginata caprai Havelka, 1959 Arima marginata freyi Havelka, 1959 Arima marginata heyrovskyi Havelka, 1959 Arima marginata marginata (Fabricius, 1781) Arima marginata obenbergeri Havelka, 1959 Arima marginata pseudobrachyptera Havelka, 1959
Distribution This species is only found in the Southeast France and in the Northwestern Italy.Fauna Europaea
Description Arima marginata can reach a body length of about in females, of about in males.Orto.one Therefore this species presents a clear sexual dimorphism, as females are generally much larger than males. Moreover females outnumber males.
These beetles are shiny black with orange marginal bands on the edge of the pronotum and the elytra. Elytra cover only two abdominal segments.
Antennae are filiform and the abdomen is voluminous. The last sternites is composed by one piece, in the shape of a ginkgo leaf, while the genital plate is made of two parts.Le Monde des insectes These beetles do not fly, but they are very active.
Biology Adults of this species can be found from April to August,iNaturalist and have one generation per year (univoltine). Adults overwinter in the ground. Female lays about 80 eggs on the leaves of the host plants, and the larvae come out after about ten days. Larvae of A. marginata can reach a body length of about . They are black and highly polyphagous. They mainly feed on the leaves of many aromatic Lamiaceae species (Lavandula, Mentha, Origanum, Salvia, Basil, Thymus, etc.).V. Laboissière Description de la larve d'Arima marginata Fabr. Bulletin de la Société entomologique de France Année 1935 40(11) pp. 176-178
References
External links
Lech Borowiec Chrysomelidae of Europe Entomoland Les Chrysomeles