Raise of Leuctra signifera jahorinensis Kaćanski, 1972 to species level

Since this very rare taxon, reported only from two sampling stations in the Jahorina Mountains in Bosnia-Herzegovina, clearly differs from all other known species of the L. signifera group (Kaćanski, 1972; Figs. E1–E 6), it should be raised to species level. Leuctra signifera jahorinensis is presently the only brachypterous taxon (Fig. E1) known from the L. signifera species group. Because Kaćanski (1972) followed Mosely (1932) for her definition of L. signifera (adult males with narrow posteromedial process; Fig. A5), there is no reason to consider her L. s. jahorinensis as a subspecies of L. signifera in this sense, since the posteromedial process of L. s. jahorinensis (Figs. E2–E3) is much wider and has a very deep medial incision. By these features, adult males of L. s. jahorinensis are even closer to those of L. signifera sensu Kempny (Figs. C1, C5).