Two new species of scale insects (Hemiptera, Coccoidea) from Sardinia (Italy) with a check list of Sardinian Coccoidea

Two new species of scale insects collected in Sardinia (Italy) are described and illustrated: Spinococcus giuliae sp. n. (Pseudococcidae) off the roots of Umbilicus rupestris (Crassulaceae) and Micrococcus sardous sp. n. (Micrococcidae) off the root of an undetermined grass (Poaceae) growing near the sea. An identification key to Micrococcus species and a revised list of the scales presently known in the island are also provided