Tipula (Savtshenkia) pilipenkoi sp. n., a new cranefly species of Tipulidae (Diptera) from the Russian Far East

A new cranefly species from Kunashir Island (Russian Far East), Tipula (Savtshenkia) pilipenkoi sp. n. (Diptera: Tipulidae), is described and illustrated based on the male imago. The new species is closest to the Japanese species T. (Savtshenkia) mohriana Alexander, 1954, and differs by the structure of hypopygium, especially by the structure of tergite 9 and inner gonostylus. Tipula (Savtshenkia) kiushiuensis Alexander, 1925 is recorded from the Kuril Islands for the first time.Diagnosis of Tipula (Savtshenkia) pilipenkoi sp. n. Medium-sized yellow-brown species. Scape and pedicel yellow, flagellomere dark brown. Prescutum with four dark brown longitudinal stripes, pleura without brown longitudinal stripe. Wings light brownish, with a very obscure brownish pattern and a brown stigma. Abdomen yellow with a brown apex. Sternite 9 without an unpaired projection in the proximal part. Tergite 9 divided along the middle into two separate lobes, connected by a translucent membrane. Sternite 8 moderately elongated posteriorly; its apex with a deep and wide notch, and its posterolateral projections with long strong setae. Outer gonostylus rod-shaped, with a small darkened tooth at the base. Inner gonostylus with a large semi-membranous dorsal crest strongly curved outwards; the outer basal lobe in the form of a plate sharply bent outward and forward.