Marisia - Maros Megyei Múzeum Évkönyve 31/2. (2011)
Zoology
Petru Vasile ISTRATE Habitat: on the stems and flowers of Daucus carota and Pastinaca sativa. Phytoecia caerulea (Scopoli, 1772) Tärnäveni, 06.201 l(near railway). Habitat: in dry meadows, on blossomed stems of Brassica elongata and Sisymbrium strictissimum. Phytoecia pustulata (Schrank, 1776) Tärnäveni, 05.2003 -Trei Brazi, graveyard, 10.06.2000, 2.05. 2003, Cerghid, 15.06.2009. Habitat: in dry meadows, on inflorescences of Achillea millefolium, Chrysanthemum sp. Phytoecia virgula (Carpentier, 1825) Biia, 29.05.2011, Cornesti, 06.2004 (hill “The Face of the City Area”). Habitat: in dry meadows, on inflorescences of Chrysanthemum sp. More rare than the previous species. Genus Oberen Dejean, 1835 Oberea erythrocephala (Schrank, 1776) Cräiesti, 4.06.2011, Biia, 29.05.2011, Herepea, 27.05.2009. Habitat: in dry meadows, on Euphorbiaceae, especially on Euphorbia cyparissias. There were collected samples belonging to 22 species, which represents three subfamilies. From the species collected, two are rare: Pilemia tigrina, a protected species mentioned in the second Anexa Habitate Directive of European Environment Agency, and Musaria árgus, a steppe species rarely observed in Romania. The rest of the species are common, encountered in the majority of the natural meadows, dependent on xerophilous habitats, in which the host plants vegetate. Commentary about the apparition periods of the adults The phytophagous longhorn beetles appear by installment throughout the grassy plants vegetation period. The first species, belong to the genera of the Dorcanini tribe, which appear at the end of March, sometimes, as it happened in 2011. All the species belonging to Dorcanini tribe appear all at once, less Dorcadion murrayi, which probably appears in May. In the same time with longhorn beetles from Dorcanini appears Cardoria scutellata and then by installment towards the end of April more species of Phytoecia [3], such as Phytoecia virgula and Phytoecia pustulata. Towards the end of April and the beginning of May, the majority of species appear, beginning with Pilemia tigrina and different species of Agapanthia sp. Basically the middle and the end of May represent the period with the most phytophagous longhorn beetles, the moment when the grassy plants from the steppe meadows reached maturity and form flowers. In June the decline is visible, with the gradual drying of the vegetation. A series of species appear such as Musaria sp. and Lepturinae or Cerambycinae, Pseudovadonia livida, Vadonia unipunctata and Plagionotus floralis. During July, as the temperature rises powerfully and the grassy vegetation dries, from steppe meadows all the known species, whose adults could be found on the inflorescences of some summer plants disappear. 60
