Synorthocladius federicoi sp. nov., a new species occurring in the middle basin of the Adige River, northern Italy (Diptera, Chironomidae, Orthocladiinae)

Male imago of Synorthocladius spp. Head (dorsal, left side) with vertex, coronal area and temporals of A S. federicoi sp. nov. B S. semivirens. Antenna, apex of last flagellomere of C, D S. federicoi sp. nov. E S. semivirens. Palpomere 3 of F S. federicoi sp. nov. G S. semivirens. Clypeus of H S. federicoi sp. nov. I S. semivirens. Lobes of antepronotum and acrostichals of J S. federicoi sp. nov. K S. semivirens. Humeral area of L S. federicoi sp. nov. M S. semivirens. The arrows indicate some distinguishing characters.