Eriogaster catax and E. lanestris (Lepidoptera: Lasiocampidae) are two cohabiting species with extremely isolated populations. The anthropic impact lead to a decrease in their distributional areas, which led to the inclusion of E. catax in Annexes II and IV of the Council Directive 92/43/EEC. There are few studies regarding the species in question, revealing the scarcity of data regarding their biology and ecology. Our study was conducted in a Natura 2000 protected area, Turda Gorge (Romania) where the two species are present in an agroecosystem used as a pasture, which is covered in patches of by their main host plants, Prunus spinosa and Crataegus spp. The present study provides important data which can be used for the species conservation of E. catax, and it reveals a series of similarities between E. catax and E. lanestris with regards to habitat preferences and ecological needs in choosing the oviposition site.

The most diverse and rich (42 species) weevil fauna occur grasslands of Bădeşti. Mecinus plantaginis is recorded for the first time from Romania, and Mogulones larvatus, Argoptochus quadrisignatus, Lixus cylindrus and L. angustus, are rare in the country. The most common are: Protapion apricans, Mecinus pyraster, Tychius quinquepunctatus, Phyllobius pyri, Ph. betulinus and Anthonomus rubi, and the most numerous populations form: Sciaphobus caesius, Larinus obtusus, Eusomus ovulum, Foucartia ptochoides and species of genera: Sitona, Phyllobius and Polydrusus. These preliminary results suggests much higher diversity and richness of weevils in the Nature 2000 Site "Eastern Cluj Hills", what should be confirmed by further study.